Pull sparc fixes from David Miller.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Eliminate obsolete __handle_softirq() function
sparc64: Fix bootup crash on sun4v.
Miscellaneous bug fixes to GPIO drivers and for a corner case in the
gpio device tree parsing code.
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6
Pull GPIO bug fixes from Grant Likely:
"Miscellaneous bug fixes to GPIO drivers and for a corner case in the
gpio device tree parsing code."
* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
gpio/exynos: Fix compiler warning in gpio-samsung.c file
gpio: Fix range check in of_gpio_simple_xlate()
gpio: Fix uninitialized variable bit in adp5588_irq_handler
gpio/sodaville: Convert sodaville driver to new irqdomain API
Miscellaneous driver bug fixes. No major changes in this branch.
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Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6
Pull SPI bug fixes from Grant Likely:
"Miscellaneous driver bug fixes. No major changes in this branch."
* tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6:
spi/imx: prevent NULL pointer dereference in spi_imx_probe()
spi/imx: mark base member in spi_imx_data as __iomem
spi/mpc83xx: fix NULL pdata dereference bug
spi/davinci: Fix DMA API usage in davinci
spi/pL022: include types.h to remove compilation warnings
The invocation of softirq is now handled by irq_exit(), so there is no
need for sparc64 to invoke it on the trap-return path. In fact, doing so
is a bug because if the trap occurred in the idle loop, this invocation
can result in lockdep-RCU failures. The problem is that RCU ignores idle
CPUs, and the sparc64 trap-return path to the softirq handlers fails to
tell RCU that the CPU must be considered non-idle while those handlers
are executing. This means that RCU is ignoring any RCU read-side critical
sections in those handlers, which in turn means that RCU-protected data
can be yanked out from under those read-side critical sections.
The shiny new lockdep-RCU ability to detect RCU read-side critical sections
that RCU is ignoring located this problem.
The fix is straightforward: Make sparc64 stop manually invoking the
softirq handlers.
Reported-by: Meelis Roos <mroos@linux.ee>
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Meelis Roos <mroos@linux.ee>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
The DS driver registers as a subsys_initcall() but this can be too
early, in particular this risks registering before we've had a chance
to allocate and setup module_kset in kernel/params.c which is
performed also as a subsyts_initcall().
Register DS using device_initcall() insteal.
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: stable@vger.kernel.org
The change
commit 4416e9eb0b
Author: Gregory Bean <gbean@codeaurora.org>
Date: Wed Jul 28 10:22:12 2010 -0700
arm: msm: Fix section mismatch in smd.c.
fixes a section mismatch between the board file and the smd driver's
probe function, however, it misses the additional mismatches between
the probe function and some routines it calls. Fix these up as well.
Signed-off-by: David Brown <davidb@codeaurora.org>
The change
commit 461cbe77d0
Author: Gregory Bean <gbean@codeaurora.org>
Date: Wed Jul 28 10:22:13 2010 -0700
video: msm: Fix section mismatch in mddi.c.
fixes a section mismatch between the board file and the driver's probe
function, however, it misses the additional mismatches between the
probe function and some routines it calls. Fix these up as well.
Signed-off-by: David Brown <davidb@codeaurora.org>
Fixes the following warnings,
arch/arm/mach-msm/board-trout.c: In function 'trout_init':
arch/arm/mach-msm/board-trout.c:71: error: 'system_rev' undeclared (first use in this function)
arch/arm/mach-msm/board-trout.c:71: error: (Each undeclared identifier is reported only once
arch/arm/mach-msm/board-trout.c:71: error: for each function it appears in.)
and
arch/arm/mach-msm/board-trout-panel.c: In function 'trout_init_panel':
arch/arm/mach-msm/board-trout-panel.c:267: error: 'system_rev' undeclared (first use in this function)
arch/arm/mach-msm/board-trout-panel.c:267: error: (Each undeclared identifier is reported only once
arch/arm/mach-msm/board-trout-panel.c:267: error: for each function it appears in.)
This came in with the following commit 9f97da78bf
which removes asm/system.h
Signed-off-by: Daniel Walker <dwalker@fifo99.com>
cc: David Howells <dhowells@redhat.com>
cc: Bryan Huntsman <bryanh@codeaurora.org>
cc: linux-arm-msm@vger.kernel.org
cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: David Brown <davidb@codeaurora.org>
This old fixup causes a build failure, so I remove it just like in
trout.
Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: David Brown <davidb@codeaurora.org>
Building with IRQ_WORK configured results in
kernel/irq_work.c: In function ‘irq_work_run’:
kernel/irq_work.c:110: error: implicit declaration of function ‘irqs_disabled’
The appropriate header just needs to be included.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
commit 93f378883c
"Fix ia64 build errors (fallout from system.h disintegration)"
introduced arch/ia64/include/asm/cmpxchg.h as a temporary
build fix and stated:
"... leave the migration of xchg() and cmpxchg() to this new
header file for a future patch."
Migrate the appropriate chunks from asm/intrinsics.h and fix
the whitespace issues in the migrated chunk.
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
commit ec2212088c
"Disintegrate asm/system.h for Alpha"
combined with commit b4816afa39
"Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h"
introduced the concept of asm/cmpxchg.h but the alpha arch
never got one. Fork the cmpxchg content out of the asm/atomic.h
file to create one.
Some minor whitespace fixups were done on the block of code that
created the new file.
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Commit 94e5a85b ("ARM: earlier initialization of vectors page") made it
the responsibility of paging_init to initialise the vectors page.
This patch adds a call to early_trap_init for the !CONFIG_MMU case,
placing the vectors at CONFIG_VECTORS_BASE.
Cc: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The description for the CPU_HIGH_VECTOR Kconfig option for nommu builds
doesn't make any sense.
This patch fixes up the trivial grammatical error.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Some bootloaders are broken enough to expose an ATAG_MEM with
a null size. Converting such tag to a memory node leads to
an unbootable system.
Skip over zero sized ATAG_MEM to avoid this situation.
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
atags_to_fdt() returns 1 when it fails to find a valid FDT signature.
The CONFIG_ARM_ATAG_DTB_COMPAT code is supposed to retry with another
location, but only does so when the initial call doesn't fail.
Fix this by using the correct condition in the assembly code.
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The AMBA bus regulator support is being used to model on/off switches
for power domains which isn't terribly idiomatic for modern kernels with
the generic power domain code and creates integration problems on platforms
which don't use regulators for their power domains as it's hard to tell
the difference between a regulator that is needed but failed to be provided
and one that isn't supposed to be there (though DT does make that easier).
Platforms that wish to use the regulator API to manage their power domains
can indirect via the power domain interface.
This feature is only used with the vape supply of the db8500 PRCMU
driver which supplies the UARTs and MMC controllers, none of which have
support for managing vcore at runtime in mainline (only pl022 SPI
controller does). Update that supply to have an always_on constraint
until the power domain support for the system is updated so that it is
enabled for these users, this is likely to have no impact on practical
systems as probably at least one of these devices will be active and
cause AMBA to hold the supply on anyway.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
In sound/pci/hda/patch_realtek.c::alc_auto_fill_dac_nids(), in the
'for (;;)' loop, if the 'badness' value returned from
fill_and_eval_dacs() is negative, then we'll return from the function
without freeing the memory we allocated for 'best_cfg', thus leaking.
Fix the leak by kfree()'ing the memory when badness is negative.
While I was there I also noticed some trailing whitespace in the
function that I removed (along with all other trailing whitespace in
the file) - it didn't seem worth-while to do that as two patches, so I
hope it's OK that I just did it all as one patch.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
non-mlx4 hardware.
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Merge tag 'srpt-srq-type' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull infiniband fix from Roland Dreier:
"Add a fix for a bug hit by Alexey Shvetsov in ib_srtp that hits on
non-mlx4 hardware."
* tag 'srpt-srq-type' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/srpt: Set srq_type to IB_SRQT_BASIC
We've now fixed IS_ENABLED() and friends to not require any special
"__enabled_" prefixed versions of the normal Kconfig options, so delete
the last traces of them being generated.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit 953742c8fe.
Dumping two lines into autoconf.h for all existing Kconfig options
results in a giant file (~16k lines) we have to process each time we
compile something. We've weaned IS_ENABLED() and similar off of
requiring the __enabled_ definitions so now we can revert the change
which caused all the extra lines.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Using IS_ENABLED() within C (vs. within CPP #if statements) in its
current form requires us to actually define every possible bool/tristate
Kconfig option twice (__enabled_* and __enabled_*_MODULE variants).
This results in a huge autoconf.h file, on the order of 16k lines for a
x86_64 defconfig.
Fixing IS_ENABLED to be able to work on the smaller subset of just
things that we really have defined is step one to fixing this. Which
means it has to not choke when fed non-enabled options, such as:
include/linux/netdevice.h:964:1: warning: "__enabled_CONFIG_FCOE_MODULE" is not defined [-Wundef]
The original prototype of how to implement a C and preprocessor
compatible way of doing this came from the Google+ user "comex ." in
response to Linus' crowdsourcing challenge for a possible improvement on
his earlier C specific solution:
#define config_enabled(x) (__stringify(x)[0] == '1')
In this implementation, I've chosen variable names that hopefully make
how it works more understandable.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A user reported that booting his box up with btrfs root on 3.4 was way
slower than on 3.3 because I removed the ideal caching code. It turns out
that we don't load the free space cache if we're in a commit for deadlock
reasons, but since we're reading the cache and it hasn't changed yet we are
safe reading the inode and free space item from the commit root, so do that
and remove all of the deadlock checks so we don't unnecessarily skip loading
the free space cache. The user reported this fixed the slowness. Thanks,
Tested-by: Calvin Walton <calvin.walton@kepstin.ca>
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Here are a number of fixes for the USB core and drivers for 3.4-rc2
Lots of tiny xhci fixes here, a few usb-serial driver fixes and new device ids,
and a smattering of other minor fixes in different USB drivers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of fixes for the USB core and drivers for 3.4-rc2
Lots of tiny xhci fixes here, a few usb-serial driver fixes and new
device ids, and a smattering of other minor fixes in different USB
drivers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'usb-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (30 commits)
USB: update usbtmc api documentation
xHCI: Correct the #define XHCI_LEGACY_DISABLE_SMI
xHCI: use gfp flags from caller instead of GFP_ATOMIC
xHCI: add XHCI_RESET_ON_RESUME quirk for VIA xHCI host
USB: fix bug of device descriptor got from superspeed device
xhci: Fix register save/restore order.
xhci: Restore event ring dequeue pointer on resume.
xhci: Don't write zeroed pointers to xHC registers.
xhci: Warn when hosts don't halt.
xhci: don't re-enable IE constantly
usb: xhci: fix section mismatch in linux-next
xHCI: correct to print the true HSEE of USBCMD
USB: serial: fix race between probe and open
UHCI: hub_status_data should indicate if ports are resuming
EHCI: keep track of ports being resumed and indicate in hub_status_data
USB: fix race between root-hub suspend and remote wakeup
USB: sierra: add support for Sierra Wireless MC7710
USB: ftdi_sio: fix race condition in TIOCMIWAIT, and abort of TIOCMIWAIT when the device is removed
USB: ftdi_sio: fix status line change handling for TIOCMIWAIT and TIOCGICOUNT
USB: don't ignore suspend errors for root hubs
...
Here are some tty and serial fixes for 3.4-rc2.
Most important here is the pl011 fix, which has been reported by about
100 different people, which means more people use it than I expected :)
There are also some 8250 driver reverts due to some problems reported by
them. And other minor fixes as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty and serial fixes from Greg KH:
"Here are some tty and serial fixes for 3.4-rc2.
Most important here is the pl011 fix, which has been reported by about
100 different people, which means more people use it than I expected
:)
There are also some 8250 driver reverts due to some problems reported
by them. And other minor fixes as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'tty-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
pch_uart: Add Kontron COMe-mTT10 uart clock quirk
pch_uart: Fix MSI setting issue
serial/8250_pci: add a "force background timer" flag and use it for the "kt" serial port
Revert "serial/8250_pci: setup-quirk workaround for the kt serial controller"
Revert "serial/8250_pci: init-quirk msi support for kt serial controller"
tty/serial/omap: console can only be built-in
serial: samsung: fix omission initialize ulcon in reset port fn()
printk(): add KERN_CONT where needed in hpet and vt code
tty/serial: atmel_serial: fix RS485 half-duplex problem
tty: serial: altera_uart: Check for NULL platform_data in probe.
isdn/gigaset: use gig_dbg() for debugging output
omap-serial: Fix the error handling in the omap_serial probe
serial: PL011: move interrupt clearing
Here are a number of bugfixes for the drivers/staging/ portion of the kernel
that have been reported recently.
Nothing major here, with maybe the exception of the ramster code can now be
built so it is enabled in the build again, and lots of memory leaks that people
like to have fixed on their systems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree fixes from Greg KH:
"Here are a number of bugfixes for the drivers/staging/ portion of the
kernel that have been reported recently.
Nothing major here, with maybe the exception of the ramster code can
now be built so it is enabled in the build again, and lots of memory
leaks that people like to have fixed on their systems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'staging-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: android: fix mem leaks in __persistent_ram_init()
staging: vt6656: Don't leak memory in drivers/staging/vt6656/ioctl.c::private_ioctl()
staging: iio: hmc5843: Fix crash in probe function.
staging/xgifb: fix display on XGI Volari Z11m cards
Staging: android: timed_gpio: Fix resource leak in timed_gpio_probe error paths
android: make persistent_ram based drivers depend on HAVE_MEMBLOCK
staging: iio: ak8975: Remove i2c client data corruption
staging: drm/omap: move where DMM driver is registered
staging: zsmalloc: fix memory leak
Staging: rts_pstor: off by one in for loop
staging: ozwpan: Added new maintainer for ozwpan
staging:rts_pstor:Avoid "Bad target number" message when probing driver
staging:rts_pstor:Fix possible panic by NULL pointer dereference
Staging: vt6655-6: check keysize before memcpy()
staging/media/as102: Don't call release_firmware() on uninitialized variable
staging:iio:core add missing increment of loop index in iio_map_array_unregister()
staging: ramster: unbreak my heart
staging/vme: Fix module parameters
staging: sep: Fix sign of error
Here are some minor fixes for the driver core and kobjects that people have
reported recently.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and kobject fixes from Greg KH:
"Here are some minor fixes for the driver core and kobjects that people
have reported recently.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'driver-core-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
kobject: provide more diagnostic info for kobject_add_internal() failures
sysfs: handle 'parent deleted before child added'
sysfs: Prevent crash on unset sysfs group attributes
sysfs: Update the name hash for an entry after changing the namespace
drivers/base: fix compiler warning in SoC export driver - idr should be ida
drivers/base: Remove unneeded spin_lock_init call for soc_lock
Format string bug fix for irqdomain debug output on 64 bit platforms
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Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6
Pull a fix for the recent irqdomain bug fixes from Grant Likely:
"I flubbed one patch in the last pull request which broke a format
string on 64 bit platforms. Here's the fix."
* tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6:
irq_domain: fix type mismatch in debugfs output format
sizeof(void*) returns an unsigned long, but it was being used as a width parameter to a "%-*s" format string which requires an int. On 64 bit platforms this causes a type mismatch:
linux/kernel/irq/irqdomain.c:575: warning: field width should have type
'int', but argument 6 has type 'long unsigned int'
This change casts the size to an int so printf gets the right data type.
Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: David Daney <david.daney@cavium.com>
Pull trivial perf build failure fix from Thomas Gleixner.
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Fix getrusage() related build failure on glibc trunk
Pull timer fixes from Thomas Gleixner:
"The itimer removal one is not strictly a fix, but I really wanted to
avoid a rebase of the urgent ones."
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "clocksource: Load the ACPI PM clocksource asynchronously"
clockevents: tTack broadcast device mode change in tick_broadcast_switch_to_oneshot()
itimer: Use printk_once instead of WARN_ONCE
nohz: Fix stale jiffies update in tick_nohz_restart()
tick: Document TICK_ONESHOT config option
proc: stats: Use arch_idle_time for idle and iowait times if available
itimer: Schedule silent NULL pointer fixup in setitimer() for removal
Pull x86 fixes from Thomas Gleixner.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Use correct byte-sized register constraint in __add()
x86: Use correct byte-sized register constraint in __xchg_op()
x86: vsyscall: Use NULL instead 0 for a pointer argument
If, in __persistent_ram_init(), the call to
persistent_ram_buffer_init() fails or the call to
persistent_ram_init_ecc() fails then we fail to free the memory we
allocated to 'prz' with kzalloc() - thus leaking it.
To prevent the leaks I consolidated all error exits from the function
at a 'err:' label at the end and made all error cases jump to that
label where we can then make sure we always free 'prz'. This is safe
since all the situations where the code bails out happen before 'prz'
has been stored anywhere and although we'll do a redundant kfree(NULL)
call in the case of kzalloc() itself failing that's OK since kfree()
deals gracefully with NULL pointers and I felt it was more important
to keep all error exits at a single location than to avoid that one
harmless/redundant kfree() on a error path.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Colin Cross <ccross@android.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If copy_to_user() fails in the WLAN_CMD_GET_NODE_LIST case of the
switch in drivers/staging/vt6656/ioctl.c::private_ioctl() we'll leak
the memory allocated to 'pNodeList'. Fix that by kfree'ing the memory
in the failure case.
Also remove a pointless cast (to type 'PSNodeList') of a kmalloc()
return value - kmalloc() returns a void pointer that is implicitly
converted, so there is no need for an explicit cast.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge fixes from Andrew Morton.
* emailed from Andrew Morton <akpm@linux-foundation.org>: (14 patches)
panic: fix stack dump print on direct call to panic()
drivers/rtc/rtc-pl031.c: enable clock on all ST variants
Revert "mm: vmscan: fix misused nr_reclaimed in shrink_mem_cgroup_zone()"
hugetlb: fix race condition in hugetlb_fault()
drivers/rtc/rtc-twl.c: use static register while reading time
drivers/rtc/rtc-s3c.c: add placeholder for driver private data
drivers/rtc/rtc-s3c.c: fix compilation error
MAINTAINERS: add PCDP console maintainer
memcg: do not open code accesses to res_counter members
drivers/rtc/rtc-efi.c: fix section mismatch warning
drivers/rtc/rtc-r9701.c: reset registers if invalid values are detected
drivers/char/random.c: fix boot id uniqueness race
memcg: fix broken boolen expression
memcg: fix up documentation on global LRU
Pull networking fixes from David Miller:
1) Fix bluetooth userland regression reported by Keith Packard, from
Gustavo Padovan.
2) Revert ath9k PS idle change, from Sujith Manoharan.
3) Correct default TCP memory limits (again), from Eric Dumazet.
4) Fix tcp_rcv_rtt_update() accidental use of unscaled RTT, from Neal
Cardwell.
5) We made a facility for layers like wireless to say how much tailroom
they need in the SKB for link layer stuff such as wireless
encryption etc., but TCP works hard to fill every SKB out to the end
defeating this specification.
This leads to every TCP packet getting reallocated by the wireless
code in order to have the right amount of tailroom available.
Fix TCP to only fill SKBs out to the real amount of data area it
asked for during the allocation, this way it won't eat into the
slack added for the device's tailroom needs.
Reported by Marc Merlin and fixed by Eric Dumazet.
6) Leaks, endian bugs, and new device IDs in bluetooth from Santosh
Nayak, João Paulo Rechi Vita, Cho, Yu-Chen, Andrei Emeltchenko,
AceLan Kao, and Andrei Emeltchenko.
7) OOPS on tty_close fix in bluetooth's hci_ldisc from Johan Hovold.
8) netfilter erroneously scales TCP window twice, fix from Changli Gao.
9) Memleak fix in wext-core from Julia Lawall.
10) Consistently handle invalid TCP packets in ipv4 vs. ipv6 conntrack,
from Jozsef Kadlecsik.
11) Validate IP header length properly in netfilter conntrack's
ipv4_get_l4proto().
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (39 commits)
NFC: Fix the LLCP Tx fragmentation loop
rtlwifi: Add missing DMA buffer unmapping for PCI drivers
rtlwifi: Preallocate USB read buffers and eliminate kalloc in read routine
tcp: avoid order-1 allocations on wifi and tx path
net: allow pskb_expand_head() to get maximum tailroom
bridge: Do not send queries on multicast group leaves
MAINTAINERS: Mark NATSEMI driver as orphan'd.
tcp: fix tcp_rcv_rtt_update() use of an unscaled RTT sample
tcp: restore correct limit
Revert "ath9k: fix going to full-sleep on PS idle"
rt2x00: Fix rfkill_polling register function.
bcma: fix build error on MIPS; implicit pcibios_enable_device
netfilter: nf_conntrack: fix incorrect logic in nf_conntrack_init_net
netfilter: nf_ct_ipv4: packets with wrong ihl are invalid
netfilter: nf_ct_ipv4: handle invalid IPv4 and IPv6 packets consistently
net/wireless/wext-core.c: add missing kfree
rtlwifi: Fix oops on rate-control failure
mac80211: Convert WARN_ON to WARN_ON_ONCE
rtlwifi: rtl8192de: Fix firmware initialization
nl80211: ensure interface is up in various APIs
...
Pull drm fixes from Dave Airlie:
"Mostly exynos and intel.
Intel has 3 regression fixers (more info in intel merge commit), along
with some other make hw work fixes, exynos has some cleanups and an
ioctl fix.
A couple of radeon fixes, couple of build fixes, and a savage
userspace interface possible overflow fix."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (23 commits)
drm/exynos: fixed exynos broken ioctl
drm/i915: clear fencing tracking state when retiring requests
drm/exynos: fix to pointer manager member of struct exynos_drm_subdrv
drm/exynos: fix struct for operation callback functions to driver name
drm/exynos: use define instead of default_win member in struct mixer_context
drm/exynos: rename s/HDMI_OVERLAY_NUMBER/MIXER_WIN_NR
drm/exynos: remove unused codes in hdmi and mixer
drm/exynos: remove unnecessary type conversion of hdmi and mixer
drm/i915: make rc6 module parameter read-only
drm/i915: implement ColorBlt w/a
drm/i915/ringbuffer: Exclude last 2 cachlines of ring on 845g
Revert "drm/i915: reenable gmbus on gen3+ again"
drm/radeon: only add the mm i2c bus if the hw_i2c module param is set
vgaarb.h: fix build warnings
drm/i915: properly compute dp dithering for user-created modes
drm/radeon/kms: fix DVO setup on some r4xx chips
drm/savage: fix integer overflows in savage_bci_cmdbuf()
drm/radeon: replace udelay with mdelay for long timeouts
drm/i915: Finish any pending operations on the framebuffer before disabling
drm/i915: Removed IVB forced enable of sprite dest key.
...
Two are tagged for -stable. They can cause an oops, but very rarely.
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Merge tag 'md-3.4-fixes' of git://neil.brown.name/md
Pull a few more fixes for md from NeilBrown:
"Two are tagged for -stable. They can cause an oops, but very rarely."
* tag 'md-3.4-fixes' of git://neil.brown.name/md:
md/bitmap: prevent bitmap_daemon_work running while initialising bitmap
md/raid1,raid10: Fix calculation of 'vcnt' when processing error recovery.
MD: Bitmap version cleanup.
Commit 6e6f0a1f0f ("panic: don't print redundant backtraces on oops")
causes a regression where no stack trace will be printed at all for the
case where kernel code calls panic() directly while not processing an
oops, and of course there are 100's of instances of this type of call.
The original commit executed the check (!oops_in_progress), but this will
always be false because just before the dump_stack() there is a call to
bust_spinlocks(1), which does the following:
void __attribute__((weak)) bust_spinlocks(int yes)
{
if (yes) {
++oops_in_progress;
The proper way to resolve the problem that original commit tried to
solve is to avoid printing a stack dump from panic() when the either of
the following conditions is true:
1) TAINT_DIE has been set (this is done by oops_end())
This indicates and oops has already been printed.
2) oops_in_progress > 1
This guards against the rare case where panic() is invoked
a second time, or in between oops_begin() and oops_end()
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: <stable@vger.kernel.org> [3.3+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The ST variants of the PL031 all require bit 26 in the control register
to be set before they work properly. Discovered this when testing on
the Nomadik board where it would suprisingly just stand still.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Cc: Alessandro Rubini <rubini@unipv.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit c38446cc65.
Before the commit, the code makes senses to me but not after the commit.
The "nr_reclaimed" is the number of pages reclaimed by scanning through
the memcg's lru lists. The "nr_to_reclaim" is the target value for the
whole function. For example, we like to early break the reclaim if
reclaimed 32 pages under direct reclaim (not DEF_PRIORITY).
After the reverted commit, the target "nr_to_reclaim" is decremented each
time by "nr_reclaimed" but we still use it to compare the "nr_reclaimed".
It just doesn't make sense to me...
Signed-off-by: Ying Han <yinghan@google.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The race is as follows:
Suppose a multi-threaded task forks a new process (on cpu A), thus
bumping up the ref count on all the pages. While the fork is occurring
(and thus we have marked all the PTEs as read-only), another thread in
the original process (on cpu B) tries to write to a huge page, taking an
access violation from the write-protect and calling hugetlb_cow(). Now,
suppose the fork() fails. It will undo the COW and decrement the ref
count on the pages, so the ref count on the huge page drops back to 1.
Meanwhile hugetlb_cow() also decrements the ref count by one on the
original page, since the original address space doesn't need it any
more, having copied a new page to replace the original page. This
leaves the ref count at zero, and when we call unlock_page(), we panic.
fork on CPU A fault on CPU B
============= ==============
...
down_write(&parent->mmap_sem);
down_write_nested(&child->mmap_sem);
...
while duplicating vmas
if error
break;
...
up_write(&child->mmap_sem);
up_write(&parent->mmap_sem); ...
down_read(&parent->mmap_sem);
...
lock_page(page);
handle COW
page_mapcount(old_page) == 2
alloc and prepare new_page
...
handle error
page_remove_rmap(page);
put_page(page);
...
fold new_page into pte
page_remove_rmap(page);
put_page(page);
...
oops ==> unlock_page(page);
up_read(&parent->mmap_sem);
The solution is to take an extra reference to the page while we are
holding the lock on it.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
RTC stores time and date in several registers. Due to the fact that
these registers can't be read instantaneously, there is a chance that
reading from counting registers gives an error of one minute, one hour,
one day, etc.
To address this issue, the RTC has hardware support to copy the RTC
counting registers to static shadowed registers. The current
implementation does not use this feature, and in a stress test, we can
reproduce this error at a rate of around two times per 300000 readings.
Fix the implementation to ensure that the right snapshot of time is
captured.
Signed-off-by: Konstantin Shlyakhovoy <x0155534@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: linux-omap <linux-omap@vger.kernel.org>
Acked-by: Mykola Oleksiienko <x0174904@ti.com>
Acked-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@ti.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Driver data field is a pointer, hence assigning that to an integer results
in compilation warnings.
Fixes following compilation warnings:
drivers/rtc/rtc-s3c.c: In function `s3c_rtc_get_driver_data':
drivers/rtc/rtc-s3c.c:452:3: warning: return makes integer from pointer without a cast [enabled by default]
drivers/rtc/rtc-s3c.c: At top level:
drivers/rtc/rtc-s3c.c:674:3: warning: initialization makes pointer from integer without a cast [enabled by default]
drivers/rtc/rtc-s3c.c:674:3: warning: (near initialization for `s3c_rtc_dt_match[1].data') [enabled by default]
drivers/rtc/rtc-s3c.c:677:3: warning: initialization makes pointer from integer without a cast [enabled by default]
drivers/rtc/rtc-s3c.c:677:3: warning: (near initialization for `s3c_rtc_dt_match[2].data') [enabled by default]
drivers/rtc/rtc-s3c.c:680:3: warning: initialization makes pointer from integer without a cast [enabled by default]
drivers/rtc/rtc-s3c.c:680:3: warning: (near initialization for `s3c_rtc_dt_match[3].data') [enabled by default]
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix this error:
drivers/rtc/rtc-s3c.c: At top level:
drivers/rtc/rtc-s3c.c:671:3: error: request for member `data' in something not a structure or union
drivers/rtc/rtc-s3c.c:674:3: error: request for member `data' in something not a structure or union
drivers/rtc/rtc-s3c.c:677:3: error: request for member `data' in something not a structure or union
drivers/rtc/rtc-s3c.c:680:3: error: request for member `data' in something not a structure or union
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add missing maintainer info for PCDP console code.
Signed-off-by: Khalid Aziz <khalid.aziz@hp.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We should use the accessor res_counter_read_u64 for that.
Although a purely cosmetic change is sometimes better delayed, to avoid
conflicting with other people's work, we are starting to have people
touching this code as well, and reproducing the open code behavior
because that's the standard =)
Time to fix it, then.
Signed-off-by: Glauber Costa <glommer@parallels.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
