Drivers that refer to a __devexit function in an operations
structure need to annotate that pointer with __devexit_p so it
is replaced with a NULL pointer when the section gets discarded.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current code does not properly free allocated irqs if request_threaded_irq
returns error, fix it.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge batch of fixes from Andrew Morton:
"The simple_open() cleanup was held back while I wanted for laggards to
merge things.
I still need to send a few checkpoint/restore patches. I've been
wobbly about merging them because I'm wobbly about the overall
prospects for success of the project. But after speaking with Pavel
at the LSF conference, it sounds like they're further toward
completion than I feared - apparently davem is at the "has stopped
complaining" stage regarding the net changes. So I need to go back
and re-review those patchs and their (lengthy) discussion."
* emailed from Andrew Morton <akpm@linux-foundation.org>: (16 patches)
memcg swap: use mem_cgroup_uncharge_swap fix
backlight: add driver for DA9052/53 PMIC v1
C6X: use set_current_blocked() and block_sigmask()
MAINTAINERS: add entry for sparse checker
MAINTAINERS: fix REMOTEPROC F: typo
alpha: use set_current_blocked() and block_sigmask()
simple_open: automatically convert to simple_open()
scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open()
libfs: add simple_open()
hugetlbfs: remove unregister_filesystem() when initializing module
drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback
fs/xattr.c:setxattr(): improve handling of allocation failures
fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed
fs/xattr.c: suppress page allocation failure warnings from sys_listxattr()
sysrq: use SEND_SIG_FORCED instead of force_sig()
proc: fix mount -t proc -o AAA
Many users of debugfs copy the implementation of default_open() when
they want to support a custom read/write function op. This leads to a
proliferation of the default_open() implementation across the entire
tree.
Now that the common implementation has been consolidated into libfs we
can replace all the users of this function with simple_open().
This replacement was done with the following semantic patch:
<smpl>
@ open @
identifier open_f != simple_open;
identifier i, f;
@@
-int open_f(struct inode *i, struct file *f)
-{
(
-if (i->i_private)
-f->private_data = i->i_private;
|
-f->private_data = i->i_private;
)
-return 0;
-}
@ has_open depends on open @
identifier fops;
identifier open.open_f;
@@
struct file_operations fops = {
...
-.open = open_f,
+.open = simple_open,
...
};
</smpl>
[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3.4: Fix an an Smatch warning that appeared in the 3.4 merge window
3.0: Fix kgdb test suite with SMP for all archs without HW single stepping
2.6.36: Fix kgdb sw breakpoints with CONFIG_DEBUG_RODATA=y limitations on x86
2.6.26: Fix oops on kgdb test suite with CONFIG_DEBUG_RODATA
Fix kgdb test suite with SMP for all archs with HW single stepping
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Merge tag 'for_linus-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb
Pull KGDB/KDB regression fixes from Jason Wessel:
- Fix a Smatch warning that appeared in the 3.4 merge window
- Fix kgdb test suite with SMP for all archs without HW single stepping
- Fix kgdb sw breakpoints with CONFIG_DEBUG_RODATA=y limitations on x86
- Fix oops on kgdb test suite with CONFIG_DEBUG_RODATA
- Fix kgdb test suite with SMP for all archs with HW single stepping
* tag 'for_linus-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb:
x86,kgdb: Fix DEBUG_RODATA limitation using text_poke()
kgdb,debug_core: pass the breakpoint struct instead of address and memory
kgdbts: (2 of 2) fix single step awareness to work correctly with SMP
kgdbts: (1 of 2) fix single step awareness to work correctly with SMP
kgdbts: Fix kernel oops with CONFIG_DEBUG_RODATA
kdb: Fix smatch warning on dbg_io_ops->is_console
There has long been a limitation using software breakpoints with a
kernel compiled with CONFIG_DEBUG_RODATA going back to 2.6.26. For
this particular patch, it will apply cleanly and has been tested all
the way back to 2.6.36.
The kprobes code uses the text_poke() function which accommodates
writing a breakpoint into a read-only page. The x86 kgdb code can
solve the problem similarly by overriding the default breakpoint
set/remove routines and using text_poke() directly.
The x86 kgdb code will first attempt to use the traditional
probe_kernel_write(), and next try using a the text_poke() function.
The break point install method is tracked such that the correct break
point removal routine will get called later on.
Cc: x86@kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: stable@vger.kernel.org # >= 2.6.36
Inspried-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
The do_fork and sys_open tests have never worked properly on anything
other than a UP configuration with the kgdb test suite. This is
because the test suite did not fully implement the behavior of a real
debugger. A real debugger tracks the state of what thread it asked to
single step and can correctly continue other threads of execution or
conditionally stop while waiting for the original thread single step
request to return.
Below is a simple method to cause a fatal kernel oops with the kgdb
test suite on a 2 processor ARM system:
while [ 1 ] ; do ls > /dev/null 2> /dev/null; done&
while [ 1 ] ; do ls > /dev/null 2> /dev/null; done&
echo V1I1F100 > /sys/module/kgdbts/parameters/kgdbts
Very soon after starting the test the kernel will start warning with
messages like:
kgdbts: BP mismatch c002487c expected c0024878
------------[ cut here ]------------
WARNING: at drivers/misc/kgdbts.c:317 check_and_rewind_pc+0x9c/0xc4()
[<c01f6520>] (check_and_rewind_pc+0x9c/0xc4)
[<c01f595c>] (validate_simple_test+0x3c/0xc4)
[<c01f60d4>] (run_simple_test+0x1e8/0x274)
The kernel will eventually recovers, but the test suite has completely
failed to test anything useful.
This patch implements behavior similar to a real debugger that does
not rely on hardware single stepping by using only software planted
breakpoints.
In order to mimic a real debugger, the kgdb test suite now tracks the
most recent thread that was continued (cont_thread_id), with the
intent to single step just this thread. When the response to the
single step request stops in a different thread that hit the original
break point that thread will now get continued, while the debugger
waits for the thread with the single step pending. Here is a high
level description of the sequence of events.
cont_instead_of_sstep = 0;
1) set breakpoint at do_fork
2) continue
3) Save the thread id where we stop to cont_thread_id
4) Remove breakpoint at do_fork
5) Reset the PC if needed depending on kernel exception type
6) soft single step
7) Check where we stopped
if current thread != cont_thread_id {
if (here for more than 2 times for the same thead) {
### must be a really busy system, start test again ###
goto step 1
}
goto step 5
} else {
cont_instead_of_sstep = 0;
}
8) clean up and run test again if needed
9) Clear out any threads that were waiting on a break point at the
point in time the test is ended with get_cont_catch(). This
happens sometimes because breakpoints are used in place of single
stepping and some threads could have been in the debugger exception
handling queue because breakpoints were hit concurrently on
different CPUs. This also means we wait at least one second before
unplumbing the debugger connection at the very end, so as respond
to any debug threads waiting to be serviced.
Cc: stable@vger.kernel.org # >= 3.0
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
The do_fork and sys_open tests have never worked properly on anything
other than a UP configuration with the kgdb test suite. This is
because the test suite did not fully implement the behavior of a real
debugger. A real debugger tracks the state of what thread it asked to
single step and can correctly continue other threads of execution or
conditionally stop while waiting for the original thread single step
request to return.
Below is a simple method to cause a fatal kernel oops with the kgdb
test suite on a 4 processor x86 system:
while [ 1 ] ; do ls > /dev/null 2> /dev/null; done&
while [ 1 ] ; do ls > /dev/null 2> /dev/null; done&
while [ 1 ] ; do ls > /dev/null 2> /dev/null; done&
while [ 1 ] ; do ls > /dev/null 2> /dev/null; done&
echo V1I1F1000 > /sys/module/kgdbts/parameters/kgdbts
Very soon after starting the test the kernel will oops with a message like:
kgdbts: BP mismatch 3b7da66480 expected ffffffff8106a590
WARNING: at drivers/misc/kgdbts.c:303 check_and_rewind_pc+0xe0/0x100()
Call Trace:
[<ffffffff812994a0>] check_and_rewind_pc+0xe0/0x100
[<ffffffff81298945>] validate_simple_test+0x25/0xc0
[<ffffffff81298f77>] run_simple_test+0x107/0x2c0
[<ffffffff81298a18>] kgdbts_put_char+0x18/0x20
The warn will turn to a hard kernel crash shortly after that because
the pc will not get properly rewound to the right value after hitting
a breakpoint leading to a hard lockup.
This change is broken up into 2 pieces because archs that have hw
single stepping (2.6.26 and up) need different changes than archs that
do not have hw single stepping (3.0 and up). This change implements
the correct behavior for an arch that supports hw single stepping.
A minor defect was fixed where sys_open should be do_sys_open
for the sys_open break point test. This solves the problem of running
a 64 bit with a 32 bit user space. The sys_open() never gets called
when using the 32 bit file system for the kgdb testsuite because the
32 bit binaries invoke the compat_sys_open() call leading to the test
never completing.
In order to mimic a real debugger, the kgdb test suite now tracks the
most recent thread that was continued (cont_thread_id), with the
intent to single step just this thread. When the response to the
single step request stops in a different thread that hit the original
break point that thread will now get continued, while the debugger
waits for the thread with the single step pending. Here is a high
level description of the sequence of events.
cont_instead_of_sstep = 0;
1) set breakpoint at do_fork
2) continue
3) Save the thread id where we stop to cont_thread_id
4) Remove breakpoint at do_fork
5) Reset the PC if needed depending on kernel exception type
6) if (cont_instead_of_sstep) { continue } else { single step }
7) Check where we stopped
if current thread != cont_thread_id {
cont_instead_of_sstep = 1;
goto step 5
} else {
cont_instead_of_sstep = 0;
}
8) clean up and run test again if needed
Cc: stable@vger.kernel.org # >= 2.6.26
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
On x86 the kgdb test suite will oops when the kernel is compiled with
CONFIG_DEBUG_RODATA and you run the tests after boot time. This is
regression has existed since 2.6.26 by commit: b33cb815 (kgdbts: Use
HW breakpoints with CONFIG_DEBUG_RODATA).
The test suite can use hw breakpoints for all the tests, but it has to
execute the hardware breakpoint specific tests first in order to
determine that the hw breakpoints actually work. Specifically the
very first test causes an oops:
# echo V1I1 > /sys/module/kgdbts/parameters/kgdbts
kgdb: Registered I/O driver kgdbts.
kgdbts:RUN plant and detach test
Entering kdb (current=0xffff880017aa9320, pid 1078) on processor 0 due to Keyboard Entry
[0]kdb> kgdbts: ERROR PUT: end of test buffer on 'plant_and_detach_test' line 1 expected OK got $E14#aa
WARNING: at drivers/misc/kgdbts.c:730 run_simple_test+0x151/0x2c0()
[...oops clipped...]
This commit re-orders the running of the tests and puts the RODATA
check into its own function so as to correctly avoid the kernel oops
by detecting and using the hw breakpoints.
Cc: <stable@vger.kernel.org> # >= 2.6.26
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
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Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system
Pull "Disintegrate and delete asm/system.h" from David Howells:
"Here are a bunch of patches to disintegrate asm/system.h into a set of
separate bits to relieve the problem of circular inclusion
dependencies.
I've built all the working defconfigs from all the arches that I can
and made sure that they don't break.
The reason for these patches is that I recently encountered a circular
dependency problem that came about when I produced some patches to
optimise get_order() by rewriting it to use ilog2().
This uses bitops - and on the SH arch asm/bitops.h drags in
asm-generic/get_order.h by a circuituous route involving asm/system.h.
The main difficulty seems to be asm/system.h. It holds a number of
low level bits with no/few dependencies that are commonly used (eg.
memory barriers) and a number of bits with more dependencies that
aren't used in many places (eg. switch_to()).
These patches break asm/system.h up into the following core pieces:
(1) asm/barrier.h
Move memory barriers here. This already done for MIPS and Alpha.
(2) asm/switch_to.h
Move switch_to() and related stuff here.
(3) asm/exec.h
Move arch_align_stack() here. Other process execution related bits
could perhaps go here from asm/processor.h.
(4) asm/cmpxchg.h
Move xchg() and cmpxchg() here as they're full word atomic ops and
frequently used by atomic_xchg() and atomic_cmpxchg().
(5) asm/bug.h
Move die() and related bits.
(6) asm/auxvec.h
Move AT_VECTOR_SIZE_ARCH here.
Other arch headers are created as needed on a per-arch basis."
Fixed up some conflicts from other header file cleanups and moving code
around that has happened in the meantime, so David's testing is somewhat
weakened by that. We'll find out anything that got broken and fix it..
* tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits)
Delete all instances of asm/system.h
Remove all #inclusions of asm/system.h
Add #includes needed to permit the removal of asm/system.h
Move all declarations of free_initmem() to linux/mm.h
Disintegrate asm/system.h for OpenRISC
Split arch_align_stack() out from asm-generic/system.h
Split the switch_to() wrapper out of asm-generic/system.h
Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h
Create asm-generic/barrier.h
Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h
Disintegrate asm/system.h for Xtensa
Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
Disintegrate asm/system.h for Tile
Disintegrate asm/system.h for Sparc
Disintegrate asm/system.h for SH
Disintegrate asm/system.h for Score
Disintegrate asm/system.h for S390
Disintegrate asm/system.h for PowerPC
Disintegrate asm/system.h for PA-RISC
Disintegrate asm/system.h for MN10300
...
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it. Performed with the following command:
perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`
Signed-off-by: David Howells <dhowells@redhat.com>
asm/system.h is a cause of circular dependency problems because it contains
commonly used primitive stuff like barrier definitions and uncommonly used
stuff like switch_to() that might require MMU definitions.
asm/system.h has been disintegrated by this point on all arches into the
following common segments:
(1) asm/barrier.h
Moved memory barrier definitions here.
(2) asm/cmpxchg.h
Moved xchg() and cmpxchg() here. #included in asm/atomic.h.
(3) asm/bug.h
Moved die() and similar here.
(4) asm/exec.h
Moved arch_align_stack() here.
(5) asm/elf.h
Moved AT_VECTOR_SIZE_ARCH here.
(6) asm/switch_to.h
Moved switch_to() here.
Signed-off-by: David Howells <dhowells@redhat.com>
Most of these patches convert code from using static platform data to
describing the hardware in the device tree. This is only the first
half of the changes for v3.4 because a lot of patches for this topic
came in the last week before the merge window.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: device tree work" from Arnd Bergmann:
"Most of these patches convert code from using static platform data to
describing the hardware in the device tree. This is only the first
half of the changes for v3.4 because a lot of patches for this topic
came in the last week before the merge window.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>"
Fix up trivial conflicts in arch/arm/mach-vexpress/{Kconfig,core.h}
* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (86 commits)
Document: devicetree: add OF documents for arch-mmp
ARM: dts: append DTS file of pxa168
ARM: mmp: append OF support on pxa168
ARM: mmp: enable rtc clk in pxa168
i2c: pxa: add OF support
serial: pxa: add OF support
arm/dts: mt_ventoux: very basic support for TeeJet Mt.Ventoux board
ARM: OMAP2+: Remove extra ifdefs for board-generic
ARM: OMAP2+: Fix build error when only ARCH_OMAP2/3 or 4 is selected
ASoC: DT: Add digital microphone binding to PAZ00 board.
ARM: dt: Add ARM PMU to tegra*.dtsi
ARM: at91: at91sam9x5cm/dt: add leds support
ARM: at91: usb_a9g20/dt: add gpio-keys support
ARM: at91: at91sam9m10g45ek/dt: add gpio-keys support
ARM: at91: at91sam9m10g45ek/dt: add leds support
ARM: at91: usb_a9g20/dt: add leds support
ARM: at91/pio: add new PIO3 features
ARM: at91: add sam9_smc.o to at91sam9x5 build
ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter
ARM: at91/tc: add device tree support to atmel_tclib
...
Pull powerpc merge from Benjamin Herrenschmidt:
"Here's the powerpc batch for this merge window. It is going to be a
bit more nasty than usual as in touching things outside of
arch/powerpc mostly due to the big iSeriesectomy :-) We finally got
rid of the bugger (legacy iSeries support) which was a PITA to
maintain and that nobody really used anymore.
Here are some of the highlights:
- Legacy iSeries is gone. Thanks Stephen ! There's still some bits
and pieces remaining if you do a grep -ir series arch/powerpc but
they are harmless and will be removed in the next few weeks
hopefully.
- The 'fadump' functionality (Firmware Assisted Dump) replaces the
previous (equivalent) "pHyp assisted dump"... it's a rewrite of a
mechanism to get the hypervisor to do crash dumps on pSeries, the
new implementation hopefully being much more reliable. Thanks
Mahesh Salgaonkar.
- The "EEH" code (pSeries PCI error handling & recovery) got a big
spring cleaning, motivated by the need to be able to implement a
new backend for it on top of some new different type of firwmare.
The work isn't complete yet, but a good chunk of the cleanups is
there. Note that this adds a field to struct device_node which is
not very nice and which Grant objects to. I will have a patch soon
that moves that to a powerpc private data structure (hopefully
before rc1) and we'll improve things further later on (hopefully
getting rid of the need for that pointer completely). Thanks Gavin
Shan.
- I dug into our exception & interrupt handling code to improve the
way we do lazy interrupt handling (and make it work properly with
"edge" triggered interrupt sources), and while at it found & fixed
a wagon of issues in those areas, including adding support for page
fault retry & fatal signals on page faults.
- Your usual random batch of small fixes & updates, including a bunch
of new embedded boards, both Freescale and APM based ones, etc..."
I fixed up some conflicts with the generalized irq-domain changes from
Grant Likely, hopefully correctly.
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (141 commits)
powerpc/ps3: Do not adjust the wrapper load address
powerpc: Remove the rest of the legacy iSeries include files
powerpc: Remove the remaining CONFIG_PPC_ISERIES pieces
init: Remove CONFIG_PPC_ISERIES
powerpc: Remove FW_FEATURE ISERIES from arch code
tty/hvc_vio: FW_FEATURE_ISERIES is no longer selectable
powerpc/spufs: Fix double unlocks
powerpc/5200: convert mpc5200 to use of_platform_populate()
powerpc/mpc5200: add options to mpc5200_defconfig
powerpc/mpc52xx: add a4m072 board support
powerpc/mpc5200: update mpc5200_defconfig to fit for charon board
Documentation/powerpc/mpc52xx.txt: Checkpatch cleanup
powerpc/44x: Add additional device support for APM821xx SoC and Bluestone board
powerpc/44x: Add support PCI-E for APM821xx SoC and Bluestone board
MAINTAINERS: Update PowerPC 4xx tree
powerpc/44x: The bug fixed support for APM821xx SoC and Bluestone board
powerpc: document the FSL MPIC message register binding
powerpc: add support for MPIC message register API
powerpc/fsl: Added aliased MSIIR register address to MSI node in dts
powerpc/85xx: mpc8548cds - add 36-bit dts
...
Pull vfs pile 1 from Al Viro:
"This is _not_ all; in particular, Miklos' and Jan's stuff is not there
yet."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (64 commits)
ext4: initialization of ext4_li_mtx needs to be done earlier
debugfs-related mode_t whack-a-mole
hfsplus: add an ioctl to bless files
hfsplus: change finder_info to u32
hfsplus: initialise userflags
qnx4: new helper - try_extent()
qnx4: get rid of qnx4_bread/qnx4_getblk
take removal of PF_FORKNOEXEC to flush_old_exec()
trim includes in inode.c
um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() doesn't hold it
um: embed ->stub_pages[] into mmu_context
gadgetfs: list_for_each_safe() misuse
ocfs2: fix leaks on failure exits in module_init
ecryptfs: make register_filesystem() the last potential failure exit
ntfs: forgets to unregister sysctls on register_filesystem() failure
logfs: missing cleanup on register_filesystem() failure
jfs: mising cleanup on register_filesystem() failure
make configfs_pin_fs() return root dentry on success
configfs: configfs_create_dir() has parent dentry in dentry->d_parent
configfs: sanitize configfs_create()
...
Here's the big serial and tty merge for the 3.4-rc1 tree.
There's loads of fixes and reworks in here from Jiri for the tty layer,
and a number of patches from Alan to help try to wrestle the vt layer
into a sane model.
Other than that, lots of driver updates and fixes, and other minor
stuff, all detailed in the shortlog.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull TTY/serial patches from Greg KH:
"tty and serial merge for 3.4-rc1
Here's the big serial and tty merge for the 3.4-rc1 tree.
There's loads of fixes and reworks in here from Jiri for the tty
layer, and a number of patches from Alan to help try to wrestle the vt
layer into a sane model.
Other than that, lots of driver updates and fixes, and other minor
stuff, all detailed in the shortlog."
* tag 'tty-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (132 commits)
serial: pxa: add clk_prepare/clk_unprepare calls
TTY: Wrong unicode value copied in con_set_unimap()
serial: PL011: clear pending interrupts
serial: bfin-uart: Don't access tty circular buffer in TX DMA interrupt after it is reset.
vt: NULL dereference in vt_do_kdsk_ioctl()
tty: serial: vt8500: fix annotations for probe/remove
serial: remove back and forth conversions in serial_out_sync
serial: use serial_port_in/out vs serial_in/out in 8250
serial: introduce generic port in/out helpers
serial: reduce number of indirections in 8250 code
serial: delete useless void casts in 8250.c
serial: make 8250's serial_in shareable to other drivers.
serial: delete last unused traces of pausing I/O in 8250
pch_uart: Add module parameter descriptions
pch_uart: Use existing default_baud in setup_console
pch_uart: Add user_uartclk parameter
pch_uart: Add Fish River Island II uart clock quirks
pch_uart: Use uartclk instead of base_baud
mpc5200b/uart: select more tolerant uart prescaler on low baudrates
tty: moxa: fix bit test in moxa_start()
...
Not much here, just a few minor fixes and some conversions to the
module_*_driver() functions, making the codebase smaller.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char and misc patches for 3.4-rc1 from Greg KH:
"Not much here, just a few minor fixes and some conversions to the
module_*_driver() functions, making the codebase smaller."
* tag 'char-misc-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc: bmp085: Use unsigned long to store jiffies
char/ramoops: included linux/err.h twice
misc: bmp085: Handle jiffies overflow correctly
misc: fsa9480: Remove obsolete cleanup for clientdata
char: Fix typo in tlclk.c
char: Fix typo in viotape.c
cs5535-mfgpt: don't call __init function from __devinit
MISC: convert drivers/misc/* to use module_spi_driver()
MISC: convert drivers/misc/* to use module_i2c_driver()
MISC: convert drivers/misc/* to use module_platform_driver()
All num, magic and owner are set by alloc_tty_driver. No need to
re-set them on each allocation site.
pti driver sets something different to what it passes to
alloc_tty_driver. It is not a bug, since we don't use the lines
parameter in any way. Anyway this is fixed, and now we do the right
thing.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It was added back in 2004 and never used for anything real. Remove the
only assignment in the tree as well.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
class_create() doesn't return a NULL, it only returns ERR_PTRs.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This fixes following compilation warning:
drivers/misc/bmp085.c: In function ‘bmp085_get_pressure’:
drivers/misc/bmp085.c:238:4: warning: comparison of distinct pointer
types lacks a cast [enabled by default]
Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some SoC have a 32 bit variant of Timer Counter Blocks. We do not
need the chaining of two 16 bit counters anymore for them.
The SoC nature is deduced from the device tree "compatible" string.
For non-device-tree configurations, backward compatibility is maintained
by using the default 16 bit counter configuration.
This patch addresses both the atmel_tclib and its user: tcb_clksrc
clocksource.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Device tree support added to atmel_tclib: the generic Timer Counter
library. This is used by the clocksource/clockevent driver tcb_clksrc.
The current DT enabled platforms are also modified to use it:
- .dtsi files are modified to add Timer Counter Block entries
- alias are created to allow identification of each block
- clkdev lookup tables are added for clocks identification.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Requesting iomem region and ioremaping is now done using
the resource size specified instead of a constant value.
Each <SoC>_device.c file is modified accordingly to reflect
actual user interface size.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
When the system is under heavy load, we occasionally saw a problem where
the system would get a legitimate interrupt when they should be
disabled.
This was caused by the data_dma_cb() DMA callback unconditionally
re-enabling FPGA interrupts even when data dumping is disabled. When
data dumping was re-enabled, the irq handler would fire while a DMA was
in progress. The "BUG_ON(priv->inflight != NULL);" during the second
invocation of the DMA callback caused the system to crash.
To fix the issue, the priv->enabled boolean is moved under the
protection of the priv->lock spinlock. The DMA callback checks the
boolean to know whether to re-enable FPGA interrupts before it returns.
Now that it is fixed, the driver keeps FPGA interrupts disabled when it
expects that they are disabled, fixing the bug.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Lockdep occasionally complains with the message:
INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
This is caused by calling videobuf_dma_unmap() under spin_lock_irq(). To
fix the warning, we drop the lock before unmapping and freeing the
buffer.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
By using the time_is_before_jiffies() macro instead of normal
arithmetic, the jiffies overflow is handled correctly.
Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A few new i2c-drivers came into the kernel which clear the clientdata-pointer
on exit or error. This is obsolete meanwhile, the core will do it.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nothing big here, some Kconfig fixes for the MISC_DEVICES config option
that was being used incorrectly, and some other minor bug fixes.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Minor char-misc fixes for 3.3-rc3
Nothing big here, some Kconfig fixes for the MISC_DEVICES config option
that was being used incorrectly, and some other minor bug fixes.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tag 'char-misc-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mmc: cb710 core: Add missing spin_lock_init for irq_lock of struct cb710_chip
cs5535-mfgpt: don't call __init function from __devinit
vmw_balloon: fix for a -Wuninitialized warning
drivers: misc: Remove MISC_DEVICES config option
c2port: fix build error for duramar2150 due to missing header.
Fix and reset_all_timers() to be __devinit and not __init since the
function gets called from cs5535_mfgpt_probe which is __devinit.
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
lkdtm_do_action() may call sleeping functions like kmalloc(), so do not
call it with spin lock held.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix scan_timers() to be __devinit and not __init since
the function get called from cs5535_mfgpt_probe which is
__devinit.
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix for a -Wuninitialized compiler warning. Changed return value of
vmballoon_send_lock_page() from bool to int to be able to distinguish
between the error cases to avoid uninitialized use of hv_status in
vmballoon_reserve_page()
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use the helper in the rest of the tty drivers. This is a simple
replacement.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch converts the drivers in drivers/misc/* to use the
module_spi_driver() macro which makes the code smaller and a bit
simpler.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Daniel Mack <zonque@gmail.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch converts the drivers in drivers/misc/* to use the
module_i2c_driver() macro which makes the code smaller and a bit
simpler.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: Anantha Narayanan <Anantha.Narayanan@intel.com>
Cc: Hemanth V <hemanthv@ti.com>
Cc: Christoph Mair <christoph.mair@gmail.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Ben Gardner <bgardner@wabtec.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Kalhan Trisal <kalhan.trisal@intel.com>
Cc: Darrick J. Wong <djwong@us.ibm.com>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch converts the drivers in drivers/misc/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Pavan Savoy <pavan_savoy@ti.com>
Cc: Donggeun Kim <dg77.kim@samsung.com>
Acked-By: Pratyush Anand <pratyush.anand@st.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
MISC_DEVICES option alone does not select any kernel code and can cause dependency build warnings, such as:
warning: (KS8851 && AX88796_93CX6 && RTL8180 && RTL8187 && ADM8211 && RT2400PCI && RT2500PCI && RT61PCI && RT2800PCI && R8187SE) selects EEPROM_93CX6 which has unmet direct dependencies (MISC_DEVICES)
As the current drivers/misc/Kconfig stands, it is only possible to select the drivers below if MISC_DEVICES option is selected:
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
source "drivers/misc/iwmc3200top/Kconfig"
source "drivers/misc/ti-st/Kconfig"
source "drivers/misc/lis3lv02d/Kconfig"
source "drivers/misc/carma/Kconfig"
source "drivers/misc/altera-stapl/Kconfig"
So remove MISC_DEVICES option so that nothing is dependant on it.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This file needs the basic headers for resource management,
otherwise we will see this build error:
CC [M] drivers/misc/c2port/c2port-duramar2150.o
drivers/misc/c2port/c2port-duramar2150.c: In function ‘duramar2150_c2port_init’:
drivers/misc/c2port/c2port-duramar2150.c:125:2: error: implicit declaration of function ‘request_region’ [-Werror=implicit-function-declaration]
drivers/misc/c2port/c2port-duramar2150.c:139:2: error: implicit declaration of function ‘release_region’ [-Werror=implicit-function-declaration]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Merge tag 'for-linus' of git://github.com/rustyrussell/linux
Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1
* tag 'for-linus' of git://github.com/rustyrussell/linux:
module_param: check that bool parameters really are bool.
intelfbdrv.c: bailearly is an int module_param
paride/pcd: fix bool verbose module parameter.
module_param: make bool parameters really bool (drivers & misc)
module_param: make bool parameters really bool (arch)
module_param: make bool parameters really bool (core code)
kernel/async: remove redundant declaration.
printk: fix unnecessary module_param_name.
lirc_parallel: fix module parameter description.
module_param: avoid bool abuse, add bint for special cases.
module_param: check type correctness for module_param_array
modpost: use linker section to generate table.
modpost: use a table rather than a giant if/else statement.
modules: sysfs - export: taint, coresize, initsize
kernel/params: replace DEBUGP with pr_debug
module: replace DEBUGP with pr_debug
module: struct module_ref should contains long fields
module: Fix performance regression on modules with large symbol tables
module: Add comments describing how the "strmap" logic works
Fix up conflicts in scripts/mod/file2alias.c due to the new linker-
generated table approach to adding __mod_*_device_table entries. The
ARM sa11x0 mcp bus needed to be converted to that too.
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (59 commits)
rtc: max8925: Add function to work as wakeup source
mfd: Add pm ops to max8925
mfd: Convert aat2870 to dev_pm_ops
mfd: Still check other interrupts if we get a wm831x touchscreen IRQ
mfd: Introduce missing kfree in 88pm860x probe routine
mfd: Add S5M series configuration
mfd: Add s5m series irq driver
mfd: Add S5M core driver
mfd: Improve mc13xxx dt binding document
mfd: Fix stmpe section mismatch
mfd: Fix stmpe build warning
mfd: Fix STMPE I2c build failure
mfd: Constify aat2870-core i2c_device_id table
gpio: Add support for stmpe variant 801
mfd: Add support for stmpe variant 801
mfd: Add support for stmpe variant 610
mfd: Add support for STMPE SPI interface
mfd: Separate out STMPE controller and interface specific code
misc: Remove max8997-muic sysfs attributes
mfd: Remove unused wm831x_irq_data_to_mask_reg()
...
Fix up trivial conflict in drivers/leds/Kconfig due to addition of
LEDS_MAX8997 and LEDS_TCA6507 next to each other.
module_param(bool) used to counter-intuitively take an int. In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.
It's time to remove the int/unsigned int option. For this version
it'll simply give a warning, but it'll break next kernel version.
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
module_param_array(), unlike its non-array cousins, didn't check the type
of the variable. Fixing this found two bugs.
Cc: Luca Risolia <luca.risolia@studio.unibo.it>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Cc: linux-media@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
