There were three different errors resulting in a "dangerous relocation"
message. Add the relocation type to the messgages to make them more
useful.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
In mm/slab.c the function do_ccupdate_local requires that interrupts be
disabled. If they are not, we panic with CONFIG_DEBUG_SLAB.
So we disable interrupts while processing IPIs. Also these are not shared
irqs, so get rid of the IRQF_SHARED flag.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Check whether index is within bounds before testing the element.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression x,__divisor;
@@
- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch fixes the following warning at boot time:
WARNING: at drivers/gpio/gpiolib.c:83 0x8021d5e0()
autorequest GPIO-207
Modules linked in:
Call Trace:[<8011e0ec>] 0x8011e0ec
[<80110a28>] 0x80110a28
[<80110a28>] 0x80110a28
[..snip..]
The current code does not request the GPIO and attempts
to set its direction, which is a violation of the GPIO API.
This patch also unhardcode the GPIO we request and use
the one we defined in the button driver.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Now that we have removed all warnings from the ar7 board code we can use
-Werror like on other MIPS boards.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch fixes the following build failure when CONFIG_SERIAL_8250
is not enabled in the kernel configuration:
arch/mips/ar7/built-in.o: In function 'ar7_register_devices':
platform.c:(.init.text+0x61c): undefined reference to 'early_serial_setup'
platform.c:(.init.text+0x61c): relocation truncated to fit: R_MIPS_26 against 'early_serial_setup'
platform.c:(.init.text+0x68c): undefined reference to 'early_serial_setup'
platform.c:(.init.text+0x68c): relocation truncated to fit: R_MIPS_26 against 'early_serial_setup'
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch fixes the following build warning:
arch/mips/ar7/memory.c: In function 'memsize':
arch/mips/ar7/memory.c:55: warning: passing argument 1 of 'writel' makes integer from pointer without a cast
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Some SiliconImage PCIe SATA controlers are not detected when the bus
numbers differ.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The current interrupt handling code for the MSP4200 always masks an
interrupt before acknowledging it. This is not required, as that will be
handled by the level interrupt handler. This change simplifies the MSP4200
code to remove the masking in the ack routine, and makes sure that the
minimum required operation is performed for masking and acking, rather
than always both masking and acking the interrupt.
Signed-off-by: Shane McDonald <mcdonald.shane@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Trying to build a PMC-Sierra MSP4200 VoIP gateway defconfig will not work
since MIPS34K_MISSED_ITLB_WAR is not defined for all boards supported
within pmc-serria/msp71xx. This patch defines MIPS34K_MISSED_ITLB_WAR to
prevent such build failures:
CHK include/linux/version.h
CHK include/linux/utsrelease.h
SYMLINK include/asm -> include/asm-mips
CC arch/mips/kernel/asm-offsets.s
In file included fromlinux-msp71xx/linux-2.6.29/arch/mips/include/asm/bitops.h:24,
from include/linux/bitops.h:17,
from include/linux/kernel.h:15,
from include/linux/sched.h:52,
from arch/mips/kernel/asm-offsets.c:13:
linux-msp71xx/linux-2.6.29/arch/mips/include/asm/war.h:241:2: error: #error Check setting of MIPS34K_MISSED_ITLB_WAR for your
platform
This fixes a compile error when building for the MSP4200 boards. Identical
patches to fix this were send by
Florian Fainelli <florian@openwrt.org>
Shane McDonald <mcdonald.shane@gmail.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Trying to build MSP4200 VoIP defconfig also fails on msp_irq_slp.c with a
non-existing reference to mask_slp_irq, which is in turn mask_msp_slp_irq.
Passed that, we will also miss a comma when calling
set_irq_chip_and_handler. This patch fixes both issues.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Shane McDonald <mcdonald.shane@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Loading of modules with unresolved weak symbols fails on MIPS
since '88173507e4fc1e7ecd111b0565e8cba0cb7dae6d'.
Modules: handle symbols that have a zero value
The module subsystem cannot handle symbols that are zero. If symbols
are present that have a zero value then the module resolver prints out a
message that these symbols are unresolved.
We have to use IS_ERR_VALUE() to check that a symbol has been resolved
or not.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Commit fc03bc1715ca0ad4ccfe97aab16bcc9e7129c1a4 breaks when SMTC support
is enabled on Malta.
Signed-off-by: Raghu Gandham <raghu@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The resume() implementation octeon_switch.S examines the saved cp0_status
register. We were clobbering the entire pt_regs structure in kernel
threads leading to random crashes.
When switching away from a kernel thread, the saved cp0_status is examined
and if bit 30 is set it is cleared and the CP2 state saved into the pt_regs
structure. Since the kernel thread stack overlaid the pt_regs structure
this resulted in a corrupt stack. When the kthread with the corrupt stack
was resumed, it could crash if it used any of the data in the stack that was
clobbered.
We fix it by moving the kernel thread stack down so it doesn't overlay
pt_regs.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
cc1: warnings being treated as errors
arch/mips/mipssim/sim_time.c: In function 'get_c0_compare_int':
arch/mips/mipssim/sim_time.c:103: warning: ISO C90 forbids mixed declarations and code
arch/mips/mipssim/sim_time.c:116: error: expected declaration or statement at end of input
make[1]: *** [arch/mips/mipssim/sim_time.o] Error 1
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Fix the pagefault oom path which does not drop mm->mmap_sem.
This was introduced by commit c7c1e3846b
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
They tend to get not updated when files are moved around or copied and
lack any obvious use. While at it zap some only too obvious comments and
as per Shinya's suggestion, add a copyright header to extable.c.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Changeset 3869c4aa18
that went in after 2.6.30-rc1 was a seemingly small change to _set_memory_wc()
to make it complaint with SDM requirements. But, introduced a nasty bug, which
can result in crash and/or strange corruptions when set_memory_wc is used.
One such crash reported here
http://lkml.org/lkml/2009/7/30/94
Actually, that changeset introduced two bugs.
* change_page_attr_set() takes &addr as first argument and can the addr value
might have changed on return, even for single page change_page_attr_set()
call. That will make the second change_page_attr_set() in this routine
operate on unrelated addr, that can eventually cause strange corruptions
and bad page state crash.
* The second change_page_attr_set() call, before setting _PAGE_CACHE_WC, should
clear the earlier _PAGE_CACHE_UC_MINUS, as otherwise cache attribute will not
be WC (will be UC instead).
The patch below fixes both these problems. Sending a single patch to fix both
the problems, as the change is to the same line of code. The change to have a
addr_copy is not very clean. But, it is simpler than making more changes
through various routines in pageattr.c.
A huge thanks to Jerome for reporting this problem and providing a simple test
case that helped us root cause the problem.
Reported-by: Jerome Glisse <glisse@freedesktop.org>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <20090730214319.GA1889@linux-os.sc.intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
dmaengine: at_hdmac: add DMA slave transfers
dmaengine: at_hdmac: new driver for the Atmel AHB DMA Controller
dmaengine: dmatest: correct thread_count while using multiple thread per channel
dmaengine: dmatest: add a maximum number of test iterations
drivers/dma: Remove unnecessary semicolons
drivers/dma/fsldma.c: Remove unnecessary semicolons
dmaengine: move HIGHMEM64G restriction to ASYNC_TX_DMA
fsldma: do not clear bandwidth control bits on the 83xx controller
fsldma: enable external start for the 83xx controller
fsldma: use PCI Read Multiple command
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Update defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx
powerpc/86xx: Update GE Fanuc sbc310 default configuration
powerpc/86xx: Update defconfig for GE Fanuc's PPC9A
cpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c
powerpc/83xx: Fix PCI IO base address on MPC837xE-RDB boards
powerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards
powerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards
powerpc/mm: Fix SMP issue with MMU context handling code
The pwm hardware only checks the compare register after a decrement,
so the pin never toggles if tcmp = tcnt.
This happens when a very low duty cycle is requested. Fix it by always
ensuring that tcmp < tcnt.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Make software reset to avoid freeze if PCI bus was messed up
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
After ftrace_trace_function is called r1 is probably clobbered so don't
try to use its value for restoring.
This was introduced in v2.6.29~38^2~7
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Every so often, after code shuffles, I need to go through and unbitrot
the Lguest Journey (see drivers/lguest/README). Since we now use RCU in
a simple form in one place I took the opportunity to expand that explanation.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
I don't really notice it (except to begrudge the extra vertical
space), but Ingo does. And he pointed out that one excuse of lguest
is as a teaching tool, it should set a good example.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
General update of defconfig including the following notable changes:
- Enable Highmem support.
- Support for PCMCIA based daughter card.
Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
General update of defconfig including the following notable changes:
- Enable GPIO access via sysfs on GE Fanuc's PPC9A.
- Enable Highmem support.
- Support for PCMCIA based daughter card.
Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
U-Boot maps PCI IO at 0xe0300000, while current dts files specify
0xe2000000. This leads to the following oops with CONFIG_8139TOO_PIO=y.
8139too Fast Ethernet driver 0.9.28
Machine check in kernel mode.
Caused by (from SRR1=41000): Transfer error ack signal
Oops: Machine check, sig: 7 [#1]
MPC837x RDB
[...]
NIP [00000900] 0x900
LR [c0439df8] rtl8139_init_board+0x238/0x524
Call Trace:
[cf831d90] [c0439dcc] rtl8139_init_board+0x20c/0x524 (unreliable)
[cf831de0] [c043a15c] rtl8139_init_one+0x78/0x65c
[cf831e40] [c0235250] pci_call_probe+0x20/0x30
[...]
This patch fixes the issue by specifying the correct PCI IO base
address.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Sometimes (e.g. when there are no UEMs attached to a board)
fsl_pq_mdio_find_free() fails to find a spare address for a TBI PHY,
this is because get_phy_id() returns bogus 0x0000ffff values
(0xffffffff is expected), and therefore mdio bus probing fails with
the following message:
fsl-pq_mdio: probe of e0082120.mdio failed with error -16
And obviously ethernet doesn't work after this.
This patch solves the problem by adding tbi-phy node into mdio node,
so that we won't scan for spare addresses, we'll just use a fixed one.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Linux isn't able to detect link changes on ethernet ports that were
used by U-Boot. This is because U-Boot wrongly clears interrupt
polarity bit (INTPOL, 0x400) in the extended status register (EXT_SR,
0x1b) of Marvell PHYs.
There is no easy way for PHY drivers to know IRQ line polarity (we
could extract it from the device tree and pass it to phydevs, but
that'll be quite a lot of work), so for now just reset the PHYs to
their default states.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
In switch_mmu_context() if we call steal_context_smp() to get a context
to use we shouldn't fall through and than call steal_context_up(). Doing
so can be problematic in that the 'mm' that steal_context_up() ends up
using will not get marked dirty in the stale_map[] for other CPUs that
might have used that mm. Thus we could end up with stale TLB entries in
the other CPUs that can cause all kinda of havoc.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The value of armclk_mask needs to be inverted for use as a mask on
the register value when updating ARM_RATIO.
This is critical for cpufreq support, without it attempts to scale
the frequency of the core trash pretty much the entire clock tree.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
If the requested clock is faster than the parent clock then the
parent clock is the closest we can get to the request so we need
to return that instead of the requested clock.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
In the s3c_gpiolib_getchip implementation for s3c24xx the check whether a pin is
in the gpio banks range is reversed. Thus the function returns NULL for valid
pins and the gpio chip if its not valid.
As a result gpio states are not saved/restored properly during suspend/resume.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
* 'drm-radeon-kms' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (35 commits)
drm/radeon: set fb aperture sizes for framebuffer handoff.
drm/ttm: fix highuser vs dma32 confusion.
drm/radeon: Fix size used for benchmarking BO copies.
drm/radeon: Add radeon.test parameter for running BO GPU copy tests.
drm/radeon/kms: allow interruptible waits for objects.
drm/ttm: powerpc: Fix Highmem cache flushing.
x86: Export kmap_atomic_prot() needed for TTM.
drm/ttm: Fix ttm in-kernel copying of pages with non-standard caching attributes.
drm/ttm: Fix an oops and sync object leak.
drm/radeon/kms: vram sizing on certain r100 chips needs workaround.
drm/radeon: Pay more attention to object placement requested by userspace.
drm/radeon: Fall back to evicting BOs with memcpy if necessary.
drm/radeon: Don't unreserve twice on failure to validate.
drm/radeon/kms: fix bandwidth computation on avivo hardware
drm/radeon/kms: add initial colortiling support.
drm/radeon/kms: fix hotspot handling on pre-avivo chips
drm/radeon/kms: enable frac fb divs on rs600/rs690/rs740
drm/radeon/kms: add PLL flag to prefer frequencies <= the target freq
drm/radeon/kms: block RN50 from using 3D engine.
drm/radeon/kms: fix VRAM sizing like DDX does it.
...
This functionality is needed to kmap_atomic() highmem pages that may
potentially have or are about to set up other mappings with
non-standard caching attributes.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
- enable PCM043, MX31LILLY, ARMADILLO5X0 and MX35_3DS boards
- enable MXC nand driver
- enable UBI support
- disable cs89x0 support which broke all boards which do not have this chip
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Those definitions are already provided by asm-generic
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Startup code for i386 in arch/x86/kernel/head_32.S is using the
reference variable initial_code that is located in the .cpuinit.data
section. If CONFIG_HOTPLUG_CPU is enabled, startup code is not in an
init section and can be called later too. In this case the reference
initial_code must be kept too. This patch fixes this. See below for
the section mismatch warning.
WARNING: vmlinux.o(.cpuinit.data+0x0): Section mismatch in reference
from the variable initial_code to the function
.init.text:i386_start_kernel()
The variable __cpuinitdata initial_code references
a function __init i386_start_kernel().
If i386_start_kernel is only used by initial_code then
annotate i386_start_kernel with a matching annotation.
Signed-off-by: Robert Richter <robert.richter@amd.com>
LKML-Reference: <1248716632-26844-1-git-send-email-robert.richter@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Makefile cleanup
microblaze: Typo fix for cpu param inconsistency
microblaze: Add support for R_MICROBLAZE_64_NONE
microblaze: Get module loading working
microblaze: remove sys_ipc
microblaze: Support unaligned address for put/get_user macros
microblaze: Detect new Microblaze 7.20 versions
microblaze: Fix do_page_fault for no context
microblaze: Add _PAGE_FILE macros to pgtable.h
microblaze: Fix put_user macro for 64bits arguments
microblaze: Clear print messages for DTB passing via r7
microblaze: Not to clear r7 after copying DTB to kernel
microblaze: Add messages about FDT blob
microblaze: Final support for statically linked DTB
microblaze: remove duplicated #include
microblaze: Define tlb_flush macro
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: geode: Mark mfgpt irq IRQF_TIMER to prevent resume failure
x86, amd: Don't probe for extended APIC ID if APICs are disabled
x86, mce: Rename incorrect macro name "CONFIG_X86_THRESHOLD"
x86-64: Fix bad_srat() to clear all state
x86, mce: Fix set_trigger() accessor
x86: Fix movq immediate operand constraints in uaccess.h
x86: Fix movq immediate operand constraints in uaccess_64.h
x86: Add reboot fixup for SBC-fitPC2
x86: Include all of .data.* sections in _edata on 64-bit
x86: Add quirk for Intel DG45ID board to avoid low memory corruption
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] zcrypt: fix scheduling of hrtimer ap_poll_timer
[S390] vdso: clock_gettime of CLOCK_THREAD_CPUTIME_ID with noexec=on
[S390] vdso: fix per cpu area allocation
[S390] hibernation: fix register corruption on machine checks
[S390] hibernation: fix lowcore handling
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
Upcoming paches to support the new 64-bit "BookE" powerpc architecture
will need to have the virtual address corresponding to PTE page when
freeing it, due to the way the HW table walker works.
Basically, the TLB can be loaded with "large" pages that cover the whole
virtual space (well, sort-of, half of it actually) represented by a PTE
page, and which contain an "indirect" bit indicating that this TLB entry
RPN points to an array of PTEs from which the TLB can then create direct
entries. Thus, in order to invalidate those when PTE pages are deleted,
we need the virtual address to pass to tlbilx or tlbivax instructions.
The old trick of sticking it somewhere in the PTE page struct page sucks
too much, the address is almost readily available in all call sites and
almost everybody implemets these as macros, so we may as well add the
argument everywhere. I added it to the pmd and pud variants for consistency.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV]
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
correct GPIO freed in treo680_irda_shutdown()
Signed-off-by: Tomáš ?ech <sleep_walker@suse.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed the Makefile on request by Michal and this is the resulting changes.
o Use ':=' for assignmnet so we do not re-evaluate for each use
o Use $(shell echo xxx) to remove ""
o Replaced CFLAGS_KERNEL with KBUILD_CFLAGS
The settings are equally relevant for modules and the linked kernel
o Dropped LDFLAGS_BLOB - it is no longer used
o Refactored assignmnets to libs-y and core-y
o Use MMU for the MMU specific extension. "MMUEXT" was hurting my eyes
and I did not wanted it spread to m68k
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Simek <monstr@monstr.eu>
New reloc type R_MICROBLAZE_32_PCREL_LO requires a null handler (no work to do).
Remove legacy hack for broken linker pre gcc-4.1.1, that required us to extract
an offset from the code, add it to the addend, then rewrite the instruction.
Fixup the invalid reloc type error output.
Boot tested with the xilinx_emaclite ethernet driver.
Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
The ipc system call is now unused in microblaze,
as the system call table points directly to the
indidual system calls for IPC.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
This patch add support for cases where load/store instruction
in put/get_user macro gets unaligned pointer to data and this
address is not valid. I prevent all cases which can failed.
I had to disable first stage of unaligned handler which is used
only for noMMU kernel and the whole work is done when interrupt
is enabled.
You have enable HW support for detect unaligned access in Microblaze.
This patch fixed three LTP tests:
getpeername01, getsockname01, socketpair01
Signed-off-by: Michal Simek <monstr@monstr.eu>
Calling fixup when we are in kernel mode. This
prevent fault for copy_to/from_user. This fault
was find thanks to writev01/03/04 LTP tests.
Signed-off-by: Michal Simek <monstr@monstr.eu>
We need to define _PAGE_FILE macro and change pte
functions. Microblaze use the same MMU as PowerPC
that's why we define _PAGE_FILE in the same style.
This change fixed remap_file_pages01 LTP test.
Signed-off-by: Michal Simek <monstr@monstr.eu>
For 64bits arguments gcc caused that put_user macro
works with wrong value because of optimalization.
Adding volatile caused that gcc not optimized it.
It is possible to use (as Blackfin do) two put_user
macros with 32bits arguments but there is one more
instruction which is due to duplication zero return
value which is called put_user_asm macro.
Signed-off-by: Michal Simek <monstr@monstr.eu>
It is necessary to zeroed r7 when r7 points to bad
dtb - this caused that we have correct messages
about compiled-in dtb or passing via r7
Signed-off-by: Michal Simek <monstr@monstr.eu>
If r7 is zero at kernel boot, or does not point to a valid DTB, then
we fall back to a DTB (assumed to be) linked statically in the kernel, instead
of blindly copying bogus cruft into the kernel DTB memory region
Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
This fix remove bug which we had till now in all
Microblaze MMU code. Primary tested on mmap01 LTP test.
We forget to flush invalid tlb which were changed - we
used them and there were wrong old data which wasn't correct.
Signed-off-by: Michal Simek <monstr@monstr.eu>
fix the following 'make includecheck' warning:
arch/arm/plat-stmp3xxx/pinmux.c: linux/sysdev.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: dmitry pervushin <dpervushin@embeddedalley.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/plat-s3c64xx/pm.c: plat/regs-gpio.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/mach-omap2/mcbsp.c: mach/irqs.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/mach-omap1/mcbsp.c: mach/irqs.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/mach-davinci/board-sffsdr.c: mach/common.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Philip Balister <philip@opensdr.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/mach-davinci/board-dm646x-evm.c: mach/common.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/mach-davinci/board-dm644x-evm.c: mach/common.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/mach-davinci/board-dm355-leopard.c: mach/common.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/mach-davinci/board-dm355-evm.c: mach/common.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/include/asm/atomic.h: asm/system.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix the following 'make includecheck' warning:
arch/arm/boot/compressed/misc.c: linux/compiler.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The combination of noexec=on and a clock_gettime call with clock id
CLOCK_THREAD_CPUTIME_ID is broken. The vdso code switches to the
access register mode to get access to the per-cpu data structure to
execute the magic ectg instruction. After the ectg instruction the
code always switches back to the primary mode but for noexec=on the
correct mode is the secondary mode. The effect of the bug is that the
user space program looses the access to all mappings without PROT_EXEC,
e.g. the stack. The problem is fixed by restoring the mode that has
been active before the switch to the access register mode.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
vdso per cpu area allocation in smp_prepare_cpus() happens with GFP_KERNEL
but irqs disabled. Triggers this one:
Badness at kernel/lockdep.c:2280
Modules linked in:
CPU: 0 Not tainted 2.6.30 #2
Process swapper (pid: 1, task: 000000003fe88000, ksp: 000000003fe87eb8)
Krnl PSW : 0400c00180000000 0000000000083360 (lockdep_trace_alloc+0xec/0xf8)
[...]
Call Trace:
([<00000000000832b6>] lockdep_trace_alloc+0x42/0xf8)
[<00000000000b1880>] __alloc_pages_internal+0x3e8/0x5c4
[<00000000000b1b4a>] __get_free_pages+0x3a/0xb0
[<0000000000026546>] vdso_alloc_per_cpu+0x6a/0x18c
[<00000000005eff82>] smp_prepare_cpus+0x322/0x594
[<00000000005e8232>] kernel_init+0x76/0x398
[<000000000001bb1e>] kernel_thread_starter+0x6/0xc
[<000000000001bb18>] kernel_thread_starter+0x0/0xc
Fix this by moving the allocation out of the irqs disabled section.
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
swsusp_arch_suspend() actually saves all cpu register contents on
hibernation.
Machine checks must be disabled since swsusp_arch_suspend() stores
register contents to their lowcore save areas. That's the same
place where register contents on machine checks would be saved.
To avoid register corruption disable machine checks.
We must also disable machine checks in the new psw mask for
program checks, since swsusp_arch_suspend() may generate program
checks.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Our swsusp_arch_suspend() backend implementation disables prefixing
by setting the contents of the prefix register to 0.
However afterwards common code functions are called which might
access percpu data structures.
Since the lowcore contains e.g. the percpu base pointer this isn't
a good idea. So fix this by copying the hibernating cpu's lowcore to
absolute address zero.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Timer interrupts are excluded from being disabled during suspend. The
clock events code manages the disabling of clock events on its own
because the timer interrupt needs to be functional before the resume
code reenables the device interrupts.
The mfgpt timer request its interrupt without setting the IRQF_TIMER
flag so suspend_device_irqs() disables it as well which results in a
fatal resume failure.
Adding IRQF_TIMER to the interupt flags when requesting the mrgpt
timer interrupt solves the problem.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <new-submission>
Cc: Andres Salomon <dilinger@debian.org>
Cc: stable@kernel.org
Update the NOR flash support for TS-7200.
The TS-7200 models all have 16-bit NOR flash. Update the platform
init to support this.
Remove the private TS72XX_NOR_* defines and use the common ep93xx
defines for the external chip select physical base address instead.
Move the NOR flash registration into a static __init function. When
the NAND flash support is updated this function will also be used
to register the NAND flash for the TS-7250 and TS-7260.
Tested-by: Matthieu Crapet <mcrapet@gmail.com>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch for at_hdmac adds the slave transfers capability to the Atmel DMA
controller available on some AT91 SOCs. This allow peripheral to memory and
memory to peripheral transfers with hardware handshaking.
Slave structure for controller specific information is passed through channel
private data. This at_dma_slave structure is defined in at_hdmac.h header file
and relative hardware definition are moved to this file from at_hdmac_regs.h.
Doing this we allow the channel configuration from platform definition code.
This work is intensively based on dw_dmac and several slave implementations.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This AHB DMA Controller (aka HDMA or DMAC on AT91 systems) is availlable on
at91sam9rl chip. It will be used on other products in the future.
This first release covers only the memory-to-memory tranfer type. This is the
only tranfer type supported by this chip. On other products, it will be used
also for peripheral DMA transfer (slave API support to come).
I used dmatest client without problem in different configurations to test it.
Full documentation for this controller can be found in the SAM9RL datasheet:
http://www.atmel.com/dyn/products/product_card.asp?part_id=4243
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
If CONFIG_APM_EMULATION=n em-x270 build fails with linker error:
arch/arm/mach-pxa/built-in.o: In function `em_x270_battery_critical': em-x270.c:(.text+0x12c0): undefined reference to `apm_queue_event'
arch/arm/mach-pxa/built-in.o: In function `em_x270_battery_low': em-x270.c:(.text+0x12c8): undefined reference to `apm_queue_event'
make: *** [.tmp_vmlinux1] Error 1
Fix it.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
