We are seeing linker errors caused by sections being discarded, despite
the linker script trying to keep them. The result is (eg):
`.exit.text' referenced in section `.alt.smp.init' of drivers/built-in.o: defined in discarded section `.exit.text' of drivers/built-in.o
`.exit.text' referenced in section `.alt.smp.init' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o
This is the relevent part of the linker script (reformatted to make it
clearer):
| SECTIONS
| {
| /*
| * unwind exit sections must be discarded before the rest of the
| * unwind sections get included.
| */
| /DISCARD/ : {
| *(.ARM.exidx.exit.text)
| *(.ARM.extab.exit.text)
| }
| ...
| .exit.text : {
| *(.exit.text)
| *(.memexit.text)
| }
| ...
| /DISCARD/ : {
| *(.exit.text)
| *(.memexit.text)
| *(.exit.data)
| *(.memexit.data)
| *(.memexit.rodata)
| *(.exitcall.exit)
| *(.discard)
| *(.discard.*)
| }
| }
Now, this is what the linker manual says about discarded output sections:
| The special output section name `/DISCARD/' may be used to discard
| input sections. Any input sections which are assigned to an output
| section named `/DISCARD/' are not included in the output file.
No questions, no exceptions. It doesn't say "unless they are listed
before the /DISCARD/ section." Now, this is what asn-generic/vmlinux.lds.S
says:
| /*
| * Default discarded sections.
| *
| * Some archs want to discard exit text/data at runtime rather than
| * link time due to cross-section references such as alt instructions,
| * bug table, eh_frame, etc. DISCARDS must be the last of output
| * section definitions so that such archs put those in earlier section
| * definitions.
| */
And guess what - the list _always_ includes .exit.text etc.
Now, what's actually happening is that the linker is reading the script,
and it finds the first /DISCARD/ output section at the beginning of the
script. It continues reading the script, and finds the 'DISCARD' macro
at the end, which having been postprocessed results in another
/DISCARD/ output section. As the linker already contains the earlier
/DISCARD/ output section, it adds it to that existing section, so it
effectively is placed at the start. This can be seen by using the -M
option to ld:
| Linker script and memory map
|
| 0xc037c080 jiffies = jiffies_64
|
| /DISCARD/
| *(.ARM.exidx.exit.text)
| *(.ARM.extab.exit.text)
| *(.exit.text)
| *(.memexit.text)
| *(.exit.data)
| *(.memexit.data)
| *(.memexit.rodata)
| *(.exitcall.exit)
| *(.discard)
| *(.discard.*)
|
| 0xc0008000 . = 0xc0008000
|
| .head.text 0xc0008000 0x1d0
| 0xc0008000 _text = .
| *(.head.text)
| .head.text 0xc0008000 0x1d0 arch/arm/kernel/head.o
| 0xc0008000 stext
|
| .text 0xc0008200 0x2d78d0
| 0xc0008200 _stext = .
| 0xc0008200 __exception_text_start = .
| *(.exception.text)
| .exception.text
| ...
As you can see, all the discarded sections are grouped together - and
as a result of it being the first output section, they all appear before
any other section.
The result is that not only is the unwind information discarded (as
intended), but also the .exit.text, despite us wanting to have the
.exit.text preserved.
We can't move the unwind information elsewhere, because it'll then be
included even when we do actually discard the .exit.text (and similar)
sections.
So, work around this by avoiding the generic DISCARDS macro, and instead
conditionalize the sections to be discarded ourselves. This avoids the
ambiguity in how the linker assigns input sections to output sections,
making our script less dependent on undocumented linker behaviour.
Reported-by: Rob Herring <robherring2@gmail.com>
Tested-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'fixes' of git://git.linaro.org/people/arnd/arm-soc:
mach-integrator: fix VGA base regression
arm/dt: Tegra: Update SDHCI nodes to match bindings
ARM: EXYNOS4: fix incorrect pad configuration for keypad row lines
ARM: SAMSUNG: fix to prevent declaring duplicated
ARM: SAMSUNG: fix watchdog reset issue with clk_get()
ARM: S3C64XX: Remove un-used code backlight code on SMDK6410
ARM: EXYNOS4: restart clocksource while system resumes
ARM: EXYNOS4: Fix routing timer interrupt to offline CPU
ARM: EXYNOS4: Fix return type of local_timer_setup()
ARM: EXYNOS4: Fix wrong pll type for vpll
ARM: Dove: fix second SPI initialization call
The changes introduced in commit
cc22b4c185
"ARM: set vga memory base at run-time"
Makes the Integrator/AP freeze completely. I appears that
this is due to the VGA base address being assigned at PCI
init time, while this base is needed earlier than that.
Moving the initialization of the base address to the
.map_io function solves this problem.
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The bindings were recently updated to have separate properties for each
type of GPIO. Update the Device Tree source to match that.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
598841ca99 ([S390] use gmap address
spaces for kvm guest images) changed kvm on s390 to use a separate
address space for kvm guests. We can now put KVM guests anywhere
in the user address mode with a size up to 8PB - as long as the
memory is 1MB-aligned. This change was done without KVM extension
capability bit.
The change was added after 3.0, but we still have a chance to add
a feature bit before 3.1 (keeping the releases in a sane state).
We use number 71 to avoid collisions with other pending kvm patches
as requested by Alexander Graf.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Avi Kivity <avi@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
598841ca99 ([S390] use gmap address
spaces for kvm guest images) changed kvm to use a separate address
space for kvm guests. This address space was switched in __vcpu_run
In some cases (preemption, page fault) there is the possibility that
this address space switch is lost.
The typical symptom was a huge amount of validity intercepts or
random guest addressing exceptions.
Fix this by doing the switch in sie_loop and sie_exit and saving the
address space in the gmap structure itself. Also use the preempt
notifier.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
CALL scripts/checksyscalls.sh
<stdin>:46:1: warning: "__IGNORE_migrate_pages" redefined
In file included from <stdin>:2:
arch/arm/include/asm/unistd.h:482:1: warning: this is the location of the previous definition
This is caused because we define __IGNORE_migrate_pages to be 1, but
in the case of nommu, it's defined to be empty. Fix this by just
defining the __IGNORE_ symbols to be empty.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch implements a workaround for erratum 764369 affecting
Cortex-A9 MPCore with two or more processors (all current revisions).
Under certain timing circumstances, a data cache line maintenance
operation by MVA targeting an Inner Shareable memory region may fail to
proceed up to either the Point of Coherency or to the Point of
Unification of the system. This workaround adds a DSB instruction before
the relevant cache maintenance functions and sets a specific bit in the
diagnostic control register of the SCU.
Cc: <stable@kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
It was pointed out by 'make versioncheck' that some includes of
linux/version.h are not needed in arch/mips/.
This patch removes them.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
To: LKML <linux-kernel@vger.kernel.org>
Cc: trivial@kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2540/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The comment for the slave PIC is changed from 8259A-1 to 8259A-2.
Signed-off-by: Hillf Danton <dhillf@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2693/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
If we could find tc on the tc list for @index, the found tc should be returned.
Signed-off-by: Hillf Danton <dhillf@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2692/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Recognize T4 and T5 chips. Treating them both as "T2 plus other
stuff" should be extremely safe and make sure distributions will work
when those chips actually ship to customers.
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xen:
xen/i386: follow-up to "replace order-based range checking of M2P table by linear one"
xen/irq: Alter the locking to use a mutex instead of a spinlock.
xen/e820: if there is no dom0_mem=, don't tweak extra_pages.
xen: disable PV spinlocks on HVM
This patch does several things:
- introduces __ethtool_get_settings which is called from ethtool code and
from drivers as well. Put ASSERT_RTNL there.
- dev_ethtool_get_settings() is replaced by __ethtool_get_settings()
- changes calling in drivers so rtnl locking is respected. In
iboe_get_rate was previously ->get_settings() called unlocked. This
fixes it. Also prb_calc_retire_blk_tmo() in af_packet.c had the same
problem. Also fixed by calling __dev_get_by_index() instead of
dev_get_by_index() and holding rtnl_lock for both calls.
- introduces rtnl_lock in bnx2fc_vport_create() and fcoe_vport_create()
so bnx2fc_if_create() and fcoe_if_create() are called locked as they
are from other places.
- use __ethtool_get_settings() in bonding code
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
v2->v3:
-removed dev_ethtool_get_settings()
-added ASSERT_RTNL into __ethtool_get_settings()
-prb_calc_retire_blk_tmo - use __dev_get_by_index() and lock
around it and __ethtool_get_settings() call
v1->v2:
add missing export_symbol
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> [except FCoE bits]
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
On x86-64, they were just wasteful: with the explicitly added (now
unnecessary) padding, the size of the alternatives structure was 16
bytes, and an alignment of 8 bytes didn't hurt much.
However, it was still silly, since the natural size and alignment for
the structure is actually just 12 bytes, 4-byte aligned since commit
59e97e4d6f ("x86: Make alternative instruction pointers relative").
So removing the padding, and removing the extra alignment is just a good
idea.
On x86-32, the alignment of 4 bytes was correct, but was incorrectly
hardcoded as 8 bytes in <asm/alternative-asm.h>. That header file had
used to be an x86-64 only header file, but various unification efforts
have made it be used for x86-32 too (ie the unification of rwlock and
rwsem).
That in turn caused x86-32 boot failures, because the extra alignment
would result in random zero-filled words in the altinstructions section,
causing oopses early at boot when doing alternative instruction
replacement.
So just remove all the alignment noise entirely. It's wrong, and it's
unnecessary. The section itself is already properly aligned by the
linker scripts, and all additions to the section had better be of the
proper 12-byte format, keeping it aligned. So if the align directive
were to ever make a difference, that would be an indication of a serious
bug to begin with.
Reported-by: Werner Landgraf <w.landgraf@ru.r>
Acked-by: Andrew Lutomirski <luto@mit.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
MII Kconfig option is apart of the core networking drivers and
by default NET_CORE is enabled so drivers selecting MII will
have MII enabled as well. It was found using the randconfig
option during testing, MII would be selected but NET_CORE
could be disabled. This caused a dependency error.
Resolved the dependency by selecting NET_CORE when MII is
selected.
Reported-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It was pointed out by 'make versioncheck' that some includes of
linux/version.h are not needed in arch/arm/.
This patch removes them.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
It was pointed out by 'make versioncheck' that the include of
linux/version.h is not needed in arch/x86/mm/mmio-mod.c .
This patch removes it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This is a resend from the original, changing the title from PATCH to
RFC(since this is a review for commit, and I should have put that the first go around).
and also removing some of the commit's with ia64 and bash since it is significant.
let me know if I might have missed anything etc..
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch fixes the typo in parameters passed to
x86_32 switch_to() description.
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The numbers obtained from the hypervisor really can't ever lead to an
overflow here, only the original calculation going through the order
of the range could have. This avoids the (as Jeremy points outs)
somewhat ugly NULL-based calculation here.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
The keypad controller requires a external pull-up for all the keypad
row lines. Fix the incorrect pad configuration for keypad controller
row lines by enabling the pad pull-up for the all row lines of the
keypad controller.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
clkdev framework uses global mutex to protect clock tree, so it is not
possible to call clk_get() in interrupt context. This patch fixes this
issue and makes system reset by watchdog call working again.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
According to commit 96d78686d4("ARM: S3C64XX: Add PWM backlight
support on SMDK6410") and commit f00207b255("ARM: SAMSUNG: Create
a common infrastructure for PWM backlight support"), this should
not be used anymore.
And this patch fixes follwing warning:
arch/arm/mach-s3c64xx/mach-smdk6410.c:296: warning: 'smdk6410_backlight_device' defined but not used
Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
[kgene.kim@samsung.com: modified commit message]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
System resume can't be completed because mct-frc isn't restarted
after system suspends. This patch restarts mct-frc during system
resume.
Reported-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The commit 5dfc54e087
("ARM: GIC: avoid routing interrupts to offline CPUs")
prevents routing interrupts to offline CPUs. But in
case of timer on EXYNOS4, the irq_set_affinity() method
is called in percpu_timer_setup() before CPU1 becomes
online. So this patch fixes routing timer interrupt to
offline CPU.
Reported-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
According to commmit af90f10d ("ARM: 6759/1: smp: Select
local timers vs broadcast timer support"), the return type
of local_timer_setup() should be int instead of void.
Reported-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The PLL4650C is used for VPLL on EXYNOS4 so should be fixed.
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
[kgene.kim@samsung.com: added message]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Since GPIOLIB is optional on alpha, GENERIC_GPIO must not be selected by
default. If GPIOLIB is enabled, it will select GENERIC_GPIO.
See <http://bugs.debian.org/638696> for an example of what 'def_bool y'
breaks.
Reported-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Cree <mcree@orcon.net.nz>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
richard@nod.at:
Fixes:
/usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../../lib/libc.a(strrchr.o): In function `rindex':
(.text+0x0): multiple definition of `strrchr'
If both STATIC_LINK and UML_NET_VDE are set to "y" libc's strrchr may
clash with the kernel implementation.
This workaround comes originally from Jeff Dike:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995#35
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1) take subarch-specific stuff to subarch_ptrace()
2) PTRACE_{PEEK,POKE}{TEXT,DATA} is handled by ptrace_request() just fine...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It's 32bit-only, not 64bit-only... And while we are at it, it's
set_fpxregs(), not set_fpregs()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
while not doing free_irq() from irq handler is commendable, kfree() on the
data passed to said handler before free_irq() is Not Good(tm). Freeing
the stack it's being run on is also not nice... Solution: delay actually
freeing stuff.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
... so set winch->fd to -1 before doing free_irq(), to avoid having
winch_interrupt() come from/during the latter and attempt to do
reactivate_fd() on something that's already gone.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
tty->count is decremented only after ->close() had been called and
several tasks can hit it in parallel. As the result, using tty->count
to check if you are the last one is broken. We end up leaving line->tty
not reset to NULL and the next IRQ on that sucker will blow up trying to
dereference pointers from kfree'd struct tty.
Fix is obvious: we need to use a counter of our own.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Some time ago Jeff prepared 42daba3165 ("uml: stop saving process FP
state") for UML to stop saving the process FP state between task
switches. The assumption was that since with SKAS0 every guest process
runs inside a host process context the host OS will take care of keeping
the proper FP state.
Unfortunately this is not true for multi-threaded applications, where
all guest threads share a single host process context yet all may use
the FPU on their own. Although I haven't verified it I suspect things
to be even worse in SKAS3 mode where all guest processes run inside a
single host process.
The patch reintroduces the saving and restoring of the FP context
between task switches.
[richard@nod.at: Ingo posted this patch in 2009, sadly it was never applied
and got lost. Now in 2011 the problem was reported by Gunnar.]
Signed-off-by: Ingo van Lil <inguin@gmx.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Reported-by: <gunnarlindroth@hotmail.com>
Tested-by: <gunnarlindroth@hotmail.com>
Cc: Stanislav Meduna <stano@meduna.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I could use out_close1, but that seems to be the code path to close the fd
returned by os_create_unix_socket, and using it to close the fd returned
by mkstemp might lead to some confusion, so I don't do it.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit b789ef518b ("slub: Add cmpxchg_double_slab()") tests for
cmpxchg_double support in the SLUB code and it breaks UML builds with
SLUB. Since UML does not support checking for CPU features, disable
CMPXCHG_DOUBLE just like CMPXCHG_LOCAL is disabled for UML.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
del_timer_sync() can cause a deadlock when called in interrupt context.
It is used with on_each_cpu() in some parts for sysfs files like bank*,
check_interval, cmci_disabled and ignore_ce.
However, use of on_each_cpu() results in calling the function passed
as the argument in interrupt context. This causes a flood of nested
warnings from del_timer_sync() (it runs on each CPU) caused even by a
simple file access like:
$ echo 300 > /sys/devices/system/machinecheck/machinecheck0/check_interval
Fortunately, these MCE-specific files are rarely used and AFAIK only few
MCE geeks experience this warning.
To remove the warning, move timer deletion outside of the interrupt
context.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
The patch "xen: use maximum reservation to limit amount of usable RAM"
(d312ae878b) breaks machines that
do not use 'dom0_mem=' argument with:
reserve RAM buffer: 000000133f2e2000 - 000000133fffffff
(XEN) mm.c:4976:d0 Global bit is set to kernel page fffff8117e
(XEN) domain_crash_sync called from entry.S
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
...
The reason being that the last E820 entry is created using the
'extra_pages' (which is based on how many pages have been freed).
The mentioned git commit sets the initial value of 'extra_pages'
using a hypercall which returns the number of pages (if dom0_mem
has been used) or -1 otherwise. If the later we return with
MAX_DOMAIN_PAGES as basis for calculation:
return min(max_pages, MAX_DOMAIN_PAGES);
and use it:
extra_limit = xen_get_max_pages();
if (extra_limit >= max_pfn)
extra_pages = extra_limit - max_pfn;
else
extra_pages = 0;
which means we end up with extra_pages = 128GB in PFNs (33554432)
- 8GB in PFNs (2097152, on this specific box, can be larger or smaller),
and then we add that value to the E820 making it:
Xen: 00000000ff000000 - 0000000100000000 (reserved)
Xen: 0000000100000000 - 000000133f2e2000 (usable)
which is clearly wrong. It should look as so:
Xen: 00000000ff000000 - 0000000100000000 (reserved)
Xen: 0000000100000000 - 000000027fbda000 (usable)
Naturally this problem does not present itself if dom0_mem=max:X
is used.
CC: stable@kernel.org
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Annotate the low level hardware locks which must not be preempted.
In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
uic->lock is protecting the interrupt controller hardware. This lock
can not be preempted on -rt.
In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.
Reported-by: Darcy L. Watkins <dwatkins@tranzeo.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The cmci_discover_lock can be taken in atomic context (cpu bring
up sequence) and therefore cannot be preempted on -rt.
In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The oprofilefs_lock can be taken in atomic context (in profiling
interrupts) and therefore cannot cannot be preempted on -rt -
annotate it.
In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
* 'fixes' of git://git.linaro.org/people/arnd/arm-soc:
ARM: CSR: add missing sentinels to of_device_id tables
ARM: cns3xxx: Fix newly introduced warnings in the PCIe code
ARM: cns3xxx: Fix compile error caused by hardware.h removed
ARM: davinci: fix cache flush build error
ARM: davinci: correct MDSTAT_STATE_MASK
ARM: davinci: da850 EVM: read mac address from SPI flash
OMAP: omap_device: fix !CONFIG_SUSPEND case in _noirq handlers
OMAP2430: hwmod: musb: add missing terminator to omap2430_usbhsotg_addrs[]
OMAP3: clock: indicate that gpt12_fck and wdt1_fck are in the WKUP clockdomain
OMAP4: clock: fix compile warning
OMAP4: clock: re-enable previous clockdomain enable/disable sequence
OMAP: clockdomain: Wait for powerdomain to be ON when using clockdomain force wakeup
OMAP: powerdomains: Make all powerdomain target states as ON at init
L3 subcaches 0 and 1 of AMD Family 15h CPUs can have a size of 2MB.
Update the calculation routine for the number of L3 indices to
reflect that.
Signed-off-by: Frank Arnold <frank.arnold@amd.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Rosenfeld Hans <Hans.Rosenfeld@amd.com>
Cc: Herrmann3 Andreas <Andreas.Herrmann3@amd.com>
Cc: Mike Travis <travis@sgi.com>
Cc: Frank Arnold <Frank.Arnold@amd.com>
Link: http://lkml.kernel.org/r/20110726170449.GB32536@aftab
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
It's not a good reason to allocate memory in the smp function call
just because someone thought it's the most conveniant place.
The AMD L3 data is coupled to the northbridge info by a pointer to the
corresponding north bridge data. So allocating it with the northbridge
data and referencing the northbridge in the cache_info code instead
uses less memory and gets rid of that atomic allocation hack in the
smp function call.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Mike Travis <travis@sgi.com>
Link: http://lkml.kernel.org/r/20110723212626.688229918@linutronix.de
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Commit f9b90566c ("x86: reduce stack usage in init_intel_cacheinfo")
introduced a shadow structure to reduce the stack usage on large
machines instead of making the smaller structure embedded into the
large one. That's definitely a candidate for the bad taste award.
Move the small struct into the large one and get rid of the ugly type
casts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Mike Travis <travis@sgi.com>
Link: http://lkml.kernel.org/r/20110723212626.625651773@linutronix.de
Signed-off-by: Ingo Molnar <mingo@elte.hu>
free_cache_attributes() kfree's:
per_cpu(ici_cpuid4_info, cpu)->l3
which is a pointer to memory which was allocated as a block in
amd_init_l3_cache(). l3 of a particular cpu points to a part of this
memory blob. The part and the rest of the blob are still referenced by
other cpus.
As far as I can tell from the git history this is a leftover from the
conversion from per cpu to node data with commit ba06edb63(x86,
cacheinfo: Make L3 cache info per node) and the following commit
f658bcfb2(x86, cacheinfo: Cleanup L3 cache index disable support)
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Mike Travis <travis@sgi.com>
Link: http://lkml.kernel.org/r/20110723212626.550539989@linutronix.de
Signed-off-by: Ingo Molnar <mingo@elte.hu>
For the initial architecture submission, not all of the DMA ops were
implemented. This patch adds the *map_page and *map_sg variants of the
DMA mapping ops.
This patch is currently of interest mainly to some drivers that haven't
been submitted upstream yet.
Signed-off-by: Jonas Bonn <jonas@southpole.se>
The of_device_id tables used for matching should be terminated with
empty sentinel values.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Barry Song <baohua.song@csr.com>
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
ARM: 7088/1: entry: fix wrong parameter name used in do_thumb_abort
ARM: 7080/1: l2x0: make sure I&D are not locked down on init
ARM: 7081/1: mach-integrator: fix the clocksource
NET: am79c961: fix race in link status code
ARM: 7067/1: mm: keep significant bits in pfn_valid
Commit be020f8618, "ARM: entry: abort-macro: specify registers to be
used for macros", while replacing register numbers with macro parameter
names, mismatched the name used for r1. For me, this resulted in user
space built for EABI with -march=armv4t -mtune=arm920t -mthumb-interwork
-mthumb broken on my OMAP1510 based Amstrad Delta (old ABI and no thumb
still worked for me though).
Fix this by using correct parameter name fsr instead of mismatched psr,
used by callers for another purpose.
Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Commit b03e7495a8 ("PCI: Set PCI-E Max Payload Size on fabric")
introduced a potential NULL pointer dereference in calls to
pcie_bus_configure_settings due to attempts to access pci_bus self
variables when the self pointer is NULL.
To correct this, verify that the self pointer in pci_bus is non-NULL
before dereferencing it.
Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Shyam Iyer <shyam_iyer@dell.com>
Signed-off-by: Jon Mason <mason@myri.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
commit d5341942d7 ("PCI: Make the struct
pci_dev * argument of pci_fixup_irqs const") did not change argument
of pdev_to_cnspci(), and thus introduced the following warnings:
CHECK arch/arm/mach-cns3xxx/pcie.c
pcie.c:177:60: warning: incorrect type in argument 1 (different modifiers)
pcie.c:177:60: expected struct pci_dev *dev
pcie.c:177:60: got struct pci_dev const *dev
CC arch/arm/mach-cns3xxx/pcie.o
pcie.c: In function 'cns3xxx_pcie_map_irq':
pcie.c:177: warning: passing argument 1 of 'pdev_to_cnspci' discards qualifiers from pointer target type
pcie.c:52: note: expected 'struct pci_dev *' but argument is of type 'const struct pci_dev *'
This patch fixes the issue.
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Commit c9d95fbe59 "ARM: convert PCI defines
to variables" deleted cns3xxx' hardware.h, but didn't remove references
for it, so do it now.
This patch removes lines that refer to hardware.h.
Signed-off-by: Tommy Lin <tommy.lin.1101@gmail.com>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This patch fixes the compilation brekage which
commits 208466dc ("usb: otg:OMAP4430: Powerdown
the internal PHY when USB is disabled") and
fb91cde4 ("usb: musb: OMAP4430: Power down
the PHY during board init") introduced when
building a OMAP2-only kernel.
LD .tmp_vmlinux1
arch/arm/mach-omap2/built-in.o:(.data+0x7ce0): undefined reference to
+`omap4430_phy_init'
arch/arm/mach-omap2/built-in.o:(.data+0x7ce4): undefined reference to
+`omap4430_phy_exit'
arch/arm/mach-omap2/built-in.o:(.data+0x7ce8): undefined reference to
+`omap4430_phy_power'
arch/arm/mach-omap2/built-in.o:(.data+0x7cec): undefined reference to
+`omap4430_phy_set_clk'
arch/arm/mach-omap2/built-in.o:(.data+0x7cf0): undefined reference to
+`omap4430_phy_suspend'
make: *** [.tmp_vmlinux1] Error 1
Reported-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
PV spinlocks cannot possibly work with the current code because they are
enabled after pvops patching has already been done, and because PV
spinlocks use a different data structure than native spinlocks so we
cannot switch between them dynamically. A spinlock that has been taken
once by the native code (__ticket_spin_lock) cannot be taken by
__xen_spin_lock even after it has been released.
Reported-and-Tested-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
The clock comparator on s390 uses the same format as the TOD clock.
If the value in the clock comparator is smaller than the current TOD
value an interrupt is pending. Use the CLOCK_EVT_FEAT_KTIME feature
to get the unmodified ktime of the next clockevent expiration and
use it to program the clock comparator without querying the TOD clock.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: john stultz <johnstul@us.ibm.com>
Link: http://lkml.kernel.org/r/20110823133143.153017933@de.ibm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The automatic increase of the min_delta_ns of a clockevents device
should be done in the clockevents code as the minimum delay is an
attribute of the clockevents device.
In addition not all architectures want the automatic adjustment, on a
massively virtualized system it can happen that the programming of a
clock event fails several times in a row because the virtual cpu has
been rescheduled quickly enough. In that case the minimum delay will
erroneously be increased with no way back. The new config symbol
GENERIC_CLOCKEVENTS_MIN_ADJUST is used to enable the automatic
adjustment. The config option is selected only for x86.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: john stultz <johnstul@us.ibm.com>
Link: http://lkml.kernel.org/r/20110823133142.494157493@de.ibm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This rewrites the U300 GPIO so as to use gpiolib and
struct gpio_chip instead of just generic GPIO, hiding
all the platform specifics and passing in GPIO chip
variant as platform data at runtime instead of the
compiletime kludges.
As a result <mach/gpio.h> is now empty for U300 and
using just defaults.
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Debian kernel maintainers <debian-kernel@lists.debian.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'perf-fixes-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
x86, perf: Check that current->mm is alive before getting user callchain
perf_event: Fix broken calc_timer_values()
perf events: Fix slow and broken cgroup context switch code
* 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xen:
xen/smp: Warn user why they keel over - nosmp or noapic and what to use instead.
xen: x86_32: do not enable iterrupts when returning from exception in interrupt context
xen: use maximum reservation to limit amount of usable RAM
The TNET variant of DaVinci compiles some code that it shares
with other DaVinci variants, however it has a V6 CPU rather than
an ARM926T, thus the hardcoded call to arm926_flush_kern_cache_all()
in sleep.S will obviously fail, and we need to build with the
v6_flush_kern_cache_all() call instead. This was triggered by
manually altering the DaVinci config to build the TNET version.
Cc: Dave Martin <dave.martin@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Cc: stable@kernel.org
MDSTAT.STATE occupies bits 0..5 according to all available documentation, so fix
the #define MDSTAT_STATE_MASK at last. Using the wrong value seems to have been
harmless though...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
DA850/OMAP-L138 EMAC driver uses random mac address instead of
a fixed one because the mac address is not stuffed into EMAC
platform data.
This patch provides a function which reads the mac address
stored in SPI flash (registered as MTD device) and populates the
EMAC platform data. The function which reads the mac address is
registered as a callback which gets called upon addition of MTD
device.
NOTE: In case the MAC address stored in SPI flash is erased, follow
the instructions at [1] to restore it.
[1] http://processors.wiki.ti.com/index.php/GSG:_OMAP-L138_DVEVM_Additional_Procedures#Restoring_MAC_address_on_SPI_Flash
Modifications in v2:
Guarded registering the mtd_notifier only when MTD is enabled.
Earlier this was handled using mtd_has_partitions() call, but
this has been removed in Linux v3.0.
Modifications in v3:
a. Guarded da850_evm_m25p80_notify_add() function and
da850evm_spi_notifier structure with CONFIG_MTD macros.
b. Renamed da850_evm_register_mtd_user() function to
da850_evm_setup_mac_addr() and removed the struct mtd_notifier
argument to this function.
c. Passed the da850evm_spi_notifier structure to register_mtd_user()
function.
Modifications in v4:
Moved the da850_evm_setup_mac_addr() function within the first
CONFIG_MTD ifdef construct.
Signed-off-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Cc: stable@kernel.org
Fighting unfixed U-Boots and other beasts that may the cache in
a locked-down state when starting the kernel, we make sure to
disable all cache lock-down when initializing the l2x0 so we
are in a known state.
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Rabin Vincent <rabin.vincent@stericsson.com>
Cc: Adrian Bunk <adrian.bunk@movial.com>
Cc: Rob Herring <robherring2@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reported-by: Jan Rinze <janrinze@gmail.com>
Tested-by: Robert Marklund <robert.marklund@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
I was intrigued by the fact that the clock stood still on
the Integrator, but it wasn't strange at all, because the
timer was set up all wrong and probably has been for a
while. With this patch the clock starts ticking again:
make the timer periodic (reload), |= on the divisor bit
and load the timer before starting it.
Cc: stable@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The suspend/resume _noirq handlers were #ifdef'd out in the
!CONFIG_SUSPEND case, but were still assigned to the dev_pm_ops
struct. Fix by defining them to NULL in the !CONFIG_SUSPEND case.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kevin Hilman <khilman@ti.com>
As it was decided not to export struct pt_regs to userspace, struct
sigcontext shouldn't be using it either. The pt_regs struct for OpenRISC
is kernel internal and the layout of the registers may change in the
future. The struct user_regs_struct is what is guaranteed to remain
stable, so struct sigcontext may use that instead.
This patch removes the usage of struct pt_regs in struct sigcontext and
makes according changes in signal.c to get the register layout right.
The usp field is removed from the sigcontext structure as this information
is already contained in the user_regs_struct.
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Reviewed-by: Emilio Cota <cota@braap.org>
Add a missing array terminator to omap2430_usbhsotg_addrs[]. Without
this terminator, the omap_hwmod resource building code runs off the
end of the array, resulting in at least this error -- if not worse
behavior:
[ 0.578002] musb-omap2430: failed to claim resource 4
[ 0.583465] omap_device: musb-omap2430: build failed (-16)
[ 0.589294] Could not build omap_device for musb-omap2430 usb_otg_hs
This should have been part of commit
78183f3fdf ("omap_hwmod: use a null
structure record to terminate omap_hwmod_addr_space arrays") but was
evidently missed.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
When ARCH_HAS_HOLES_MEMORYMODEL is selected, pfn_valid calls
memblock_is_memory to test validity of a pfn:
> memblock_is_memory(pfn << PAGE_SHIFT);
On LPAE systems this cuts off the top bits, as the shift occurs before
the value is promoted to a phys_addr_t.
This patch replaces the shift with a call to __pfn_to_phys (which casts
pfn to phys_addr_t before shifting), preventing the loss of significant
bits.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
We have hit a couple of customer bugs where they would like to
use those parameters to run an UP kernel - but both of those
options turn of important sources of interrupt information so
we end up not being able to boot. The correct way is to
pass in 'dom0_max_vcpus=1' on the Xen hypervisor line and
the kernel will patch itself to be a UP kernel.
Fixes bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=637308
CC: stable@kernel.org
Acked-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
If vmalloc page_fault happens inside of interrupt handler with interrupts
disabled then on exit path from exception handler when there is no pending
interrupts, the following code (arch/x86/xen/xen-asm_32.S:112):
cmpw $0x0001, XEN_vcpu_info_pending(%eax)
sete XEN_vcpu_info_mask(%eax)
will enable interrupts even if they has been previously disabled according to
eflags from the bounce frame (arch/x86/xen/xen-asm_32.S:99)
testb $X86_EFLAGS_IF>>8, 8+1+ESP_OFFSET(%esp)
setz XEN_vcpu_info_mask(%eax)
Solution is in setting XEN_vcpu_info_mask only when it should be set
according to
cmpw $0x0001, XEN_vcpu_info_pending(%eax)
but not clearing it if there isn't any pending events.
Reproducer for bug is attached to RHBZ 707552
CC: stable@kernel.org
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Use the domain's maximum reservation to limit the amount of extra RAM
for the memory balloon. This reduces the size of the pages tables and
the amount of reserved low memory (which defaults to about 1/32 of the
total RAM).
On a system with 8 GiB of RAM with the domain limited to 1 GiB the
kernel reports:
Before:
Memory: 627792k/4472000k available
After:
Memory: 549740k/11132224k available
A increase of about 76 MiB (~1.5% of the unused 7 GiB). The reserved
low memory is also reduced from 253 MiB to 32 MiB. The total
additional usable RAM is 329 MiB.
For dom0, this requires at patch to Xen ('x86: use 'dom0_mem' to limit
the number of pages for dom0') (c/s 23790)
CC: stable@kernel.org
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/p1023rds: Fix the error of bank-width of nor flash
powerpc/85xx: enable caam crypto driver by default
powerpc/85xx: enable the audio drivers in the defconfigs
In the p1023rds, a physical bus of nor flash is 16 bits width.
The bank-width is width (in bytes) of the bus width. So, the
value of bank-width of nor flash is not one, and it should be
two.
Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
corenet based SoCs have SEC4 h/w, so enable the SEC4 driver,
caam, and the algorithms it supports, and disable the
SEC2/3 driver, talitos.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Enable the audio drivers in the non-corenet 85xx defconfigs so that audio
is enabled on the Freescale P1022DS reference board.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Commit de2d1a524e ("KVM: Fix register corruption in pvclock_scale_delta")
introduced a mul instruction that may have only a memory operand; the
assembler therefore cannot select the correct size:
pvclock.s:229: Error: no instruction mnemonic suffix given and no register
operands; can't size instruction
In this example the assembler is:
#APP
mul -48(%rbp) ; shrd $32, %rdx, %rax
#NO_APP
A simple solution is to use mulq.
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Avi Kivity <avi@redhat.com>
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: pm: avoid writing the auxillary control register for ARMv7
ARM: pm: some ARMv7 requires a dsb in resume to ensure correctness
ARM: pm: arm920/926: fix number of registers saved
ARM: pm: CPU specific code should not overwrite r1 (v:p offset)
ARM: 7066/1: proc-v7: disable SCTLR.TE when disabling MMU
ARM: 7065/1: kexec: ensure new kernel is entered in ARM state
ARM: 7003/1: vexpress: Add clock definition for the SP805.
ARM: 7051/1: cpuimx* boards: fix mach-types errors
ARM: 7019/1: Footbridge: select CLKEVT_I8253 for ARCH_NETWINDER
ARM: 7015/1: ARM errata: Possible cache data corruption with hit-under-miss enabled
ARM: 7014/1: cache-l2x0: Fix L2 Cache size calculation.
ARM: 6967/1: ep93xx: ts72xx: fix board model detection
ARM: 6965/1: ep93xx: add model detection for ts-7300 and ts-7400 boards
ARM: cache: detect VIPT aliasing I-cache on ARMv6
ARM: twd: register clockevents device before enabling PPI
ARM: realview: ensure visibility of writes during reset
ARM: perf: make name of arm_pmu_type consistent
ARM: perf: fix prototype of release_pmu
ARM: fix perf build with uclibc toolchains
These were missed in commit f5b9409973 "All Arch: remove linkage
for sys_nfsservctl system call" due to them having no sys_ prefix
(presumably).
Cc: NeilBrown <neilb@suse.de>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc32,sun4d: Change IPI IRQ level to prevent collision between IPI and timer interrupt
sparc: Remove another reference to nfsservctl
* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x:
sh: fix the compile error in setup-sh7757.c
serial: sh-sci: report CTS as active for get_mctrl
sh: Add unaligned memory access for PC relative intructions
sh: Fix unaligned memory access for branches without delay slots
sh: Fix up fallout from cpuidle changes.
serial: sh-sci: console Runtime PM support
sh: Fix conflicting definitions of ptrace_triggered
serial: sh-sci: fix DMA build by including dma-mapping.h
serial: sh-sci: Fix up default regtype probing.
sh: intc: enable both edges GPIO interrupts on sh7372
shwdt: fix usage of mod_timer
clocksource: sh_cmt: wait for CMCNT on init V2
On Sun4d systems running in SMP mode, IRQ 14 is used for timer interrupts
and has a specialized interrupt handler. IPI is currently set to use IRQ 14
as well, which causes it to trigger the timer interrupt handler, and not the
IPI interrupt handler.
The IPI interrupt is therefore changed to IRQ 13, which is the highest
normally handled interrupt. This IRQ is also used for SBUS interrupts,
however there is nothing in the IPI/SBUS interrupt handlers that indicate
that they will not handle sharing the interrupt.
(IRQ 13 is indicated as audio interrupt, which is unlikely to be found in a
sun4d system)
Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add clock control support for sh7372 CMT hardware blocks.
No upstream sh7372 boards are making use of CMT3 + CMT4,
but the sh7372 hardware happens to come out of reset with
all CMT MSTP clocks _enabled_, so to save power we need
to implement a fix in software to shut down unused clocks.
This patch relies on the recently merged
794d78f drivers: sh: late disabling of clocks V2
to make sure the unused clocks get disabled as expected.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Add clock control support for sh7372 MSIOF hardware blocks.
No upstream sh7372 boards are making use of MSIOF0->2,
but the sh7372 hardware happens to come out of reset with
all MSIOF MSTP clocks _enabled_, so to save power we need
to implement a fix in software to shut down unused clocks.
This patch relies on the recently merged
794d78f drivers: sh: late disabling of clocks V2
to make sure the unused clocks get disabled as expected.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
USB-DMAC1 needs SMSTPCR4/MSTP407 controls, not MSTP214
this patch tested on mackerel board
Reported-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch removes support for the SGX interrupt source in
the sh7372 INTCS controller.
The SGX hardware block included in sh7372 is already hooked
up to the ARM Cortex-A8 core using the INTCA controller,
so SGX users are encouraged to make use of that interrupt
source instead.
Removing support for the SGX interrupt source in INTCS
simplifies the sh7372 power management code by allowing
us to assume that only INTCA needs to be powered on to
operate the SGX hardware.
If the INTCS interrupt source would be kept then the kernel
would be forced to deal with additional dependencies that does
not follow the regular power domain hiearachy. With this
patch in place we can safely power down INTCS while the
SGX is operating.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Fix the following build errors:
CC arch/sh/kernel/cpu/sh4a/setup-sh7757.o
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:681: error: implicit declaration of function ‘DMA_BIT_MASK’
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:681: error: initializer element is not constant
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:681: error: (near initialization for ‘usb_ehci_device.dev.coherent_dma_mask’)
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:705: error: initializer element is not constant
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:705: error: (near initialization for ‘usb_ohci_device.dev.coherent_dma_mask’)
make[3]: *** [arch/sh/kernel/cpu/sh4a/setup-sh7757.o] Error 1
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adds unaligned memory access support for the following instructions:
mov.w @(disp,PC),Rn
mov.l @(disp,PC),Rn
These instructions are often used on SH2A toolchains.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch just clears the return code for those cases where an
unaligned memory access occurs on branch instructions without a
delay slot.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
For ARMv7 kernels running in the non-secure world, writing to the
auxillary control register causes an abort, so we must avoid directly
writing the auxillary control register. If the ACR has already been
reinitialized by SoC code, don't try to restore it.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add a dsb after the isb to ensure that the previous writes to the
CP15 registers take effect before we enable the MMU.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM920 and ARM926 save four registers, not three. Fix the size of
the suspend region required.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
r1 stores the v:p offset from the CPU invariant resume code, and is
expected to be preserved by the CPU specific code. Overwriting it is
not a good idea.
We've managed to get away with it on sa1100 platforms because most
happen to have PHYS_OFFSET == PAGE_OFFSET, but that may not be the
case depending on kernel configuration. So fix this latent bug.
This fixes xsc3 as well which was saving and restoring this register
independently.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
cpu_v7_reset disables the MMU and then branches to the provided address.
On Thumb-2 kernels, we should take care to clear the Thumb Exception
enable bit in the System Control Register, otherwise this may wreak
havok in the code to which we are branching (for example, an ARM kernel
image via kexec).
Reviewed-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Commit 540b5738 ("ARM: 6999/1: head, zImage: Always Enter the kernel in
ARM state") mandates that the kernel should be entered in ARM state.
If a Thumb-2 kernel kexecs a new kernel image, we need to ensure that
we change state when branching to the new code. This patch replaces a
mov pc, lr with a bx lr on Thumb-2 kernels so that we transition to ARM
state if need be.
Reviewed-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch updates the recently submitted
"Associate the HDMI clock together with LCDC1 on sh7372"
to V2 with the following change:
- Use lcdc1_device on AP4EVB to build properly.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
The nfsservctl system call is now gone, so we should remove all
linkage for it.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Those info will be used when spi controller driver setup
max3110 as a slave device
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] memory hotplug: only unassign assigned increments
[S390] Change default action from reipl to stop for on_restart
[S390] arch/s390/kernel/ipl.c: correct error detection check
[S390] drivers/s390/block/dasd_ioctl.c: add missing kfree
[S390] nss,initrd: kernel image and initrd must be in different segments
According to the SFI specification irq number 0xFF means device has no
interrupt or interrupt attached via GPIO.
Currently, we don't handle this special case and set irq field in
*_board_info structs to 255. It leads to confusion in some drivers.
Accelerometer driver tries to register interrupt 255, fails and prints
"Cannot get IRQ" to dmesg.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This bug causes the IECSR register clear failure. In this case, the RETE
(retry error threshold exceeded) interrupt will be generated and cannot be
cleared. So the related ISR may be called persistently.
The RETE bit in IECSR is cleared by writing a 1 to it.
Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the following build errors:
drivers/tty/serial/8250_early.c:160: error: 'BASE_BAUD' undeclared (first use in this function): 1 errors in 1 logs
drivers/tty/serial/8250_early.c:37:24: error: asm/serial.h: No such file or directory: 1 errors in 1 logs
I am not sure if (1843200 / 16) is suitable for cris, but most other
arch's define it as this value.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The bug was accidentally found by the following program:
#include <asm/sysinfo.h>
#include <asm/unistd.h>
#include <sys/syscall.h>
static int setsysinfo(unsigned long op, void *buffer, unsigned long size,
int *start, void *arg, unsigned long flag) {
return syscall(__NR_osf_setsysinfo, op, buffer, size, start, arg, flag);
}
int main(int argc, char **argv) {
short x[10];
unsigned int buf[2] = { SSIN_UACPROC, UAC_SIGBUS, };
setsysinfo(SSI_NVPAIRS, buf, 1, 0, 0, 0);
int *y = (int*) (x+1);
*y = 0;
return 0;
}
The program shoud fail on SIGBUS, but didn't.
The patch is a second part of userspace flag fix (commit 745dd2405e
"Alpha: Rearrange thread info flags fixing two regressions").
Deleted outdated out-of-sync 'UAC_SHIFT' (the cause of bug) in favour of
'ALPHA_UAC_SHIFT'.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Acked-by: Michael Cree <mcree@orcon.net.nz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The function hv_post_msg() can fail because of transient resource
conditions. It may be useful to retry the operation.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
entry_32.S contained a hardcoded alternative instruction entry, and the
format changed in commit 59e97e4d6f ("x86: Make alternative
instruction pointers relative").
Replace the hardcoded entry with the altinstruction_entry macro. This
fixes the 32-bit boot with CONFIG_X86_INVD_BUG=y.
Reported-and-tested-by: Arnaud Lacombe <lacombar@gmail.com>
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
While removing custom rendezvous code and switching to stop_machine,
commit 192d885742 ("x86, mtrr: use stop_machine APIs for doing MTRR
rendezvous") completely dropped mtrr setting code on !CONFIG_SMP
breaking MTRR settting on UP.
Fix it by removing the incorrect CONFIG_SMP.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Anders Eriksson <aeriksson@fastmail.fm>
Tested-and-acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch fixes following building error:
--
arch/arm/mach-footbridge/dc21285.c: In function 'dc21285_preinit':
arch/arm/mach-footbridge/dc21285.c:299:2: error: 'vga_base' undeclared (first use in this function)
arch/arm/mach-footbridge/dc21285.c:299:2: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [arch/arm/mach-footbridge/dc21285.o] Error 1
--
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
This patch fixed following building error:
--
arch/arm/mach-orion5x/pci.c: In function 'orion5x_pci_sys_setup':
arch/arm/mach-orion5x/pci.c:563:2: error: 'vga_base' undeclared (first use in this function)
arch/arm/mach-orion5x/pci.c:563:2: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [arch/arm/mach-orion5x/pci.o] Error 1
make[1]: *** Waiting for unfinished jobs....
--
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Upstream commit d5341942d7 "PCI: Make the
struct pci_dev * argument of pci_fixup_irqs const." leaked an extra
"const" into an actual call site (vs a proto/decl) which causes this:
arch/arm/mach-orion5x/dns323-setup.c: In function 'dns323_pci_map_irq':
arch/arm/mach-orion5x/dns323-setup.c:80: error: expected expression before 'const'
arch/arm/mach-orion5x/dns323-setup.c:80: error: too few arguments to function 'orion5x_pci_map_irq'
make[3]: *** [arch/arm/mach-orion5x/dns323-setup.o] Error 1
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
The generic PM domains framework currently doesn't work with devices
whose power.irq_safe flag is set, because runtime PM callbacks for
such devices are run with interrupts disabled and the callbacks
provided by the generic PM domains framework use domain mutexes
and may sleep. However, such devices very well may belong to
power domains on some systems, so the generic PM domains framework
should take them into account.
For this reason, modify the generic PM domains framework so that the
domain .power_off() and .power_on() callbacks are never executed for
a domain containing devices with power.irq_safe set, although the
.stop_device() and .start_device() callbacks are still run for them.
Additionally, introduce a flag allowing the creator of a
struct generic_pm_domain object to indicate that its .stop_device()
and .start_device() callbacks may be run in interrupt context
(might_sleep_if() triggers if that flag is not set and one of those
callbacks is run in interrupt context).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
The PM QoS implementation files are better named
kernel/power/qos.c and include/linux/pm_qos.h.
The PM QoS support is compiled under the CONFIG_PM option.
Signed-off-by: Jean Pihet <j-pihet@ti.com>
Acked-by: markgross <markgross@thegnar.org>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Since the PM clock management code in drivers/base/power/clock_ops.c
is used for both runtime PM and system suspend/hibernation, the
definitions of data structures and headers related to it should not
be located in include/linux/pm_rumtime.h. Move them to a separate
header file.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Currently pm_genpd_runtime_resume() has to walk the list of devices
from the device's PM domain to find the corresponding device list
object containing the need_restore field to check if the driver's
.runtime_resume() callback should be executed for the device.
This is suboptimal and can be simplified by using power.sybsys_data
to store device information used by the generic PM domains code.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Introduce struct pm_subsys_data that may be subclassed by subsystems
to store subsystem-specific information related to the device. Move
the clock management fields accessed through the power.subsys_data
pointer in struct device to the new strucutre.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Instead of coding the undocumented dependencies between power domains
A3RV and A4LC on SH7372 directly into the low-level power up/down
routines, make A3RV be a subdomain of A4LC, which will cause the
same dependecies to hold.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>
Commit c03f007a8b (OMAP: PM:
omap_device: add system PM methods for PM domain handling) mistakenly
used SET_SYSTEM_SLEEP_PM_OPS() when trying to configure custom methods
for the PM domains noirq methods. Fix that by setting only the
suspend_noirq and resume_noirq methods with custom versions.
Note that all other PM domain methods (including the "normal"
suspend/resume methods) are populated using USE_PLATFORM_PM_SLEEP_OPS,
which configures them all to the default subsystem (platform_bus)
methods.
Reported-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Associate the HDMI clock together with LCDC1 on sh7372.
Without this patch Suspend-to-RAM hangs on the boards
AP4EVB and Mackerel. The code hangs in the LCDC driver
where the software is waiting forever for the hardware to
power down. By explicitly associating the HDMI clock with
LCDC1 we can make sure the HDMI clock is enabled using
Runtime PM whenever the driver is accessing the hardware.
This HDMI and LCDC1 dependency is documented in the sh7372
data sheet. Older kernels did work as expected but the
recently merged (3.1-rc)
794d78f drivers: sh: late disabling of clocks V2
introduced code to turn off clocks lacking software reference
which happens to include the HDMI clock that is needed by
LCDC1 to operate as expected.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
The change:
commit fce8dc0642
Author: Andy Lutomirski <luto@mit.edu>
Date: Wed Aug 10 11:15:31 2011 -0400
x86-64: Wire up getcpu syscall
added getcpu as a real syscall, so we shouldn't ignore it any more.
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/b4cb60ef45db3a675a0e2b9d51bcb022b0a9ab9c.1314195481.git.luto@mit.edu
Reported-by: H.J. Lu <hjl.tools@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
The tracing code used sched_clock() to get tracing timestamps, which
ends up calling xen_clocksource_read(). xen_clocksource_read() must
disable preemption, but if preemption tracing is enabled, this results
in infinite recursion.
I've only noticed this when boot-time tracing tests are enabled, but it
seems like a generic bug. It looks like it would also affect
kvm_clocksource_read().
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
The main purpose for PSW restart will be kdump. Therefore customers will
issue "system restart" for creating a dump. If kdump is not enabled,
currently "PSW restart" will reboot the system and then no dump can
be created any more. In order to still allow a manual stand-alone dump in
the case a user issues "PSW restart" on a system that has not enabled
kdump we now stop the system.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
reipl_fcp_kset was just initialized, so it appears that it should be tested
instead of reipl_kset.
Signed-off-by: Julia Lawall <julia@diku.dk>
Reported-by: Suman Saha <sumsaha@gmail.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
When IPL'ing from a block device and an NSS should be created we must
make sure that the kernel image and the initrd are in different 1MB
segments. Otherwise creating the NSS will fail.
So we make sure the initrd is 4MB behind the end of the kernel image
like we do already when IPL via the VM reader is performed.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This was a typo in clockdev declaration for at91sam9261 SoC.
Fix the kernel hanging when switching clocksource to TC (tcb_clksrc).
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Remy Bohmer <linux@bohmer.net>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
It seems that an entry for the SP805 watchdog in the table of clocks was
missing. This results in the sp805_wdt driver rejecting the device with
the following errors:
sp805-wdt mb:wdt: Clock not found
sp805-wdt mb:wdt: Probe Failed!!!
sp805-wdt: probe of mb:wdt failed with error -2
While not obviously stated in the hardware docs, the onboard SP810's
"REFCLK" is connected to a 32.768KHz crystal, and this drives the
watchdog. Add a struct clk and corresponding lookup entry for it.
Signed-off-by: Nick Bowler <nbowler@elliptictech.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds missing include of linux/types.h to fix below build error.
CC arch/arm/mach-mv78xx0/mpp.o
In file included from arch/arm/mach-mv78xx0/include/mach/gpio.h:9,
from /home/axel/repos/git/linux-2.6/arch/arm/include/asm/gpio.h:5,
from include/linux/gpio.h:18,
from arch/arm/mach-mv78xx0/mpp.c:10:
arch/arm/plat-orion/include/plat/gpio.h:28: error: expected declaration specifiers or '...' before 'u32'
make[1]: *** [arch/arm/mach-mv78xx0/mpp.o] Error 1
make: *** [arch/arm/mach-mv78xx0] Error 2
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Reviewed-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tegra's <mach/gpio.h> uses type bool; we need to include <linux/types.h>
to get the definition.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
By not definining a custom gpio_to_irq, the default gpiolib version is
used, allowing platform consolidation.
irq_to_gpio is deprecated and in the process of being removed. Make that
happen now for ARM Tegra.
This also partially fixes the Tegra build; it was broken because gpio.h
referred to EINVAL, which wasn't always defined when <mach/gpio.h> was
included.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86-32, vdso: On system call restart after SYSENTER, use int $0x80
x86, UV: Remove UV delay in starting slave cpus
x86, olpc: Wait for last byte of EC command to be accepted
When we enter a 32-bit system call via SYSENTER or SYSCALL, we shuffle
the arguments to match the int $0x80 calling convention. This was
probably a design mistake, but it's what it is now. This causes
errors if the system call as to be restarted.
For SYSENTER, we have to invoke the instruction from the vdso as the
return address is hardcoded. Accordingly, we can simply replace the
jump in the vdso with an int $0x80 instruction and use the slower
entry point for a post-restart.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/CA%2B55aFztZ=r5wa0x26KJQxvZOaQq8s2v3u50wCyJcA-Sc4g8gQ@mail.gmail.com
Cc: <stable@kernel.org>
Fixes fallout due to the removal of the cast in commit aa462abe8a
("mm: fix __page_to_pfn for a const struct page argument")
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Because THREAD_SIZE is defined as PAGE_SIZE << THREAD_ORDER on x86, the
call of get_order(THREAD_SIZE) can be replaced with THREAD_ORDER.
Signed-off-by: Zhao Jin <cronozhj@gmail.com>
Link: http://lkml.kernel.org/r/4E4FB5A9.700@gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The Synopsys DesignWare UART in pmc-sierra msp71xx has an extra feature
where the UART detects a write attempt to the LCR whilst busy and raises
an interrupt. The driver needs to clear the interrupt and rewrite the
LCR. Move this into platform code and out of the 8250 driver.
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
With uart tx/rx/err interrupt handling moved into the driver for s3c64xx
and later SoC's, the uart interrupt handling in plaform code can be removed.
The uart device irq resources is reduced to one and the related unused
macros are removed.
Suggested-by: Grant Likely <grant.likely@secretlab.ca>
CC: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The ePAPR embedded hypervisor specification provides an API for "byte
channels", which are serial-like virtual devices for sending and receiving
streams of bytes. This driver provides Linux kernel support for byte
channels via three distinct interfaces:
1) An early-console (udbg) driver. This provides early console output
through a byte channel. The byte channel handle must be specified in a
Kconfig option.
2) A normal console driver. Output is sent to the byte channel designated
for stdout in the device tree. The console driver is for handling kernel
printk calls.
3) A tty driver, which is used to handle user-space input and output. The
byte channel used for the console is designated as the default tty.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PGDIR_SHIFT and PMD_SHIFT for the classic 2-level page table format have
the same value (21). This patch converts the PGDIR_* uses in the kernel
to the PMD_* equivalent so that LPAE builds can reuse the same code.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This is to avoid a compiler warning when invoking the __bus_to_virt()
macro. The dma_to_virt() function gets addresses within the 32-bit
range.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The PNX4008 header file is using the generic gpio and gpiolib
namespace in <mach/gpio.h> yet the GPIO interface is not generic
at all so rename it to <mach/gpio-pnx4008.h>
This fixes a build failure in current -next: the includes were
changed from <mach/gpio.h> to <linux/gpio.h> but since this
platform isn't using generic gpio <linux/gpio.h> did not include
<mach/gpio.h> and things broke apart.
Acked-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
After recent consolidations the Nomadik <plat/gpio.h> is entirely
superfluous, so get rid of it.
Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The oscillator that supplies GPT12_FCLK and WDT1_FCLK exists in the
WKUP powerdomain[1]. This resolves at least one boot-time warning:
omap_hwmod: gpt12_fck: missing clockdomain for gpt12_fck.
1. _OMAP34xx Multimedia High Security (HS) Device Silicon Revision 3.1.x
Security Addendum Version K (SWPU119K)_ Figure 3-29. August 2010.
This patch add a flag for Process-Context Identifiers (PCIDs) aka
Address Space Identifiers (ASIDs) aka Tagged TLB support.
Signed-off-by: Arun Thomas <arun.thomas@gmail.com>
Link: http://lkml.kernel.org/r/1313782943-3898-1-git-send-email-arun.thomas@gmail.com
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/tracing: Fix tracing config option properly
xen: Do not enable PV IPIs when vector callback not present
xen/x86: replace order-based range checking of M2P table by linear one
xen: xen-selfballoon.c needs more header files
Steven Rostedt says we should use CONFIG_EVENT_TRACING.
Cc:Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Fix regression for HVM case on older (<4.1.1) hypervisors caused by
commit 99bbb3a84a
Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Date: Thu Dec 2 17:55:10 2010 +0000
xen: PV on HVM: support PV spinlocks and IPIs
This change replaced the SMP operations with event based handlers without
taking into account that this only works when the hypervisor supports
callback vectors. This causes unexplainable hangs early on boot for
HVM guests with more than one CPU.
BugLink: http://bugs.launchpad.net/bugs/791850
CC: stable@kernel.org
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-and-Reported-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
I made some changes to the entry in the ARM Machine Registry after
submission which was the wrong thing to do.
This patch should help to fix this error.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This function is not used in the assabet build, and on the whole the
call is hard to consolidate so get rid of it from this machine.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As per example from the other ARM boards, push the SA100
GPIO driver down to the GPIO subsystem so it can be consolidated.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The <mach/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Barry Song <bs14@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As per example from the other ARM boards, push the LPC32XX
GPIO driver down to the GPIO subsystem so it can be consolidated.
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Barry Song <bs14@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The ixp2000 abuses the <mach/gpio.h> namespace by not implementing
any generic GPIO nor gpiolib functions in it - just custom GPIO.
Rename the header to <mach/gpio-ixp2000.h> for clarity.
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove the ep93xx machine specific dependencies for gpio_to_irq() by
hooking up the callback in the driver and using __gpio_to_irq.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The <mach/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As per example from the other ARM boards, push the DaVinci TNET
GPIO driver down to the GPIO subsystem so it can be consolidated.
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As per example from the other ARM boards, push the DaVinci GPIO
driver down to the GPIO subsystem so it can be consolidated.
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Enabling the LEDs on the ks8695 doesn't even compile, fix it with
a proper include and also replace a <mach/gpio.h> with the proper
<linux/gpio.h>.
Cc: zeal <zealcook@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Acked-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The <mach/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.
Cc: zeal <zealcook@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Acked-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As per example from the other ARM boards, push the KS8695 GPIO
driver down to the GPIO subsystem so it can be consolidated.
Cc: zeal <zealcook@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Acked-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This function is not used in the U300 build, and on the whole the
call is hard to consolidate so get rid of it from this machine.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The <mach/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The <[plat|mach]/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix the following compile warning:
arch/arm/mach-omap2/clock44xx_data.c: In function 'omap4xxx_clk_init':
arch/arm/mach-omap2/clock44xx_data.c:3371:6: warning: 'cpu_clkflg' may be used uninitialized in this function
The approach taken here is intended to work if omap4xxx_clk_init() is
converted into an initcall.
Thanks to Bjarne Steinsbo <bsteinsbo@gmail.com> for proposing another
approach.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Bjarne Steinsbo <bsteinsbo@gmail.com>
If we can't push the pending register windows onto the user's stack,
we disallow signal delivery even if the signal would be delivered on a
valid seperate signal stack.
Add a register window save area in the signal frame, and store any
unsavable windows there.
On sigreturn, if any windows are still queued up in the signal frame,
try to push them back onto the stack and if that fails we kill the
process immediately.
This allows the debug/tst-longjmp_chk2 glibc test case to pass.
Signed-off-by: David S. Miller <davem@davemloft.net>
After commit 665d001338 ("OMAP2+: hwmod:
Follow the recommended PRCM module enable sequence"), device drivers
for OMAP IP blocks that do not use runtime PM can cause oopses or
kernel instability[1][2].
This is because those non-runtime PM drivers do not use the hwmod
code, which implements the correct IP block enable and disable
sequence.
Several options for dealing with this problem have been proposed:
1. Add a new field to the OMAP struct clk to mark clocks that are
currently used by non-runtime PM drivers. Modify the clock code to
use the old clockdomain sequence for these marked clocks. As
drivers are converted to use runtime PM, remove the annotation from
the clocks.
2. Similar to #1, but associate the flag with the struct omap_clk
instead.
3. Add IDLEST wait support to the OMAP4 clock code, similar to the way
it is implemented for OMAP2/3, and enable it in each struct clk
currently used by non-runtime PM drivers. As drivers are converted
to use runtime PM, remove the annotation from the clocks.
4. Do nothing; leave the problem to those responsible for the
unconverted drivers.
5. Re-enable clock-based clockdomain control in the OMAP4 clock code.
This would revert back to the behavior of Linux 3.0, simply with a
slightly longer module enable/disable latency.
Unfortunately, no approach seemed particularly good. Options 1
through 3 seemed unwise due to the following reasons:
A. The OMAP struct clks are intended primarily to describe hardware
clock nodes, and the intention is that no driver-specific data
should be stored there (applies to #1)
B. The resulting patch would have been quite large for the -rc series
(applies to #1, #2, #3)
C. The patch would have been a new, yet temporary hack; and similar fixes
have drawn negative comments in the recent past (see for example [3])
Option 4 is undesirable because commit
665d001338 ("OMAP2+: hwmod: Follow the
recommended PRCM module enable sequence") has resulted in a less
stable kernel; and kernel stability is more important than OMAP4 power
management.
Option 5 is the approach taken in this patch. This seemed to be the
least intrusive approach for 3.1-rc.
The approach in this patch was originally proposed by Ohad Ben-Cohen
<ohad@wizery.com>. I'm simply writing the commit message and passing
it along.
...
Thanks to Luciano Coelho <coelho@ti.com> for reporting the problem.
Thanks to Ohad Ben-Cohen <ohad@wizery.com> for tracking the problem
down, generating a temporary workaround, and proposing a patch to deal
with the problem. Thanks to Rajendra Nayak <rnayak@ti.com> for
proposing another patch to deal with the problem. Thanks to Felipe
Balbi <balbi@ti.com> for comments.
1. Coelho, Luciano <coelho@ti.com>. _Re: Oops on ehci_hcd when
booting 3.0.0-rc2 on panda_. Tue, 09 Aug 2011 14:26:08 +0300.
Posted to the <linux-omap@vger.kernel.org> mailing list. Available
from (among others)
http://www.spinics.net/linux/lists/linux-omap/msg55213.html
2. Munegowda, Keshava <keshava_mgowda@ti.com>. _Re: Oops on ehci_hcd
when booting 3.0.0-rc2 on panda_. Thu, 11 Aug 2011 13:51:05 +0530.
Posted to the <linux-omap@vger.kernel.org> mailing list. Available
from (among others)
http://www.spinics.net/linux/lists/linux-omap/msg55371.html
3. King, Russell <linux@arm.linux.org.uk>. _Re: [PATCH 5/8] OMAP4:
PM: TEMP: Prevent l3init from idling/force sleep_. Thu, 23 Jun
2011 16:22:49 +0100. Posted to the <linux-omap@vger.kernel.org>
mailing list. Available from (among others)
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg51392.html
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Luciano Coelho <coelho@ti.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
While using clockdomain force wakeup method, not waiting for powerdomain
to be effectively ON may end up locking the clockdomain FSM until a
next wakeup event occurs.
One such issue was seen on OMAP4430, where L4_PER was periodically
getting stuck in in-transition state when transitioning from from OSWR to ON.
This issue was reported and investigated by Patrick Titiano <p-titiano@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Reported-by: Patrick Titiano <p-titiano@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
[paul@pwsan.com: updated to apply; added transition wait on clkdm_deny_idle();
remove two superfluous pwrdm_wait_transition() calls]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Program all powerdomain target state as ON; this is to prevent domains
from hitting low power states (if bootloader has target states set to
something other than ON) and potentially even losing context while PM
is not fully initialized, which can cause the system to crash. The PM
late init code can then program the desired target state for all the
power domains.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[paul@pwsan.com: dropped comment typo hunk; fixed comment indent and moved
to kerneldoc; moved code to pwrdm_init(); changed pwrdm_init() argument name
to prevent clash; cleaned up patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
F_INPROGRESS isn't exposed to userspace. To me it makes more sense in
fl_flags....
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: OF: Don't crash when bridge parent is NULL.
PCI: export pcie_bus_configure_settings symbol
PCI: code and comments cleanup
PCI: make cardbus-bridge resources optional
PCI: make SRIOV resources optional
PCI : ability to relocate assigned pci-resources
PCI: honor child buses add_size in hot plug configuration
PCI: Set PCI-E Max Payload Size on fabric
Should be passing the parent clk object when
calling for parent rate.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch increases reset delay from 50 usec to 80 usec for
USB HOST PHY. In order to reset USB HOST PHY controller properly,
a little extra time is required during its reset cycle.
Signed-off-by: Yulgon Kim <yulgon.kim@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds chained IRQ enter/exit functions to gpio interrupt
handler in order to function correctly on primary controllers with
different methods of flow control.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds chained IRQ enter/exit functions to external interrupt
handler in order to function correctly on primary controllers with
different methods of flow control.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds chained IRQ enter/exit functions to timer
interrupt handler in order to function correctly on primary
controllers with different methods of flow control.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
When S3C_PM_DEBUG_LED_SMDK is enabled for suspend/resume debugging, the following
compilation error occurs:
arch/arm/mach-s3c64xx/pm.c: In function 's3c_pm_debug_smdkled':
arch/arm/mach-s3c64xx/pm.c:41: error: implicit declaration of function 'gpio_set_value'
arch/arm/mach-s3c64xx/pm.c:41: error: implicit declaration of function 'S3C64XX_GPN'
arch/arm/mach-s3c64xx/pm.c: In function 's3c64xx_pm_init':
arch/arm/mach-s3c64xx/pm.c:184: error: implicit declaration of function 'gpio_request'
arch/arm/mach-s3c64xx/pm.c:188: error: implicit declaration of function 'gpio_direction_output'
Fix the error by including linux/gpio.h
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Fixed the following warning for S5PV210.
arch/arm/mach-s5pv210/pm.c: In function 's5pv210_pm_add':
arch/arm/mach-s5pv210/pm.c:139: warning: assignment from
incompatible pointer type
Also, staticized the function.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This is a regression fix after migration to the external GIC.
The breakage has been introduced in commit 69644a8e23
("ARM: EXYNOS4: modify interrupt mappings for external GIC")
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: added commit id]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
WARNING: vmlinux.o(.text+0xf47c): Section mismatch in reference from the function samsung_bl_set() to the (unknown reference) .init.data:(unknown)
The function samsung_bl_set() references
the (unknown reference) __initdata (unknown).
This is often because samsung_bl_set lacks a __initdata
annotation or the annotation of (unknown) is wrong.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
According to commit 659fb32d1b
("replace irq_gc_ack() with {set,clr}_bit variants"), this
should be fixed.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Since commit 8560a6cfc9
"arm: Footbridge: Use common i8253 clockevent",
ARCH_NETWINDER needs to select CLKEVT_I8253.
This patch fixes below build error with "make netwinder_defconfig".
LD .tmp_vmlinux1
arch/arm/mach-footbridge/built-in.o: In function `isa_timer_init':
isa-rtc.c:(.init.text+0x12c8): undefined reference to `clockevent_i8253_init'
isa-rtc.c:(.init.text+0x12d0): undefined reference to `i8253_clockevent'
arch/arm/mach-footbridge/built-in.o:(.data+0x198): undefined reference to `i8253_clockevent'
make: *** [.tmp_vmlinux1] Error 1
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
CC arch/sparc/kernel/pcic.o
arch/sparc/kernel/pcic.c: In function 'pcic_probe':
arch/sparc/kernel/pcic.c:359:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:359:8: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:360:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:360:8: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:361:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:361:8: error: array subscript is above array bounds [-Werror=array-bounds]
cc1: all warnings being treated as errors
I'm not particularly familiar with sparc but t_nmi (defined in head_32.S via
the TRAP_ENTRY macro) and pcic_nmi_trap_patch (defined in entry.S) both appear
to be 4 instructions long and I presume from the usage that instructions are
int sized.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In commit 9aa3283595 (ehea/ibm*: Move the
IBM drivers) the IBM_NEW_EMAC* were renames to IBM_EMAC*
The conversion was incomplete so that even if the driver was added to
the .config it wasn't built, but there were no errors). In this commit
we also update the various defconfigs that use EMAC to use the new
Kconfig symbol, and explicitly add the NET_VENDOR_IBM guard.
We do not explicitly select the Kconfig dependencies, as this would force
EMAC on. Doing it in the defconfig allows more flexibility.
Tested on a canyondlands board.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow the p1010 processor to select the flexcan network driver.
Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>,
Acked-by: Wolfgang Grandegger <wg@grandegger.com>,
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: socketcan-core@lists.berlios.de,
Cc: netdev@vger.kernel.org,
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch cleans up the documentation of the device-tree binding for
the Flexcan devices on Freescale's PowerPC and ARM cores. Extra
properties are not used by the driver so we are removing them.
Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>,
Acked-by: Wolfgang Grandegger <wg@grandegger.com>,
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: socketcan-core@lists.berlios.de,
Cc: netdev@vger.kernel.org,
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: David S. Miller <davem@davemloft.net>
The order-based approach is not only less efficient (requiring a shift
and a compare, typical generated code looking like this
mov eax, [machine_to_phys_order]
mov ecx, eax
shr ebx, cl
test ebx, ebx
jnz ...
whereas a direct check requires just a compare, like in
cmp ebx, [machine_to_phys_nr]
jae ...
), but also slightly dangerous in the 32-on-64 case - the element
address calculation can wrap if the next power of two boundary is
sufficiently far away from the actual upper limit of the table, and
hence can result in user space addresses being accessed (with it being
unknown what may actually be mapped there).
Additionally, the elimination of the mistaken use of fls() here (should
have been __fls()) fixes a latent issue on x86-64 that would trigger
if the code was run on a system with memory extending beyond the 44-bit
boundary.
CC: stable@kernel.org
Signed-off-by: Jan Beulich <jbeulich@novell.com>
[v1: Based on Jeremy's feedback]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Nothing should be using PCI/ISA IO on these platforms, so their
IO_SPACE_LIMIT definitions are irrelevent.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove IO_SPACE_LIMIT definitions from platforms which have a well
defined ISA or PCI, and has a 64K window.
EBSA110 - well defined set of ISA devices.
Footbridge, Integrator, IXP4xx, VT8500 - PCI platforms.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add a default IO_SPACE_LIMIT definition. Explain the chosen value and
suggest why platforms would want to make it larger.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As we've got rid of the bit-31 set IO addresses, we can now use the
standard inb() definitions and reduce the IO space limit to 64K.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove ioaddr() usage from ecard.c, updating (and renaming) the
constants in RiscPC's hardware.h to contain the proper translation.
As this gets rid of the last ioaddr() usage, kill that too.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
There is only one user of ioaddr() in the kernel, and that is the Acorn
expansion card core code. S3C2410 does not use this code, and so the
definition of ioaddr() is redundant.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Following fixes for:
1d12d35 oprofile, x86: Convert memory allocation to static array
Fix potential buffer overflow.
Fix the following warning:
arch/x86/oprofile/op_model_ppro.c: In function ‘ppro_check_ctrs’:
arch/x86/oprofile/op_model_ppro.c:143: warning: label ‘out’ defined but not used
Cc: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Robert Richter <robert.richter@amd.com>
CONFIG_TASKSTATS just had a change to use netlink, including
a change to "depends on NET". Since "select" does not follow
dependencies, KVM also needs to depend on NET to prevent build
errors when CONFIG_NET is not enabled.
Sample of the reported "undefined reference" build errors:
taskstats.c:(.text+0x8f686): undefined reference to `nla_put'
taskstats.c:(.text+0x8f721): undefined reference to `nla_reserve'
taskstats.c:(.text+0x8f8fb): undefined reference to `init_net'
taskstats.c:(.text+0x8f905): undefined reference to `netlink_unicast'
taskstats.c:(.text+0x8f934): undefined reference to `kfree_skb'
taskstats.c:(.text+0x8f9e9): undefined reference to `skb_clone'
taskstats.c:(.text+0x90060): undefined reference to `__alloc_skb'
taskstats.c:(.text+0x901e9): undefined reference to `skb_put'
taskstats.c:(.init.text+0x4665): undefined reference to `genl_register_family'
taskstats.c:(.init.text+0x4699): undefined reference to `genl_register_ops'
taskstats.c:(.init.text+0x4710): undefined reference to `genl_unregister_ops'
taskstats.c:(.init.text+0x471c): undefined reference to `genl_unregister_family'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
arch/x86/mm/fault.c needs to include asm/vsyscall.h to fix a
build error:
arch/x86/mm/fault.c: In function '__bad_area_nosemaphore':
arch/x86/mm/fault.c:728: error: 'VSYSCALL_START' undeclared (first use in this function)
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The sparc32 version of arch_write_unlock() is just a plain assignment.
Unfortunately this allows the compiler to schedule side-effects in a
protected region to occur after the HW-level unlock, which is broken.
E.g., the following trivial test case gets miscompiled:
#include <linux/spinlock.h>
rwlock_t lock;
int counter;
void foo(void) { write_lock(&lock); ++counter; write_unlock(&lock); }
Fixed by adding a compiler memory barrier to arch_write_unlock(). The
sparc64 version combines the barrier and assignment into a single asm(),
and implements the operation as a static inline, so that's what I did too.
Compile-tested with sparc32_defconfig + CONFIG_SMP=y.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
The sparc64 spinlock_64.h contains a number of operations defined
first as static inline functions, and then as macros with the same
names and parameters as the functions. Maybe this was needed at
some point in the past, but now nothing seems to depend on these
macros (checked with a recursive grep looking for ifdefs on these
names). Other archs don't define these identity-macros.
So this patch deletes these unnecessary macros.
Compile-tested with sparc64_defconfig.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is a workaround for the 364296 ARM1136 r0p2 erratum (possible
cache data corruption with hit-under-miss enabled). It sets the
undocumented bit 31 in the auxiliary control register and the FI bit in
the control register, thus disabling hit-under-miss without putting the
processor into full low interrupt latency mode.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch fixes L2 Cache size calculations for L2C-210, L2C-310 and
PL310, by changing the L2X0_AUX_CTRL_WAY_SIZE_MASK from 2 bits to 3
bits.
The Auxiliary Control Register for L2C-210, L2C-310 and PL310 has 3bits
[19:17] for Way size, however the existing code only uses 2 bits to
get this value. This results in incorrect cachesize calculations.
It also results in performing operations on the whole cache when we
erroneously decide that the range is big enough (due to l2x0_size being
too small) and also prints incorrect cachesize.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: stable@kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix the obvious error in board detection logic, because according to the TS's
manual, the model is stored in the least three significant bits. For example
the byte read on my ts-7300 is 0x23 and the detection then fails.
Cc: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On -rt kfree() can schedule, but CPU_STARTING is before the CPU is
fully up and running. These are contradictory, so avoid it. Instead
push the kfree() to CPU_ONLINE where we're free to schedule.
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-kwd4j6ayld5thrscvaxgjquv@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This code can be removed now that MSM targets no longer need the 16-bit
offsets for P2V.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
MSMs post 8x50 have 2Mb at the beginning of RAM reserved for
shared memory. Since the kernel hasn't typically been told this
RAM exists, PHYS_OFFSET has been set to 0xN0200000 and the memory
atags passed to the kernel have matched. This doesn't play nicely
with things such as AUTO_ZRELADDR, which doesn't work at all, and
dynamic phys to virt, which requires an MSM specific workaround.
Work around these issues by telling the kernel RAM starts at
0xN0000000 (it actually does) and fixup the atags from the
bootloader (if necessary) to say the same. In addition, make sure
to set TEXT_OFFSET at least 2Mb beyond the start of RAM so that
the kernel doesn't end up being decompressed into shared memory.
After doing this, AUTO_ZRELADDR should work on MSM with no
problems and ARM_PATCH_PHYS_VIRT_16BIT should no longer be
necessary.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch ensures that signal adapter commands are issued if they are
indicated to be required.
Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduces support for asynchronous delivery of storage blocks for
Hipersockets. Upper layers may exploit this functionality to reuse SBALs for
which the delivery status is still pending.
Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-tip:
x86-64: Rework vsyscall emulation and add vsyscall= parameter
x86-64: Wire up getcpu syscall
x86: Remove unnecessary compile flag tweaks for vsyscall code
x86-64: Add vsyscall:emulate_vsyscall trace event
x86-64: Add user_64bit_mode paravirt op
x86-64, xen: Enable the vvar mapping
x86-64: Work around gold bug 13023
x86-64: Move the "user" vsyscall segment out of the data segment.
x86-64: Pad vDSO to a page boundary
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (32 commits)
ARM: mmp: Change the way we use timer 0 as clockevent timer.
ARM: mmp: Switch to using timer 1 as clocksource timer.
ARM: mmp: Also start timer 1 on boot.
ARM: pxa168/gplugd: free correct GPIO
ARM: pxa168/gplugd: get rid of mfp-gplugd.h
ARM: pxa: fix logic error in PJ4 iWMMXt handling
mach-sa1100: fix PCI build problem
omap: timer: Set dmtimer used as clocksource in autoreload mode
OMAP3: am3517crane: remove NULL board_mux from board file
arm: mach-omap2: mux: use kstrdup()
arch:arm:plat-omap:iovmm: remove unused variable 'va'
Update Nook Color machine 3284 to common Encore name
am3505/3517: Various platform defines for UART4
OMAP: hwmod: fix build break on non-OMAP4 multi-OMAP2 builds
OMAP: Fix linking error in twl-common.c for OMAP2/3/4 only builds
iMX: Fix build for iMX53
ARM: mx5: board-cpuimx51.c fixup irq_to_gpio() usage
OMAP2+: PM: SmartReflex: use put_sync_suspend for IRQ-safe disabling
OMAP3: beagle: don't touch omap_device internals
OMAP1: enable GENERIC_IRQ_CHIP
...
The current cache detection code does not check for an aliasing
I-cache if the D-cache is found to be VIPT aliasing.
This patch fixes the problem by always checking for an aliasing
I-cache on v6 and later.
Signed-off-by: Will Deacon <will.deacon@arm.com>
The smp_twd clockevents driver currently enables the local timer PPI
before the clockevents device is registered. This can lead to a kernel
panic if a spurious timer interrupt is generated before registration
has completed since the kernel will treat it as an IPI timer.
This patch moves the clockevents device registration before the IRQ
unmasking so that we can always handle timer interrupts once they can
occur.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The various reset routines in mach-realview rely on an FPGA to
power-cycle the board after writing some magic runes to memory-mapped
registers.
This patch adds a dsb() following the writes, so that they become
visible before we mdelay(1000) in the arch_reset code. Without this
patch, the timeout would expire sporadically, causing the reset to fail.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Commit f12482c9 ("ARM: 6974/1: pmu: refactor reservation") changed
{release,reserve}_pmu to take an enum arm_pmu_type as a parameter, but
inconsistently named the parameter `type' or `device'. It would be nice
if these were consistent.
This patch makes use of enum arm_pmu_type consistent, always using
`type'. Related printks are updated, explicitly mentioning `type' also.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Commit f12482c9 ("ARM: 6974/1: pmu: refactor reservation") changed the
prototype of release_pmu, but missed the stub for when
CONFIG_CPU_HAS_PMU is not selected by the platform.
This patch changes the prototype of the stub, preventing possible build
failures when CONFIG_CPU_HAS_PMU is not selected.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Rather than marking the mach/gpio.h header files which want to use the
trivial GPIOLIB implementation, mark those which do not want to use it
instead. This means that by default, you get the trivial implementation
and only have to do something extra if you need to. This should
encourage the use of the trivial default implementation.
As an additional bonus, several gpio.h header files become empty.
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Many of the gpio_to_irq implementations use the gpiolib version of this
function. Provide the standard gpiolib gpio_to_irq() for everyone, but
allow platforms to override it if they wish. Add the neccessary
overrides for those platforms which do not use the standard definition.
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Consolidate 24 trivial gpiolib implementions out of mach/gpio.h
into asm/gpio.h. This is basically the include of asm-generic/gpio.h
and the definition of gpio_get_value, gpio_set_value, and gpio_cansleep
as described in Documentation/gpio.txt
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: David Brown <davidb@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf symbols: Check '/tmp/perf-' symbol file ownership
perf sched: Usage leftover from trace -> script rename
perf sched: Do not delete session object prematurely
perf tools: Check $HOME/.perfconfig ownership
perf, x86: Add model 45 SandyBridge support
perf tools: Add support to install perf python extension
perf tools: do not look at ./config for configuration
perf tools: Make clean leaves some files
perf lock: Dropping unsupported ':r' modifier
perf probe: Fix coredump introduced by probe module option
jump label: Reduce the cycle count by changing the link order
perf report: Use ui__warning in some more places
perf python: Add PERF_RECORD_{LOST,READ,SAMPLE} routine tables
perf evlist: Introduce 'disable' method
trace events: Update version number reference to new 3.x scheme for EVENT_POWER_TRACING_DEPRECATED
perf buildid-cache: Zero out buffer of filenames when adding/removing buildid
Enable virtual to physical translation patching by default in all
kernels. Hide the option behind EMBEDDED.
This can still be turned off if people desire, and they know what
they're doing, to shrink the size of the kernel to a minimum.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Instead of setting up a match interrupt for 'current_time + delta'
on ->set_next_event(), program timer 0 to count down from 'delta - 1'
and trigger an interrupt when it reaches zero.
Signed-off-by: Lennert Buytenhek <buytenh@laptop.org>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Currently, arch-mmp/time.c uses timer 0 both as a clocksource timer
and as a clockevent timer, the latter by setting up a comparator
interrupt to match on 'current_time + delta'. This is problematic
if delta is small enough, as that can lead to 'current_time + delta'
already being in the past when comparator setup has finished, leading
to the requested event not triggering.
As there is also a silicon issue that requires stopping a timer's
counter while writing to one of its match registers, we'll switch to
using two separate timers -- timer 0 as clockevent timer, which we'll
start and stop on every invocation of ->set_next_event(), and timer 1
as clocksource timer, which will be free-running.
This first patch enables timer 1 on boot, so that we can use it as
clocksource timer.
Signed-off-by: Lennert Buytenhek <buytenh@laptop.org>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Move definitions from mfp-gplugd.h to mfp-pxa168.h as they aren't
gplugD specific.
Signed-off-by: Tanmay Upadhyay <tanmay.upadhyay@einfochips.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: drop experimental status for ARM_PATCH_PHYS_VIRT
ARM: 7008/1: alignment: Make SIGBUS sent to userspace POSIXly correct
ARM: 7007/1: alignment: Prevent ignoring of faults with ARMv6 unaligned access model
ARM: 7010/1: mm: fix invalid loop for poison_init_mem
ARM: 7005/1: freshen up mm/proc-arm946.S
dmaengine: PL08x: Fix trivial build error
ARM: Fix build error for SMP=n builds
There are three choices:
vsyscall=native: Vsyscalls are native code that issues the
corresponding syscalls.
vsyscall=emulate (default): Vsyscalls are emulated by instruction
fault traps, tested in the bad_area path. The actual contents of
the vsyscall page is the same as the vsyscall=native case except
that it's marked NX. This way programs that make assumptions about
what the code in the page does will not be confused when they read
that code.
vsyscall=none: Trying to execute a vsyscall will segfault.
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/8449fb3abf89851fd6b2260972666a6f82542284.1312988155.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
getcpu is available as a vdso entry and an emulated vsyscall.
Programs that for some reason don't want to use the vdso should
still be able to call getcpu without relying on the slow emulated
vsyscall. It costs almost nothing to expose it as a real syscall.
We also need this for the following patch in vsyscall=native mode.
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/6b19f55bdb06a0c32c2fa6dba9b6f222e1fde999.1312988155.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
As of commit 98d0ac38ca
Author: Andy Lutomirski <luto@mit.edu>
Date: Thu Jul 14 06:47:22 2011 -0400
x86-64: Move vread_tsc and vread_hpet into the vDSO
user code no longer directly calls into code in arch/x86/kernel/, so
we don't need compile flag hacks to make it safe. All vdso code is
in the vdso directory now.
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/835cd05a4c7740544d09723d6ba48f4406f9826c.1312988155.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Really fix build without CONFIG_PCI
powerpc: Fix build without CONFIG_PCI
powerpc/4xx: Fix build of PCI code on 405
powerpc/pseries: Simplify vpa deregistration functions
powerpc/pseries: Cleanup VPA registration and deregistration errors
powerpc/pseries: Fix kexec on recent firmware versions
MAINTAINERS: change maintainership of mpc5xxx
powerpc: Make KVM_GUEST default to n
powerpc/kvm: Fix build errors with older toolchains
powerpc: Lack of ibm,io-events not that important!
powerpc: Move kdump default base address to half RMO size on 64bit
powerpc/perf: Disable pagefaults during callchain stack read
ppc: Remove duplicate definition of PV_POWER7
powerpc: pseries: Fix kexec on machines with more than 4TB of RAM
powerpc: Jump label misalignment causes oops at boot
powerpc: Clean up some panic messages in prom_init
powerpc: Fix device tree claim code
powerpc: Return the_cpu_ spec from identify_cpu
powerpc: mtspr/mtmsr should take an unsigned long
The PCI nanoengine driver in the SA1100 machine probably has not
been building for some time. It probably dragged hardware.h
in implicitly and now it doesn't anymore. After this an SA1100
build selecting all system variants will build successfully.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Brown paper bag day, previous commit wouldn't work very well with modules
enabled. Move the exports into the ifdef.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
If CONFIG_OMAP_32K_TIMER is not selected and dmtimer is used as clocksource, the
timer stops counting once overflow occurs as it was not set in autoreload mode.
This results into timekeeping failure: for example, 'sleep 1' at the shell after
the timer counter overflow would hang.
This patch sets up autoreload when starting the clocksource timer which fixes
the above issue.
Signed-off-by: Hemant Pedanekar <hemantp@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Since 7203f8a48b (arm: mach-omap2: remove
NULL board_mux from board files) NULL board_mux is defined in mux.h.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use kstrdup rather than duplicating its implementation
The semantic patch that makes this output is available
in scripts/coccinelle/api/kstrdup.cocci.
More information about semantic patching is available at
http://coccinelle.lip6.fr/
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The pointer "va" returned from "phys_to_virt(pa)" is never used in
"sgtable_fill_kmalloc()".So,it is safe to remove this set-but-unused variable.
Signed-off-by: Maxin B. John <maxin.john@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Add missing definitions for the AM3505/3517 UART4 such
as DMAs, INTs and base address.
Signed-of-by: Raphael Assenat <raph@8d.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This has now been well tested, and several platforms are now selecting
this directly. It's time to drop its experimental status.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Builds for multi-OMAP2 (e.g., OMAP2420 with OMAP2430) with
CONFIG_ARCH_OMAP4=n fail with the following errors:
arch/arm/mach-omap2/built-in.o: In function `_enable_module':
arch/arm/mach-omap2/omap_hwmod.c:701: undefined reference to `omap4_cminst_module_enable'
arch/arm/mach-omap2/built-in.o: In function `_disable_module':
arch/arm/mach-omap2/omap_hwmod.c:726: undefined reference to `omap4_cminst_module_disable'
arch/arm/mach-omap2/built-in.o: In function `_wait_target_disable':
arch/arm/mach-omap2/omap_hwmod.c:1179: undefined reference to `omap4_cminst_wait_module_idle'
This is probably due to the preprocessor directives in
arch/arm/plat-omap/include/plat/cpu.h that convert some cpu_is_omap*()
expressions from preprocessor directives into something that is only
resolvable during runtime, if multiple OMAP2 build targets are
selected.
Thanks to Tony Lindgren <tony@atomide.com> for reporting.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Commit b22f954 (OMAP4: Move common twl6030 configuration to twl-common)
caused compile failures for code for OMAP arch which is not selected by
the config.
Fixes issues like:
With CONFIG_ARCH_OMAP3=y and CONFIG_ARCH_OMAP4=n, I'm getting this:
arch/arm/mach-omap2/built-in.o:(.data+0xf99c): undefined reference to `omap4430_phy_init'
arch/arm/mach-omap2/built-in.o:(.data+0xf9a0): undefined reference to `omap4430_phy_exit'
arch/arm/mach-omap2/built-in.o:(.data+0xf9a4): undefined reference to `omap4430_phy_power'
arch/arm/mach-omap2/built-in.o:(.data+0xf9a8): undefined reference to `omap4430_phy_set_clk'
arch/arm/mach-omap2/built-in.o:(.data+0xf9ac): undefined reference to `omap4430_phy_suspend'
Fix the problem by moving the code to ifdef sections for omap3 and omap4.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
When the moduleu.h splitting tree is merged to the latest
tip:x86/cpu tree, the x86_64 allmodconfig build fails like this:
arch/x86/kernel/cpu/amd.c: In function 'bsp_init_amd':
arch/x86/kernel/cpu/amd.c:437:3: error: 'va_align' undeclared (first use in this function)
arch/x86/kernel/cpu/amd.c:438:23: error: 'ALIGN_VA_32' undeclared (first use in this function)
arch/x86/kernel/cpu/amd.c:438:37: error: 'ALIGN_VA_64' undeclared (first use in this function)
This is caused by the module.h split up intreacting with commit
dfb09f9b7a ("x86, amd: Avoid cache aliasing penalties on AMD
family 15h") from the tip:x86/cpu tree.
I have added the following patch for today (this, or something
similar, could be applied to the tip tree directly - the
export.h include below was added by the module.h splitup).
So include elf.h to use va_align and remove this implicit
dependency on module.h doing it for us.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Link: http://lkml.kernel.org/r/20110810114956.238d66772883636e3040d29f@canb.auug.org.au
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Link errors:
arch/ia64/kernel/built-in.o: In function `arch_setup_dmar_msi':
(.text+0x35972): undefined reference to `dmar_msi_write'
... and more ...
because allnoconfig has CONFIG_DMAR=y due to the "select DMAR"
in arch/ia64/Kconfig under config IA64_GENERIC.
Drop that select, but add CONFIG_DMAR=y to generic_defconfig so
we keep testbuilding the DMAR code.
Signed-off-by: Tony Luck <tony.luck@intel.com>
We don' use it anymore and there are more false positives.
This reverts commit fc25151d9a.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Add support to Romely-EP SandyBridge.
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Anhua Xu <anhua.xu@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1312264895-2010-1-git-send-email-youquan.song@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
With the UM_SIGNAL alignment fault mode, no siginfo structure is
passed to userspace.
POSIX specifies how siginfo_t should be populated for alignment
faults, so this patch does just that:
* si_signo = SIGBUS
* si_code = BUS_ADRALN
* si_addr = misaligned data address at which access was attempted
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Currently, it's possible to set the kernel to ignore alignment
faults when changing the alignment fault handling mode at runtime
via /proc/sys/alignment, even though this is undesirable on ARMv6
and above, where it can result in infinite spins where an un-fixed-
up instruction repeatedly faults.
In addition, the kernel clobbers any alignment mode specified on
the command-line if running on ARMv6 or above.
This patch factors out the necessary safety check into a couple of
new helper functions, and checks and modifies the fault handling
mode as appropriate on boot and on writes to /proc/cpu/alignment.
Prior to ARMv6, the behaviour is unchanged.
For ARMv6 and above, the behaviour changes as follows:
* Attempting to ignore faults on ARMv6 results in the mode being
forced to UM_FIXUP instead. A warning is printed if this
happened as a result of a write to /proc/cpu/alignment. The
user's UM_WARN bit (if present) is still honoured.
* An alignment= argument from the kernel command-line is now
honoured, except that the kernel will modify the specified mode
as described above. This is allows modes such as UM_SIGNAL and
UM_WARN to be active immediately from boot, which is useful for
debugging purposes.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
poison_init_mem() used a loop of:
while ((count = count - 4))
which has 2 problems - an off by one error so that we do one less word
than we should, and the other is that if count == 0 then we loop forever
and poison too much. On a platform with HAVE_TCM=y but nothing in the
TCM's, this caused corruption and the platform failed to boot.
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The file mm/proc-arm946.S contains a typo and is missing a structure
member in __arm946_proc_info. The former prevents compilation
and the latter causes problems during boot. It is likely this
file was manually copied from a similar file and not tested, then
later updates to the *_proc_info structures missed this file.
This patch will apply (with offset) with or without the
recent macro unification work that has been done in this directory.
This was verified against linux-next/stable last week.
See arm-linux-kernel thread:
http://lists.arm.linux.org.uk/lurker/message/20110718.103237.0106d468.en.html
Signed-off-by: Brian S. Julin <bri@abrij.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch add support for the bcma bus. Broadcom uses only Mips 74K
CPUs on the new SoC and on the old ons using ssb bus there are no Mips
74K CPUs.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Prepare bcm47xx to support different System buses. Before adding
support for bcma it should be possible to build bcm47xx without the
need of ssb. With this patch bcm47xx does not directly contain a
ssb_bus, but a union contain all the supported system buses. As a SoC
just uses one system bus a union is a good choice.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Convert arch/arm includes of mach/gpio.h and asm/gpio.h to linux/gpio.h
before we start consolidating the individual platform implementations
of the gpio header files.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch use channel0 as Tx, and channel1 as Rx
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This corrects a logic-error that I made in the original implementation.
An alternate patch would be to just remove these lines and
leave the clock running as it is reconfigured later on during
boot anyway.
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Commit fad107086d fixed the wrong test for MX51
as the MX51 addresses are wrong for MX50 and MX53 but now it's MX51 only,
UART_PADDR is not defined anymore when building for MX50/MX53.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Tested-by: Steev Klimaszewski <steev@genesi-usa.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
irq_to_gpio() is being called on a GPIO so change to using
gpio_to_irq() instead.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
For marketing reasons the part will be called WM8996. In order to avoid
user confusion rename the driver to reflect this.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Liam Girdwood <lrg@ti.com>
The generic library code already exports the generic function, this was
left-over from the ARM-specific version that just got removed.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since commit 1eb19a12bd ("lib/sha1: use the git implementation of
SHA-1"), the ARM SHA1 routines no longer work. The reason? They
depended on the larger 320-byte workspace, and now the sha1 workspace is
just 16 words (64 bytes). So the assembly version would overwrite the
stack randomly.
The optimized asm version is also probably slower than the new improved
C version, so there's no reason to keep it around. At least that was
the case in git, where what appears to be the same assembly language
version was removed two years ago because the optimized C BLK_SHA1 code
was faster.
Reported-and-tested-by: Joachim Eastwood <manabian@gmail.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/trace: Fix compile error when CONFIG_XEN_PRIVILEGED_GUEST is not set
xen: Fix misleading WARN message at xen_release_chunk
xen: Fix printk() format in xen/setup.c
xen/tracing: it looks like we wanted CONFIG_FTRACE
xen/self-balloon: Add dependency on tmem.
xen/balloon: Fix compile errors - missing header files.
xen/grant: Fix compile warning.
xen/pciback: remove duplicated #include
hpa reported that dfb09f9b7a breaks 32-bit
builds with the following error message:
/home/hpa/kernel/linux-tip.cpu/arch/x86/kernel/cpu/amd.c:437: undefined
reference to `va_align'
/home/hpa/kernel/linux-tip.cpu/arch/x86/kernel/cpu/amd.c:436: undefined
reference to `va_align'
This is due to the fact that va_align is a global in a 64-bit only
compilation unit. Move it to mmap.c where it is visible to both
subarches.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/1312633899-1131-1-git-send-email-bp@amd64.org
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Delete the 10 msec delay between the INIT and SIPI when starting
slave cpus. I can find no requirement for this delay. BIOS also
has similar code sequences without the delay.
Removing the delay reduces boot time by 40 sec. Every bit helps.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/20110805140900.GA6774@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
When executing EC commands, only waiting when there are still
more bytes to write is usually fine. However, if the system
suspends very quickly after a call to olpc_ec_cmd(), the last
data byte may not yet be transferred to the EC, and the command
will not complete.
This solves a bug where the SCI wakeup mask was not correctly
written when going into suspend.
It means that sometimes, on XO-1.5 (but not XO-1), the
devices that were marked as wakeup sources can't wake up
the system. e.g. you ask for wifi wakeups, suspend, but then
incoming wifi frames don't wake up the system as they should.
Signed-off-by: Paul Fox <pgf@laptop.org>
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Andres Salomon <dilinger@queued.net>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Move code which is run once on the BSP during boot into the cpu_dev
helper.
[ hpa: removed bogus cpu_has -> static_cpu_has conversion ]
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/20110805180409.GC26217@aftab
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Add a function ptr to struct cpu_dev which is destined to be run only
once on the BSP during boot.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/20110805180116.GB26217@aftab
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This patch provides performance tuning for the "Bulldozer" CPU. With its
shared instruction cache there is a chance of generating an excessive
number of cache cross-invalidates when running specific workloads on the
cores of a compute module.
This excessive amount of cross-invalidations can be observed if cache
lines backed by shared physical memory alias in bits [14:12] of their
virtual addresses, as those bits are used for the index generation.
This patch addresses the issue by clearing all the bits in the [14:12]
slice of the file mapping's virtual address at generation time, thus
forcing those bits the same for all mappings of a single shared library
across processes and, in doing so, avoids instruction cache aliases.
It also adds the command line option "align_va_addr=(32|64|on|off)" with
which virtual address alignment can be enabled for 32-bit or 64-bit x86
individually, or both, or be completely disabled.
This change leaves virtual region address allocation on other families
and/or vendors unaffected.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/1312550110-24160-2-git-send-email-bp@amd64.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
omap_sr_disable_reset_volt is called with irqs off in omapx_enter_sleep,
as part of idle sequence, this eventually calls sr_disable and
pm_runtime_put_sync. pm_runtime_put_sync calls rpm_idle, which will
enable interrupts in order to call the callback. In this short interval
when interrupts are enabled, scenarios such as the following can occur:
while interrupts are enabled, the timer interrupt that is supposed to
wake the device out of idle occurs and is acked, so when the CPU finally
goes to off, the timer is already gone, missing a wakeup event.
Further, as the documentation for runtime states:"
However, subsystems can use the pm_runtime_irq_safe() helper function
to tell the PM core that a device's ->runtime_suspend() and ->runtime_resume()
callbacks should be invoked in atomic context with interrupts disabled
(->runtime_idle() is still invoked the default way)."
Hence, replace pm_runtime_put_sync with pm_runtime_put_sync_suspend
to invoke the suspend handler and shut off the fclk for SmartReflex
module instead of using the idle handler in interrupt disabled context.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Colin Cross <ccross@google.com>
[khilman@ti.com: minor Subject edits]
Signed-off-by: Kevin Hilman <khilman@ti.com>
Board code should not touch omap_device internals. To get the MPU/IVA devices,
use existing APIs: omap2_get_mpu_device(), omap2_get_iva_device().
Signed-off-by: Kevin Hilman <khilman@ti.com>
OMAP1 needs this also since GPIO driver (common for all OMAPs) is
being converted to use generic IRQ chip.
Signed-off-by: Kevin Hilman <khilman@ti.com>
SmartReflex should be disabled while entering low power mode due to
a) SmartReflex values are not defined for retention voltage, further
b) with SmartReflex enabled, if CPU enters lower c-states, FSM will try
to bump the voltage to current OPP's voltage for which it has entered c-state;
hence SmartReflex needs to be disabled for MPU, CORE and IVA voltage
domains in idle path before enabling auto retention voltage achievement
on the device.
However, since the current pm_runtime setup for SmartReflex devices are
setup to allow callbacks to be invoked with interrupts enabled, calling
SmartReflex enable/disable from other contexts such as idle paths
where preemption is disabled causes warnings such as the following
indicating of a potential race.
[ 82.023895] [<c04d079c>] (__irq_svc+0x3c/0x120) from [<c04d0484>] (_raw_spin_unlock_irq+0x28/0x2c)
[ 82.023895] [<c04d0484>] (_raw_spin_unlock_irq+0x28/0x2c) from [<c0323234>] (rpm_callback+0x4c/0x68)
[ 82.023956] [<c0323234>] (rpm_callback+0x4c/0x68) from [<c0323f7c>] (rpm_resume+0x338/0x53c)
[ 82.023956] [<c0323f7c>] (rpm_resume+0x338/0x53c) from [<c03243f4>] (__pm_runtime_resume+0x48/0x60)
[ 82.023986] [<c03243f4>] (__pm_runtime_resume+0x48/0x60) from [<c008aee0>] (sr_enable+0xa8/0x19c)
[ 82.023986] [<c008aee0>] (sr_enable+0xa8/0x19c) from [<c008b2fc>] (omap_sr_enable+0x50/0x90)
[ 82.024017] [<c008b2fc>] (omap_sr_enable+0x50/0x90) from [<c00888c0>] (omap4_enter_sleep+0x138/0x168)
Instead, we use pm_runtime_irq_safe to tell the PM core that callbacks can be
invoked in interrupt disabled contexts.
Acked-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
[khilman@ti.com: minor changelog edits]
Signed-off-by: Kevin Hilman <khilman@ti.com>
CONFIG_PM is no longer a user-selectable Kconfig option. Rather it is
automatically enabled if either CONFIG_SUSPEND or CONFIG_RUNTIME_PM is
enabled, so having a 'select PM' here is redunant when 'select
CONFIG_PM_RUNTIME' is present.
Signed-off-by: Kevin Hilman <khilman@ti.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: Size mondo queues more sanely.
sparc: Access kernel TSB using physical addressing when possible.
sparc: Fix __atomic_add_unless() return value.
sparc: use kbuild-generic support for true asm-generic header files
sparc: Use popc when possible for ffs/__ffs/ffz.
sparc: Set reboot-cmd using reboot data hypervisor call if available.
sparc: Add some missing hypervisor API groups.
sparc: Use hweight64() in popc emulation.
sparc: Use popc if possible for hweight routines.
sparc: Minor tweaks to Niagara page copy/clear.
sparc: Sanitize cpu feature detection and reporting.
If the DPLL is already enabled, don't try to enable it again.
Since write to the DPLL control register will make the DPLL
reset and which will cause some issues when some child module
are sourced from this DPLL.
Signed-off-by: Jason Liu <jason.hui@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
with CONFIG_XEN and CONFIG_FTRACE set we get this:
arch/x86/xen/trace.c:22: error: ‘__HYPERVISOR_console_io’ undeclared here (not in a function)
arch/x86/xen/trace.c:22: error: array index in initializer not of integer type
arch/x86/xen/trace.c:22: error: (near initialization for ‘xen_hypercall_names’)
arch/x86/xen/trace.c:23: error: ‘__HYPERVISOR_physdev_op_compat’ undeclared here (not in a function)
Issue was that the definitions of __HYPERVISOR were not pulled
if CONFIG_XEN_PRIVILEGED_GUEST was not set.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
There is currently no upper limit on the mondo queue sizes we'll use,
which guarentees that we'll eventually his page allocation limits, and
thus allocation failures, due to MAX_ORDER.
Cap the sizes sanely, current limits are:
CPU MONDO 2 * max_possible_cpus
DEV MONDO 256 (basically NR_IRQS)
RES MONDO 128
NRES MONDO 4
Signed-off-by: David S. Miller <davem@davemloft.net>
On sun4v this is basically required since we point the hypervisor and
the TSB walking hardware at these tables using physical addressing
too.
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit fea80311a9
"iomap: make IOPORT/PCI mapping functions conditional"
Broke powerpc build without CONFIG_PCI as we would still define
pci_iomap(), which overlaps with the new empty inline in the headers.
Make our implementation conditional on CONFIG_PCI
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Commit 112d1fe9f7
"powerpc/4xx: Add check_link to struct ppc4xx_pciex_hwops" inadvertently
broke 405 builds due to some functions being over protected by an
ifdef CONFIG_44x.
Move them back out.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The VPA, SLB shadow and DTL degistration functions do not need an
address, so simplify things and remove it.
Also cleanup pseries_kexec_cpu_down a bit by storing the cpu IDs
in local variables.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Make the VPA, SLB shadow and DTL registration and deregistration
functions print consistent messages on error. I needed the firmware
error code while chasing a kexec bug but we weren't printing it.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Recent versions of firmware will fail to unmap the virtual processor
area if we have a dispatch trace log registered. This causes kexec
to fail.
If a trace log is registered this patch unregisters it before the
SLB shadow and virtual processor areas, fixing the problem.
The address argument is ignored by firmware on unregister so we
may as well remove it.
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
