platform/kernel/linux-stable.git
10 years agomei: fix syntax in comments and debug output
Alexander Usyskin [Wed, 8 Jan 2014 20:31:46 +0000 (22:31 +0200)]
mei: fix syntax in comments and debug output

Fix syntax errors in comments and debug strings

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomei: nfc: mei_nfc_free has to be called under lock
Tomas Winkler [Wed, 8 Jan 2014 18:57:44 +0000 (20:57 +0200)]
mei: nfc: mei_nfc_free has to be called under lock

nfc_nfc_free unlink clients from the device list
and has to be called under mei mutex

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomei: use hbm idle state to prevent spurious resets
Tomas Winkler [Wed, 8 Jan 2014 18:19:22 +0000 (20:19 +0200)]
mei: use hbm idle state to prevent spurious resets

When reset is caused by hbm protocol mismatch or timeout
we might end up in an endless reset loop and hbm protocol
will never sync

Cc: <stable@vger.kernel.org>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomei: do not run reset flow from the interrupt thread
Tomas Winkler [Wed, 8 Jan 2014 18:19:21 +0000 (20:19 +0200)]
mei: do not run reset flow from the interrupt thread

This fixes a potential deadlock in case of a firmware
initiated reset

mei_reset has a dialog with the interrupt thread hence
it has to be run from an another work item

Most of the mei_resets were called from mei_hbm_dispatch
which is called in interrupt thread context so this
function underwent major revamp. The error code is
propagated to the interrupt thread and if needed
the reset is scheduled from there.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomisc: genwqe: fix return value check in genwqe_device_create()
Wei Yongjun [Tue, 7 Jan 2014 08:56:35 +0000 (16:56 +0800)]
misc: genwqe: fix return value check in genwqe_device_create()

In case of error, the function device_create_with_groups()
returns ERR_PTR() and never returns NULL. The NULL test in
the return value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE: Fix warnings for sparc
Frank Haverkamp [Tue, 7 Jan 2014 14:41:25 +0000 (15:41 +0100)]
GenWQE: Fix warnings for sparc

dma_addr_t was not used, where it should have been used.
Some format strings were not optimal.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE: Fix compile problems for Alpha
Frank Haverkamp [Tue, 7 Jan 2014 14:41:24 +0000 (15:41 +0100)]
GenWQE: Fix compile problems for Alpha

The header which contained the declaration for kcalloc() was not
inlcuded.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoDocumentation/misc-devices/mei/mei-amt-version.c: remove unneeded call of mei_deinit()
Paul Bolle [Fri, 3 Jan 2014 22:44:19 +0000 (14:44 -0800)]
Documentation/misc-devices/mei/mei-amt-version.c: remove unneeded call of mei_deinit()

Building mei-amt-version.o triggers a GCC warning:
    Documentation/misc-devices/mei/mei-amt-version.c: In function 'main':
    Documentation/misc-devices/mei/mei-amt-version.c:103:5: warning: 'acmd.fd' is used uninitialized in this function [-Wuninitialized]
      if (cl->fd != -1)
         ^
    Documentation/misc-devices/mei/mei-amt-version.c:443:21: note: 'acmd.fd' was declared here
      struct amt_host_if acmd;
                         ^

GCC is correct. See, the call chain that GCC detects must be
    main()
        amt_host_if_init()
            mei_init()
                mei_deinit()

But when we enter mei_deinit() struct amt_host_if acmd is still
unitialized. That makes the test for (effectively) amt_host_if->mei_cl->fd
bogus.

But it turns out that call of mei_deinit() isn't needed at all. All of
the members of mei_cl will be set later in mei_init() and none will be
used before they are set. So we can simply drop this call of
mei_deinit().

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Reported-by: David Howells <dhowells@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE: Rework return code for flash-update ioctl
Frank Haverkamp [Sun, 22 Dec 2013 13:16:36 +0000 (14:16 +0100)]
GenWQE: Rework return code for flash-update ioctl

Instead of remaining bytes of a failing copy_to_user, the flash-update
ioctl is returning now -EFAULT. In addtion Dan discovered user triggerable
dev_errs(). Those I removed now from card_dev.c too. Some dev_infos()
were deleted and some others turned into dev_dbgs().

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agosgi-xp: open-code interruptible_sleep_on_timeout
Arnd Bergmann [Thu, 2 Jan 2014 12:07:52 +0000 (13:07 +0100)]
sgi-xp: open-code interruptible_sleep_on_timeout

interruptible_sleep_on_timeout is deprecated and going away soon.
The use in the sgi-xp driver leaves me puzzled, so I'd prefer not
to touch it. This patch replaces it with an open-coded prepare_to_wait
and finish_wait pair, which should be completely equivalent, so it
doesn't fix an existing race, but lets us get away with removing
the function so we can not get any new users.

In order to remove the typical sleep_on race, one would have to
replace the call with wait_event_interruptible_timeout and add
a condition to wait for. The fact that there is a one-jiffy timeout
suggests that we don't actually expect to get woken up properly
and the caller just uses this as a short sleeping function
if it doesn't wake up properly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Cliff Whickman <cpw@sgi.com>
Acked-by: Robin Holt <robinmholt@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE: Accidently casting to u32 where u64 is required
Frank Haverkamp [Fri, 20 Dec 2013 19:27:20 +0000 (20:27 +0100)]
GenWQE: Accidently casting to u32 where u64 is required

Fix a casting to u32 where u64 would be appropriate.
The bad casting made the driver unusable.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agouio: fix devm_request_irq usage
Aaro Koskinen [Fri, 20 Dec 2013 14:19:47 +0000 (16:19 +0200)]
uio: fix devm_request_irq usage

Commit e6789cd3dfb553077606ccafeb05e0043f072481 (uio: Simplify uio error
path by using devres functions) converted uio to use devm_request_irq().
This introduced a change in behaviour since the IRQ is associated with
the parent device instead of the created UIO device. The IRQ will remain
active after uio_unregister_device() is called, and some drivers will
crash because of this. The patch fixes this.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com>
Cc: stable <stable@vger.kernel.org> # 3.13
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE: Replace dynamic_hex_dump with print_hex_dump_debug
Frank Haverkamp [Fri, 20 Dec 2013 15:26:11 +0000 (16:26 +0100)]
GenWQE: Replace dynamic_hex_dump with print_hex_dump_debug

As requested by Greg, replacing the hexdump function from dynamic_debug.h
with one defined in printk.h. I hope I picked the right one.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE: Fix endian issues detected by sparse
Frank Haverkamp [Fri, 20 Dec 2013 15:26:10 +0000 (16:26 +0100)]
GenWQE: Fix endian issues detected by sparse

Fengguang Wu used CF=-D__CHECK_ENDIAN__ to check the GenWQE driver for
endian issues. Sparse found a couple of those. Most of them were caused
by not correctly handling __be64/32 and __u64/32. Those I was able to
fix with appropriate castings.

One more serious issue was the ATS entry in struct genwqe_ddcb_cmd.
The kernel expected it in big-endian, but the type was defined __u64.
I decided that it is better to keep the interface consistent using
host endian byte-odering instead of having a mixture. With this change
the kernel likes to see host endian byte order for the ATS entry. That
would have been an interface change, if someone would have used the
driver already. Since this is not the case, I hope it is ok to fix it
now.

For the genqwe_readq/writeq/readl/writel functions I enforced the casts.

It still complains, as far as I can see, about some copy_to/from_user()
usages:

  CHECK   char-misc/drivers/misc/genwqe/card_dev.c
char-misc/arch/x86/include/asm/uaccess.h:625:18: warning: incorrect type in argument 1 (different modifiers)
char-misc/arch/x86/include/asm/uaccess.h:625:18:    expected void *<noident>
char-misc/arch/x86/include/asm/uaccess.h:625:18:    got void const *from
char-misc/arch/x86/include/asm/uaccess.h:625:18: warning: incorrect type in argument 1 (different modifiers)
char-misc/arch/x86/include/asm/uaccess.h:625:18:    expected void *<noident>
char-misc/arch/x86/include/asm/uaccess.h:625:18:    got void const *from
char-misc/arch/x86/include/asm/uaccess.h:625:18: warning: incorrect type in argument 1 (different modifiers)
char-misc/arch/x86/include/asm/uaccess.h:625:18:    expected void *<noident>
char-misc/arch/x86/include/asm/uaccess.h:625:18:    got void const *from
char-misc/arch/x86/include/asm/uaccess.h:625:18: warning: incorrect type in argument 1 (different modifiers)
char-misc/arch/x86/include/asm/uaccess.h:625:18:    expected void *<noident>
char-misc/arch/x86/include/asm/uaccess.h:625:18:    got void const *from
  CC [M]  drivers/misc/genwqe/card_dev.o
  CHECK   char-misc/drivers/misc/genwqe/card_ddcb.c
char-misc/arch/x86/include/asm/uaccess.h:625:18: warning: incorrect type in argument 1 (different modifiers)
char-misc/arch/x86/include/asm/uaccess.h:625:18:    expected void *<noident>
char-misc/arch/x86/include/asm/uaccess.h:625:18:    got void const *from
char-misc/arch/x86/include/asm/uaccess.h:625:18: warning: incorrect type in argument 1 (different modifiers)
char-misc/arch/x86/include/asm/uaccess.h:625:18:    expected void *<noident>
char-misc/arch/x86/include/asm/uaccess.h:625:18:    got void const *from
  CC [M]  drivers/misc/genwqe/card_ddcb.o
  LD [M]  drivers/misc/genwqe/genwqe_card.o

I appreciate some help from you to figure out what is causig those, and
making a proposal how to fix them.

I included the missing header file to fix the
implicit-function-declaration warning when using dynamic_hex_dump.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE Enable driver
Frank Haverkamp [Mon, 9 Dec 2013 12:30:44 +0000 (13:30 +0100)]
GenWQE Enable driver

Enable possiblity to configure and build this driver.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Co-authors: Joerg-Stephan Vogt <jsvogt@de.ibm.com>,
            Michael Jung <MIJUNG@de.ibm.com>,
            Michael Ruettger <michael@ibmra.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE Sysfs interfaces
Frank Haverkamp [Mon, 9 Dec 2013 12:30:43 +0000 (13:30 +0100)]
GenWQE Sysfs interfaces

Sysfs interfaces for the GenWQE card. There are attributes to query
the version of the bitstream as well as some for the driver. For
debugging, please also see the debugfs interfaces of this driver.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Co-authors: Joerg-Stephan Vogt <jsvogt@de.ibm.com>,
            Michael Jung <MIJUNG@de.ibm.com>,
            Michael Ruettger <michael@ibmra.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE Debugfs interfaces
Frank Haverkamp [Mon, 9 Dec 2013 12:30:42 +0000 (13:30 +0100)]
GenWQE Debugfs interfaces

Debugfs interfaces for the GenWQE card. Help to debug potential
problems. Dump internal chip state for debugging and failure
determination.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Co-authors: Joerg-Stephan Vogt <jsvogt@de.ibm.com>,
            Michael Jung <MIJUNG@de.ibm.com>,
            Michael Ruettger <michael@ibmra.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE Utility functions
Frank Haverkamp [Mon, 9 Dec 2013 12:30:41 +0000 (13:30 +0100)]
GenWQE Utility functions

Miscelanous functionality used in the other GenWQE driver parts.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Co-authors: Joerg-Stephan Vogt <jsvogt@de.ibm.com>,
            Michael Jung <MIJUNG@de.ibm.com>,
            Michael Ruettger <michael@ibmra.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE Character device and DDCB queue
Frank Haverkamp [Mon, 9 Dec 2013 12:30:40 +0000 (13:30 +0100)]
GenWQE Character device and DDCB queue

The GenWQE card itself provides access to a generic work queue into
which the work can be put, which should be executed, e.g. compression
or decompression request, or whatever the card was configured to do.

Each request comes with a set of input data (ASV) and will produce some
output data (ASIV). The request will also contain a sequence number,
some timestamps and a command code/subcode plus some fields for hardware-/
software-interaction.

A request can contain references to blocks of memory. Since the card
requires DMA-addresses of that memory, the driver provides two ways to
solve that task:
  1) The drivers mmap() will allocate some DMAable memory for the user.
     The driver has a lookup table such that the virtual userspace
     address can properly be replaced and checked.
  2) The user allocates memory and the driver will pin/unpin that
     memory and setup a scatter gatherlist with matching DMA addresses.

Currently work requests are synchronous.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Co-authors: Joerg-Stephan Vogt <jsvogt@de.ibm.com>,
            Michael Jung <MIJUNG@de.ibm.com>,
            Michael Ruettger <michael@ibmra.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoGenWQE PCI support, health monitoring and recovery
Frank Haverkamp [Mon, 9 Dec 2013 12:30:39 +0000 (13:30 +0100)]
GenWQE PCI support, health monitoring and recovery

Module initialization and PCIe setup. Card health monitoring and
recovery functionality. Character device creation and deletion are
controlled from here.

Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Co-authors: Joerg-Stephan Vogt <jsvogt@de.ibm.com>,
            Michael Jung <MIJUNG@de.ibm.com>,
            Michael Ruettger <michael@ibmra.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Implement hwmon based fan speed control
Guenter Roeck [Sat, 14 Dec 2013 17:30:21 +0000 (09:30 -0800)]
i8k: Implement hwmon based fan speed control

Fan speed can be set to off, slow, and fast, which can be exported
to userspace through the hwmon ABI as pwm1 / pwm2.

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Stop reading SMM BIOS version during driver probe
Guenter Roeck [Sat, 14 Dec 2013 17:30:20 +0000 (09:30 -0800)]
i8k: Stop reading SMM BIOS version during driver probe

This doesn't work on Studio, XPS, Vostro, and Precision laptops,
and it doesn't provide any value except to cause confusion when
it does not work. Drop it and always use DMI BIOS version instead.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Use driver_data field of dmi_system_id to override fan multiplier
Guenter Roeck [Sat, 14 Dec 2013 17:30:19 +0000 (09:30 -0800)]
i8k: Use driver_data field of dmi_system_id to override fan multiplier

At least on Studio 1555 and XPS M140, the fan speed is reported directly,
not with the default speed multiplier of 30. Information on the web
suggests that this may be true for other models as well, though it is
unknown at this time which systems may be affected.

Use the driver_data field of dmi_system_id to override the default fan
multiplier value for the two systems known to use a multiplier of 1.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Add support for Dell XPS M140
Guenter Roeck [Sat, 14 Dec 2013 17:30:18 +0000 (09:30 -0800)]
i8k: Add support for Dell XPS M140

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Add support for Dell Studio laptops
Guenter Roeck [Sat, 14 Dec 2013 17:30:17 +0000 (09:30 -0800)]
i8k: Add support for Dell Studio laptops

Tested with Dell Studio 1555.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Add copyright
Guenter Roeck [Sat, 14 Dec 2013 17:30:16 +0000 (09:30 -0800)]
i8k: Add copyright

I made enough changes to the driver to warrant adding a copyright notice.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Force SMM to run on CPU 0
Guenter Roeck [Sat, 14 Dec 2013 17:30:15 +0000 (09:30 -0800)]
i8k: Force SMM to run on CPU 0

On Studio 1555 with dual-core CPU, reading sensor attributes
exported by this driver resulted in random failures combined
with system hangups and forced logouts. Information in
drivers/firmware/dcdbas.c suggests that SMM accesses must
run on CPU 0. With this patch, the problems are gone,
suggesting that this is in fact the case.

Code derived from drivers/firmware/dcdbas.c.

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Drop driver version number and info message at startup
Guenter Roeck [Sat, 14 Dec 2013 17:30:14 +0000 (09:30 -0800)]
i8k: Drop driver version number and info message at startup

The driver version number is long since obsolete, so drop it.
Also, drop the info message at driver startup to reduce boot noise.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Remove obsolete link to out-of-tree driver
Guenter Roeck [Sat, 14 Dec 2013 17:30:13 +0000 (09:30 -0800)]
i8k: Remove obsolete link to out-of-tree driver

Accessing the link returns a page not found error.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoMAINTAINERS: Add myself as i8k maintainer
Guenter Roeck [Sat, 14 Dec 2013 17:30:12 +0000 (09:30 -0800)]
MAINTAINERS: Add myself as i8k maintainer

I have a couple of Dell laptops running Linux, so I have a vested
interest to keep this driver supported.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Support additional temperature sensors
Guenter Roeck [Sat, 14 Dec 2013 17:30:11 +0000 (09:30 -0800)]
i8k: Support additional temperature sensors

The SMM API suggests that more than one temperature sensor is supported,
so add support for them. Currently only supported for hwmon interface.

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Convert to use to hwmon_device_register_with_groups hwmon API
Guenter Roeck [Sat, 14 Dec 2013 17:30:10 +0000 (09:30 -0800)]
i8k: Convert to use to hwmon_device_register_with_groups hwmon API

Simplify code and fix race condition caused by registering
hwmon device prior to creating sysfs attributes.

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Fix various checkpatch warnings and errors
Guenter Roeck [Sat, 14 Dec 2013 17:30:09 +0000 (09:30 -0800)]
i8k: Fix various checkpatch warnings and errors

Fix:
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
WARNING: __packed is preferred over __attribute__((packed))
WARNING: externs should be avoided in .c files
ERROR: spaces required around that ':' (ctx:ExV)
ERROR: do not use assignment in if condition
WARNING: line over 80 characters
WARNING: __initdata should be placed after i8k_dmi_table[]
ERROR: code indent should use tabs where possible
WARNING: please, no spaces at the start of a line

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoi8k: Convert to use pr_ functions instead of printk
Guenter Roeck [Sat, 14 Dec 2013 17:30:08 +0000 (09:30 -0800)]
i8k: Convert to use pr_ functions instead of printk

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agodrivers: hv: Mark the function hv_synic_free_cpu() as static in hv.c
Rashika Kheria [Sat, 14 Dec 2013 13:30:06 +0000 (19:00 +0530)]
drivers: hv: Mark the function hv_synic_free_cpu() as static in hv.c

This patch marks the function hv_synic_free_cpu() as static in hv.c
because it is not used outside this file.

Thus, it also eliminates the following warning in hv.c:
drivers/hv/hv.c:304:6: warning: no previous prototype for â€˜hv_synic_free_cpu’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agodrivers: misc: Mark functions as static in ad525x_dpot.c
Rashika Kheria [Fri, 13 Dec 2013 06:57:10 +0000 (12:27 +0530)]
drivers: misc: Mark functions as static in ad525x_dpot.c

This patch marks the function ad_dpot_add_files() and
ad_dpot_remove_files() as static in ad525x_dpot.c because they are not
used outside this file.

Thus, it also eliminates the following warnings in ad525x_dpot.c:
drivers/misc/ad525x_dpot.c:644:5: warning: no previous prototype for â€˜ad_dpot_add_files’ [-Wmissing-prototypes]
drivers/misc/ad525x_dpot.c:669:13: warning: no previous prototype for â€˜ad_dpot_remove_files’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agodrivers: misc: Mark function jp_generic_ide_ioctl() as static in lkdtm.c
Rashika Kheria [Fri, 13 Dec 2013 06:59:42 +0000 (12:29 +0530)]
drivers: misc: Mark function jp_generic_ide_ioctl() as static in lkdtm.c

This patch marks the function jp_generic_ide_ioctl() as static in
lkdtm.c because it is not used outside this file.

Thus, it also eliminates the following warnings in lkdtm.c:
drivers/misc/lkdtm.c:227:5: warning: no previous prototype for â€˜jp_generic_ide_ioctl’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomei: me: set dma mask using DMA mapping API
Tomas Winkler [Tue, 17 Dec 2013 13:56:57 +0000 (15:56 +0200)]
mei: me: set dma mask using DMA mapping API

ME device is 64bit DMA capable
We assume both coherent and consistent memory to match

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomei: enable marking internal commands
Tomas Winkler [Tue, 17 Dec 2013 13:56:56 +0000 (15:56 +0200)]
mei: enable marking internal commands

Set hbm header bit 30 for internal commands
This mark commands that are generated by
the device driver

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agodrivers/misc: atmel-ssc: document clock properties
Boris BREZILLON [Tue, 17 Dec 2013 15:01:47 +0000 (16:01 +0100)]
drivers/misc: atmel-ssc: document clock properties

Document the clock properties required by the atmel-ssc driver.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agodrivers/misc: atmel_tclib: document clock properties
Boris BREZILLON [Tue, 17 Dec 2013 15:47:14 +0000 (16:47 +0100)]
drivers/misc: atmel_tclib: document clock properties

Document the clock properties required by the atmel_tclib driver.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agochar: Int overflow in lp_do_ioctl().
Yongjian Xu [Wed, 18 Dec 2013 07:45:12 +0000 (15:45 +0800)]
char: Int overflow in lp_do_ioctl().

arg comes from user-space, so int overflow may occur:
LP_TIME(minor) = arg * HZ/100;

Reported-by: Yongjian Xu <xuyongjiande@gmail.com>
Suggested-by: Qixue Xiao <s2exqx@gmail.com>
Signed-off-by: Yu Chen <chyyuu@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoMerge 3.13-rc4 into char-misc-next
Greg Kroah-Hartman [Tue, 17 Dec 2013 00:11:28 +0000 (16:11 -0800)]
Merge 3.13-rc4 into char-misc-next

We want these fixes in here.

10 years agoLinux 3.13-rc4 v3.13-rc4
Linus Torvalds [Sun, 15 Dec 2013 20:31:33 +0000 (12:31 -0800)]
Linux 3.13-rc4

10 years agonull_blk: mem garbage on NUMA systems during init
Matias Bjorling [Tue, 10 Dec 2013 15:50:38 +0000 (16:50 +0100)]
null_blk: mem garbage on NUMA systems during init

For NUMA systems, initializing the blk-mq layer and using per node hctx.
We initialize submit queues to 1, while blk-mq nr_hw_queues is
initialized to the number of NUMA nodes.

This makes the null_init_hctx function overwrite memory outside of what
it allocated.  In my case it lead to writing garbage into struct
request_queue's mq_map.

Signed-off-by: Matias Bjorling <m@bjorling.me>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoradeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()
Sergey Senozhatsky [Thu, 12 Dec 2013 23:25:57 +0000 (02:25 +0300)]
radeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()

Since commit ec39f64bba34 ("drm/radeon/dpm: Convert to use
devm_hwmon_register_with_groups") radeon_hwmon_init() is using
hwmon_device_register_with_groups(), which sets `rdev' as a device
private driver_data, while hwmon_attributes_visible() and
radeon_hwmon_show_temp_thresh() are still waiting for `drm_device'.

Fix them by using dev_get_drvdata(), in order to avoid this oops:

  BUG: unable to handle kernel paging request at 0000000000001e28
  IP: [<ffffffffa02ae8b4>] hwmon_attributes_visible+0x18/0x3d [radeon]
  PGD 15057e067 PUD 151a8e067 PMD 0
  Oops: 0000 [#1] PREEMPT SMP
  Call Trace:
    internal_create_group+0x114/0x1d9
    sysfs_create_group+0xe/0x10
    sysfs_create_groups+0x22/0x5f
    device_add+0x34f/0x501
    device_register+0x15/0x18
    hwmon_device_register_with_groups+0xb5/0xed
    radeon_hwmon_init+0x56/0x7c [radeon]
    radeon_pm_init+0x134/0x7e5 [radeon]
    radeon_modeset_init+0x75f/0x8ed [radeon]
    radeon_driver_load_kms+0xc6/0x187 [radeon]
    drm_dev_register+0xf9/0x1b4 [drm]
    drm_get_pci_dev+0x98/0x129 [drm]
    radeon_pci_probe+0xa3/0xac [radeon]
    pci_device_probe+0x6e/0xcf
    driver_probe_device+0x98/0x1c4
    __driver_attach+0x5c/0x7e
    bus_for_each_dev+0x7b/0x85
    driver_attach+0x19/0x1b
    bus_add_driver+0x104/0x1ce
    driver_register+0x89/0xc5
    __pci_register_driver+0x58/0x5b
    drm_pci_init+0x86/0xea [drm]
    radeon_init+0x97/0x1000 [radeon]
    do_one_initcall+0x7f/0x117
    load_module+0x1583/0x1bb4
    SyS_init_module+0xa0/0xaf

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Alexander Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sun, 15 Dec 2013 19:56:47 +0000 (11:56 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Revert CHECKSUM_COMPLETE optimization in pskb_trim_rcsum(), I can't
    figure out why it breaks things.

 2) Fix comparison in netfilter ipset's hash_netnet4_data_equal(), it
    was basically doing "x == x", from Dave Jones.

 3) Freescale FEC driver was DMA mapping the wrong number of bytes, from
    Sebastian Siewior.

 4) Blackhole and prohibit routes in ipv6 were not doing the right thing
    because their ->input and ->output methods were not being assigned
    correctly.  Now they behave properly like their ipv4 counterparts.
    From Kamala R.

 5) Several drivers advertise the NETIF_F_FRAGLIST capability, but
    really do not support this feature and will send garbage packets if
    fed fraglist SKBs.  From Eric Dumazet.

 6) Fix long standing user triggerable BUG_ON over loopback in RDS
    protocol stack, from Venkat Venkatsubra.

 7) Several not so common code paths can potentially try to invoke
    packet scheduler actions that might be NULL without checking.  Shore
    things up by either 1) defining a method as mandatory and erroring
    on registration if that method is NULL 2) defininig a method as
    optional and the registration function hooks up a default
    implementation when NULL is seen.  From Jamal Hadi Salim.

 8) Fix fragment detection in xen-natback driver, from Paul Durrant.

 9) Kill dangling enter_memory_pressure method in cg_proto ops, from
    Eric W Biederman.

10) SKBs that traverse namespaces should have their local_df cleared,
    from Hannes Frederic Sowa.

11) IOCB file position is not being updated by macvtap_aio_read() and
    tun_chr_aio_read().  From Zhi Yong Wu.

12) Don't free virtio_net netdev before releasing all of the NAPI
    instances.  From Andrey Vagin.

13) Procfs entry leak in xt_hashlimit, from Sergey Popovich.

14) IPv6 routes that are no cached routes should not count against the
    garbage collection limits.  We had this almost right, but were
    missing handling addrconf generated routes properly.  From Hannes
    Frederic Sowa.

15) fib{4,6}_rule_suppress() have to consider potentially seeing NULL
    route info when they are called, from Stefan Tomanek.

16) TUN and MACVTAP have had truncated packet signalling for some time,
    fix from Jason Wang.

17) Fix use after frrr in __udp4_lib_rcv(), from Eric Dumazet.

18) xen-netback does not interpret the NAPI budget properly for TX work,
    fix from Paul Durrant.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (132 commits)
  igb: Fix for issue where values could be too high for udelay function.
  i40e: fix null dereference
  xen-netback: fix gso_prefix check
  net: make neigh_priv_len in struct net_device 16bit instead of 8bit
  drivers: net: cpsw: fix for cpsw crash when build as modules
  xen-netback: napi: don't prematurely request a tx event
  xen-netback: napi: fix abuse of budget
  sch_tbf: use do_div() for 64-bit divide
  udp: ipv4: must add synchronization in udp_sk_rx_dst_set()
  net:fec: remove duplicate lines in comment about errata ERR006358
  Revert "8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature"
  8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature
  xen-netback: make sure skb linear area covers checksum field
  net: smc91x: Fix device tree based configuration so it's usable
  udp: ipv4: fix potential use after free in udp_v4_early_demux()
  macvtap: signal truncated packets
  tun: unbreak truncated packet signalling
  net: sched: htb: fix the calculation of quantum
  net: sched: tbf: fix the calculation of max_size
  micrel: add support for KSZ8041RNLI
  ...

10 years agoMerge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Linus Torvalds [Sun, 15 Dec 2013 19:52:47 +0000 (11:52 -0800)]
Merge branch 'x86/urgent' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "This is a pretty small batch:

  The biggest single change is to stop using EFI time services on 32-bit
  platforms.  This matches our current behavior on 64-bit platforms as
  we already had ruled them out there as being too unreliable.  Turns
  out that affects 32-bit platforms, too.

  One NULL pointer fix for SGI UV.

  Two minor build fixes, one of which only affects icc and the other
  which affects icc and future versions or nonstandard default settings
  of gcc"

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, efi: Don't use (U)EFI time services on 32 bit
  x86, build, icc: Remove uninitialized_var() from compiler-intel.h
  x86/UV: Fix NULL pointer dereference in uv_flush_tlb_others() if the 'nobau' boot option is used
  x86, build: Pass in additional -mno-mmx, -mno-sse options

10 years agoMerge tag 'pci-v3.13-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Sun, 15 Dec 2013 19:45:27 +0000 (11:45 -0800)]
Merge tag 'pci-v3.13-fixes-2' of git://git./linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI device hotplug
    - Move device_del() from pci_stop_dev() to pci_destroy_dev() (Rafael
      Wysocki)

  Host bridge drivers
    - Update maintainers for DesignWare, i.MX6, Armada, R-Car (Bjorn
      Helgaas)
    - mvebu: Return 'unsupported' for Interrupt Line and Interrupt Pin
      (Jason Gunthorpe)

  Miscellaneous
    - Avoid unnecessary CPU switch when calling .probe() (Alexander
      Duyck)
    - Revert "workqueue: allow work_on_cpu() to be called recursively"
      (Bjorn Helgaas)
    - Disable Bus Master only on kexec reboot (Khalid Aziz)
    - Omit PCI ID macro strings to shorten quirk names for LTO (Michal
      Marek)"

* tag 'pci-v3.13-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  MAINTAINERS: Add DesignWare, i.MX6, Armada, R-Car PCI host maintainers
  PCI: Disable Bus Master only on kexec reboot
  PCI: mvebu: Return 'unsupported' for Interrupt Line and Interrupt Pin
  PCI: Omit PCI ID macro strings to shorten quirk names
  PCI: Move device_del() from pci_stop_dev() to pci_destroy_dev()
  Revert "workqueue: allow work_on_cpu() to be called recursively"
  PCI: Avoid unnecessary CPU switch when calling driver .probe() method

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Sun, 15 Dec 2013 19:28:02 +0000 (11:28 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security

Pull SELinux fixes from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  selinux: process labeled IPsec TCP SYN-ACK packets properly in selinux_ip_postroute()
  selinux: look for IPsec labels on both inbound and outbound packets
  selinux: handle TCP SYN-ACK packets correctly in selinux_ip_postroute()
  selinux: handle TCP SYN-ACK packets correctly in selinux_ip_output()
  selinux: fix possible memory leak

10 years agoRevert "selinux: consider filesystem subtype in policies"
Linus Torvalds [Sun, 15 Dec 2013 19:17:45 +0000 (11:17 -0800)]
Revert "selinux: consider filesystem subtype in policies"

This reverts commit 102aefdda4d8275ce7d7100bc16c88c74272b260.

Tom London reports that it causes sync() to hang on Fedora rawhide:

  https://bugzilla.redhat.com/show_bug.cgi?id=1033965

and Josh Boyer bisected it down to this commit.  Reverting the commit in
the rawhide kernel fixes the problem.

Eric Paris root-caused it to incorrect subtype matching in that commit
breaking fuse, and has a tentative patch, but by now we're better off
retrying this in 3.14 rather than playing with it any more.

Reported-by: Tom London <selinux@gmail.com>
Bisected-by: Josh Boyer <jwboyer@fedoraproject.org>
Acked-by: Eric Paris <eparis@redhat.com>
Cc: James Morris <jmorris@namei.org>
Cc: Anand Avati <avati@redhat.com>
Cc: Paul Moore <paul@paul-moore.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoigb: Fix for issue where values could be too high for udelay function.
Carolyn Wyborny [Sat, 14 Dec 2013 11:26:46 +0000 (03:26 -0800)]
igb: Fix for issue where values could be too high for udelay function.

This patch changes the igb_phy_has_link function to check the value of the
parameter before deciding to use udelay or mdelay in order to be sure that
the value is not too high for udelay function.

CC: stable kernel <stable@vger.kernel.org> # 3.9+
Signed-off-by: Sunil K Pandey <sunil.k.pandey@intel.com>
Signed-off-by: Kevin B Smith <kevin.b.smith@intel.com>
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: fix null dereference
Jesse Brandeburg [Sat, 14 Dec 2013 11:26:45 +0000 (03:26 -0800)]
i40e: fix null dereference

If the vsi->tx_rings structure is NULL we don't want to panic.

Change-Id: Ic694f043701738c434e8ebe0caf0673f4410dc10
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'edac_fixes_for_3.13' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 14 Dec 2013 17:37:17 +0000 (09:37 -0800)]
Merge tag 'edac_fixes_for_3.13' of git://git./linux/kernel/git/bp/bp

Pull EDAC fix from Borislav Petkov:
 "Silence a compiler warning in sb_edac"

* tag 'edac_fixes_for_3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  sb_edac: Shut up compiler warning when EDAC_DEBUG is enabled

10 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Sat, 14 Dec 2013 00:16:03 +0000 (16:16 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "This resolves some further issues with the dma mask changes on ARM
  which have been found by TI and others, and also some corner cases
  with the updates to the virtual to physical address translations.

  Konstantin also found some problems with the unwinder, which now
  performs tighter verification that the stack is valid while unwinding"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: fix asm/memory.h build error
  ARM: 7917/1: cacheflush: correctly limit range of memory region being flushed
  ARM: 7913/1: fix framepointer check in unwind_frame
  ARM: 7912/1: check stack pointer in get_wchan
  ARM: 7909/1: mm: Call setup_dma_zone() post early_paging_init()
  ARM: 7908/1: mm: Fix the arm_dma_limit calculation
  ARM: another fix for the DMA mapping checks

10 years agoMerge tag 'arc-fixes-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupt...
Linus Torvalds [Sat, 14 Dec 2013 00:14:39 +0000 (16:14 -0800)]
Merge tag 'arc-fixes-for-3.13' of git://git./linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 "These are couple of weeks old already, but I just couldn't get them to
  you earlier.

   - couple of fixes for recently added perf code
   - build time extable sort"

* tag 'arc-fixes-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: [perf] Fix a few thinkos
  ARC: Add guard macro to uapi/asm/unistd.h
  ARC: extable: Enable sorting at build time

10 years agoMerge tag 'dm-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Fri, 13 Dec 2013 21:22:22 +0000 (13:22 -0800)]
Merge tag 'dm-3.13-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:
 "A set of device-mapper fixes for 3.13.

  A fix for possible memory corruption during DM table load, fix a
  possible leak of snapshot space in case of a crash, fix a possible
  deadlock due to a shared workqueue in the delay target, fix to
  initialize read-only module parameters that are used to export metrics
  for dm stats and dm bufio.

  Quite a few stable fixes were identified for both the thin-
  provisioning and caching targets as a result of increased regression
  testing using the device-mapper-test-suite (dmts).  The most notable
  of these are the reference counting fixes for the space map btree that
  is used by the dm-array interface -- without these the dm-cache
  metadata will leak, resulting in dm-cache devices running out of
  metadata blocks.  Also, some important fixes related to the
  thin-provisioning target's transition to read-only mode on error"

* tag 'dm-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm array: fix a reference counting bug in shadow_ablock
  dm space map: disallow decrementing a reference count below zero
  dm stats: initialize read-only module parameter
  dm bufio: initialize read-only module parameters
  dm cache: actually resize cache
  dm cache: update Documentation for invalidate_cblocks's range syntax
  dm cache policy mq: fix promotions to occur as expected
  dm thin: allow pool in read-only mode to transition to read-write mode
  dm thin: re-establish read-only state when switching to fail mode
  dm thin: always fallback the pool mode if commit fails
  dm thin: switch to read-only mode if metadata space is exhausted
  dm thin: switch to read only mode if a mapping insert fails
  dm space map metadata: return on failure in sm_metadata_new_block
  dm table: fail dm_table_create on dm_round_up overflow
  dm snapshot: avoid snapshot space leak on crash
  dm delay: fix a possible deadlock due to shared workqueue

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Fri, 13 Dec 2013 21:21:28 +0000 (13:21 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

Pull HID fixes from Jiri Kosina:

 - Genius Gx Imperator Keyboard regression fix (missing break in case),
   by Ben Hutchings

 - duplicate sysfs entry error fix for hid-sensor-hub driver, by
   Srinivas Pandruvada

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: hid-sensor-hub: fix duplicate sysfs entry error
  HID: kye: Fix missing break in kye_report_fixup()

10 years agoARM: fix asm/memory.h build error
Russell King [Tue, 10 Dec 2013 19:21:08 +0000 (19:21 +0000)]
ARM: fix asm/memory.h build error

Jason Gunthorpe reports a build failure when ARM_PATCH_PHYS_VIRT is
not defined:

In file included from arch/arm/include/asm/page.h:163:0,
                 from include/linux/mm_types.h:16,
                 from include/linux/sched.h:24,
                 from arch/arm/kernel/asm-offsets.c:13:
arch/arm/include/asm/memory.h: In function '__virt_to_phys':
arch/arm/include/asm/memory.h:244:40: error: 'PHYS_OFFSET' undeclared (first use in this function)
arch/arm/include/asm/memory.h:244:40: note: each undeclared identifier is reported only once for each function it appears in
arch/arm/include/asm/memory.h: In function '__phys_to_virt':
arch/arm/include/asm/memory.h:249:13: error: 'PHYS_OFFSET' undeclared (first use in this function)

Fixes: ca5a45c06cd4 ("ARM: mm: use phys_addr_t appropriately in p2v and v2p conversions")
Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoMerge tag 'regulator-v3.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 13 Dec 2013 19:39:54 +0000 (11:39 -0800)]
Merge tag 'regulator-v3.13-rc3' of git://git./linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "A small set of driver fixes plus one larger core change which changes
  the way we check to see if we're using DT so that there aren't any
  races between deciding we're using DT and the regulator subsystem
  noticing.

  This makes the new support for substituting a dummy regulator and
  optional regulators work a lot better on DT systems since it ensures
  that we don't trigger probe deferral when we shouldn't which was
  causing bugs in clients"

* tag 'regulator-v3.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: pfuze100: allow misprogrammed ID
  regulator: pfuze100: Fix address of FABID
  regulator: as3722: set the correct current limit
  regulator: core: Check for DT every time we check full constraints
  regulator: core: Replace checks of have_full_constraints with a function

10 years agoMerge tag 'regmap-v3.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Fri, 13 Dec 2013 19:38:35 +0000 (11:38 -0800)]
Merge tag 'regmap-v3.13-rc3' of git://git./linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "Two small changes to fix some error handling and checking (both of
  which would be quite serious if the errors trigger) plus a trivial
  documentation fix"

* tag 'regmap-v3.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: use IS_ERR() to check clk_get() results
  regmap: make sure we unlock on failure in regmap_bulk_write
  regmap: trivial comment fix (copy'n'paste error)

10 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 13 Dec 2013 19:37:57 +0000 (11:37 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Here are two simple but wanted fixes for the i2c subsystem"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: imx: Check the return value from clk_prepare_enable()
  i2c: mux: Inherit retry count and timeout from parent for muxed bus

10 years agoMerge tag 'for-linus-20131212' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 13 Dec 2013 19:31:22 +0000 (11:31 -0800)]
Merge tag 'for-linus-20131212' of git://git.infradead.org/linux-mtd

Pull MTD fixes from Brian Norris:
 "Two MTD fixes, for the pxa3xx-nand driver:

   - This driver was not ready to fully Armada 370 NAND, with
     particularly notable problems seen on flash with 2KB page sizes.
     This "compatible" entry really should have been held back until
     3.14 or later.

   - Fix a bug seen in rare cases on the error path of a failed probe
     attempt, where we free unallocated DMA resources"

* tag 'for-linus-20131212' of git://git.infradead.org/linux-mtd:
  mtd: nand: pxa3xx: Use info->use_dma to release DMA resources
  Partially revert "mtd: nand: pxa3xx: Introduce 'marvell,armada370-nand' compatible string"

10 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 13 Dec 2013 19:29:51 +0000 (11:29 -0800)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "Here is the common fixes PULL for dmaengine.

  Dan has been working on fixing the build issues in bunch of drivers.
  Here we have one fixing s3c24xx-dma, along with fix from Russell on
  pl08x.  Also we have Kuninori rcar dma fixes.  The s3c24xx-dma which
  was added in last merge window missed updates to usage of DMA_COMPLETE
  so converting the last driver"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma: fix build breakage in s3c24xx-dma
  Fix pl08x warnings
  rcar-hpbdma: initialise plane information when halted
  rcar-hpbdma: fixup channel busy check for double plane
  rcar-hpbdma: add max transfer size
  dma: mmp_pdma: add missing platform_set_drvdata() in mmp_pdma_probe()
  dmaengine: s3c24xx-dma: use DMA_COMPLETE for dma completion status

10 years agodm array: fix a reference counting bug in shadow_ablock
Joe Thornber [Fri, 13 Dec 2013 14:55:55 +0000 (14:55 +0000)]
dm array: fix a reference counting bug in shadow_ablock

An old array block could have its reference count decremented below
zero when it is being replaced in the btree by a new array block.

The fix is to increment the old ablock's reference count just before
inserting a new ablock into the btree.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.9+
10 years agodm space map: disallow decrementing a reference count below zero
Joe Thornber [Fri, 13 Dec 2013 12:31:08 +0000 (12:31 +0000)]
dm space map: disallow decrementing a reference count below zero

The old behaviour, returning -EINVAL if a ref_count of 0 would be
decremented, was removed in commit f722063 ("dm space map: optimise
sm_ll_dec and sm_ll_inc").  To fix this regression we return an error
code from the mutator function pointer passed to sm_ll_mutate() and have
dec_ref_count() return -EINVAL if the old ref_count is 0.

Add a DMERR to reflect the potential seriousness of this error.

Also, add missing dm_tm_unlock() to sm_ll_mutate()'s error path.

With this fix the following dmts regression test now passes:
 dmtest run --suite cache -n /metadata_use_kernel/

The next patch fixes the higher-level dm-array code that exposed this
regression.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.12+
10 years agoMerge remote-tracking branch 'regulator/topic/constraints' into regulator-linus
Mark Brown [Fri, 13 Dec 2013 13:44:57 +0000 (13:44 +0000)]
Merge remote-tracking branch 'regulator/topic/constraints' into regulator-linus

10 years agoMerge branch 'master' of git://git.infradead.org/users/pcmoore/selinux_fixes into...
James Morris [Fri, 13 Dec 2013 02:27:55 +0000 (13:27 +1100)]
Merge branch 'master' of git://git.infradead.org/users/pcmoore/selinux_fixes into for-linus

10 years agoMerge branch 'akpm' (fixes from Andrew)
Linus Torvalds [Fri, 13 Dec 2013 02:22:10 +0000 (18:22 -0800)]
Merge branch 'akpm' (fixes from Andrew)

Merge patches from Andrew Morton:
  "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: memcg: do not allow task about to OOM kill to bypass the limit
  mm: memcg: fix race condition between memcg teardown and swapin
  thp: move preallocated PTE page table on move_huge_pmd()
  mfd/rtc: s5m: fix register updating by adding regmap for RTC
  rtc: s5m: enable IRQ wake during suspend
  rtc: s5m: limit endless loop waiting for register update
  rtc: s5m: fix unsuccesful IRQ request during probe
  drivers/rtc/rtc-s5m.c: fix info->rtc assignment
  include/linux/kernel.h: make might_fault() a nop for !MMU
  drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap
  procfs: also fix proc_reg_get_unmapped_area() for !MMU case
  mm: memcg: do not declare OOM from __GFP_NOFAIL allocations
  include/linux/hugetlb.h: make isolate_huge_page() an inline

10 years agomm: memcg: do not allow task about to OOM kill to bypass the limit
Johannes Weiner [Fri, 13 Dec 2013 01:12:35 +0000 (17:12 -0800)]
mm: memcg: do not allow task about to OOM kill to bypass the limit

Commit 4942642080ea ("mm: memcg: handle non-error OOM situations more
gracefully") allowed tasks that already entered a memcg OOM condition to
bypass the memcg limit on subsequent allocation attempts hoping this
would expedite finishing the page fault and executing the kill.

David Rientjes is worried that this breaks memcg isolation guarantees
and since there is no evidence that the bypass actually speeds up fault
processing just change it so that these subsequent charge attempts fail
outright.  The notable exception being __GFP_NOFAIL charges which are
required to bypass the limit regardless.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-bt: David Rientjes <rientjes@google.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomm: memcg: fix race condition between memcg teardown and swapin
Johannes Weiner [Fri, 13 Dec 2013 01:12:34 +0000 (17:12 -0800)]
mm: memcg: fix race condition between memcg teardown and swapin

There is a race condition between a memcg being torn down and a swapin
triggered from a different memcg of a page that was recorded to belong
to the exiting memcg on swapout (with CONFIG_MEMCG_SWAP extension).  The
result is unreclaimable pages pointing to dead memcgs, which can lead to
anything from endless loops in later memcg teardown (the page is charged
to all hierarchical parents but is not on any LRU list) or crashes from
following the dangling memcg pointer.

Memcgs with tasks in them can not be torn down and usually charges don't
show up in memcgs without tasks.  Swapin with the CONFIG_MEMCG_SWAP
extension is the notable exception because it charges the cgroup that
was recorded as owner during swapout, which may be empty and in the
process of being torn down when a task in another memcg triggers the
swapin:

  teardown:                 swapin:

                            lookup_swap_cgroup_id()
                            rcu_read_lock()
                            mem_cgroup_lookup()
                            css_tryget()
                            rcu_read_unlock()
  disable css_tryget()
  call_rcu()
    offline_css()
      reparent_charges()
                            res_counter_charge() (hierarchical!)
                            css_put()
                              css_free()
                            pc->mem_cgroup = dead memcg
                            add page to dead lru

Add a final reparenting step into css_free() to make sure any such raced
charges are moved out of the memcg before it's finally freed.

In the longer term it would be cleaner to have the css_tryget() and the
res_counter charge under the same RCU lock section so that the charge
reparenting is deferred until the last charge whose tryget succeeded is
visible.  But this will require more invasive changes that will be
harder to evaluate and backport into stable, so better defer them to a
separate change set.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agothp: move preallocated PTE page table on move_huge_pmd()
Kirill A. Shutemov [Fri, 13 Dec 2013 01:12:33 +0000 (17:12 -0800)]
thp: move preallocated PTE page table on move_huge_pmd()

Andrey Wagin reported crash on VM_BUG_ON() in pgtable_pmd_page_dtor() with
fallowing backtrace:

  free_pgd_range+0x2bf/0x410
  free_pgtables+0xce/0x120
  unmap_region+0xe0/0x120
  do_munmap+0x249/0x360
  move_vma+0x144/0x270
  SyS_mremap+0x3b9/0x510
  system_call_fastpath+0x16/0x1b

The crash can be reproduce with this test case:

  #define _GNU_SOURCE
  #include <sys/mman.h>
  #include <stdio.h>
  #include <unistd.h>

  #define MB (1024 * 1024UL)
  #define GB (1024 * MB)

  int main(int argc, char **argv)
  {
char *p;
int i;

p = mmap((void *) GB, 10 * MB, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
for (i = 0; i < 10 * MB; i += 4096)
p[i] = 1;
mremap(p, 10 * MB, 10 * MB, MREMAP_FIXED | MREMAP_MAYMOVE, 2 * GB);
return 0;
  }

Due to split PMD lock, we now store preallocated PTE tables for THP
pages per-PMD table.  It means we need to move them to other PMD table
if huge PMD moved there.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Andrey Vagin <avagin@openvz.org>
Tested-by: Andrey Vagin <avagin@openvz.org>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomfd/rtc: s5m: fix register updating by adding regmap for RTC
Krzysztof Kozlowski [Fri, 13 Dec 2013 01:12:31 +0000 (17:12 -0800)]
mfd/rtc: s5m: fix register updating by adding regmap for RTC

Rename old regmap field of "struct sec_pmic_dev" to "regmap_pmic" and
add new regmap for RTC.

On S5M8767A registers were not properly updated and read due to usage of
the same regmap as the PMIC.  This could be observed in various hangs,
e.g.  in infinite loop during waiting for UDR field change.

On this chip family the RTC has different I2C address than PMIC so
additional regmap is needed.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Mark Brown <broonie@linaro.org>
Acked-by: Sangbeom Kim <sbkim73@samsung.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agortc: s5m: enable IRQ wake during suspend
Krzysztof Kozlowski [Fri, 13 Dec 2013 01:12:30 +0000 (17:12 -0800)]
rtc: s5m: enable IRQ wake during suspend

Add PM suspend/resume ops to rtc-s5m driver and enable IRQ wake during
suspend so the RTC would act like a wake up source.  This allows waking
up from suspend to RAM on RTC alarm interrupt.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Mark Brown <broonie@linaro.org>
Acked-by: Sangbeom Kim <sbkim73@samsung.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agortc: s5m: limit endless loop waiting for register update
Krzysztof Kozlowski [Fri, 13 Dec 2013 01:12:28 +0000 (17:12 -0800)]
rtc: s5m: limit endless loop waiting for register update

After setting alarm or time the driver is waiting for UDR register to be
cleared indicating that registers data have been transferred.

Limit the endless loop to only 5 retries.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Mark Brown <broonie@linaro.org>
Acked-by: Sangbeom Kim <sbkim73@samsung.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agortc: s5m: fix unsuccesful IRQ request during probe
Krzysztof Kozlowski [Fri, 13 Dec 2013 01:12:26 +0000 (17:12 -0800)]
rtc: s5m: fix unsuccesful IRQ request during probe

Probe failed for rtc-s5m:

s5m-rtc s5m-rtc: Failed to request alarm IRQ: 12: -22
s5m-rtc: probe of s5m-rtc failed with error -22

Fix rtc-s5m interrupt request by using regmap_irq_get_virq() for mapping
the IRQ.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Mark Brown <broonie@linaro.org>
Acked-by: Sangbeom Kim <sbkim73@samsung.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agodrivers/rtc/rtc-s5m.c: fix info->rtc assignment
Geert Uytterhoeven [Fri, 13 Dec 2013 01:12:25 +0000 (17:12 -0800)]
drivers/rtc/rtc-s5m.c: fix info->rtc assignment

Fix this warning:

  drivers/rtc/rtc-s5m.c: In function `s5m_rtc_probe':
  drivers/rtc/rtc-s5m.c:545: warning: assignment from incompatible pointer type

struct s5m_rtc_info.rtc has type "struct regmap *", while
struct sec_pmic_dev.rtc has type "struct i2c_client *".

Probably the author wanted to assign "struct sec_pmic_dev.regmap", which
has the correct type.

Also, as "rtc" doesn't make much sense as a name for a regmap, rename it
to "regmap".

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Sachin Kamat <sachin.kamat@linaro.org>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoinclude/linux/kernel.h: make might_fault() a nop for !MMU
Axel Lin [Fri, 13 Dec 2013 01:12:24 +0000 (17:12 -0800)]
include/linux/kernel.h: make might_fault() a nop for !MMU

The machine cannot fault if !MUU, so make might_fault() a nop for !MMU.

This fixes below build error if
!CONFIG_MMU && (CONFIG_PROVE_LOCKING=y || CONFIG_DEBUG_ATOMIC_SLEEP=y):

  arch/arm/kernel/built-in.o: In function `arch_ptrace':
  arch/arm/kernel/ptrace.c:852: undefined reference to `might_fault'
  arch/arm/kernel/built-in.o: In function `restore_sigframe':
  arch/arm/kernel/signal.c:173: undefined reference to `might_fault'
  ...
  arch/arm/kernel/built-in.o:arch/arm/kernel/signal.c:177: more undefined references to `might_fault' follow
  make: *** [vmlinux] Error 1

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agodrivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap
Linus Pizunski [Fri, 13 Dec 2013 01:12:23 +0000 (17:12 -0800)]
drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap

Update month and day of month to the alarm month/day instead of current
day/month when setting the RTC alarm mask.

Signed-off-by: Linus Pizunski <linus@narrativeteam.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoprocfs: also fix proc_reg_get_unmapped_area() for !MMU case
Jan Beulich [Fri, 13 Dec 2013 01:12:22 +0000 (17:12 -0800)]
procfs: also fix proc_reg_get_unmapped_area() for !MMU case

Commit fad1a86e25e0 ("procfs: call default get_unmapped_area on
MMU-present architectures"), as its title says, took care of only the
MMU case, leaving the !MMU side still in the regressed state (returning
-EIO in all cases where pde->proc_fops->get_unmapped_area is NULL).

From the fad1a86e25e0 changelog:

 "Commit c4fe24485729 ("sparc: fix PCI device proc file mmap(2)") added
  proc_reg_get_unmapped_area in proc_reg_file_ops and
  proc_reg_file_ops_no_compat, by which now mmap always returns EIO if
  get_unmapped_area method is not defined for the target procfs file, which
  causes regression of mmap on /proc/vmcore.

  To address this issue, like get_unmapped_area(), call default
  current->mm->get_unmapped_area on MMU-present architectures if
  pde->proc_fops->get_unmapped_area, i.e.  the one in actual file operation
  in the procfs file, is not defined"

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org> [3.12.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomm: memcg: do not declare OOM from __GFP_NOFAIL allocations
Johannes Weiner [Fri, 13 Dec 2013 01:12:20 +0000 (17:12 -0800)]
mm: memcg: do not declare OOM from __GFP_NOFAIL allocations

Commit 84235de394d9 ("fs: buffer: move allocation failure loop into the
allocator") started recognizing __GFP_NOFAIL in memory cgroups but
forgot to disable the OOM killer.

Any task that does not fail allocation will also not enter the OOM
completion path.  So don't declare an OOM state in this case or it'll be
leaked and the task be able to bypass the limit until the next
userspace-triggered page fault cleans up the OOM state.

Reported-by: William Dauchy <wdauchy@gmail.com>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.12.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoinclude/linux/hugetlb.h: make isolate_huge_page() an inline
Naoya Horiguchi [Fri, 13 Dec 2013 01:12:19 +0000 (17:12 -0800)]
include/linux/hugetlb.h: make isolate_huge_page() an inline

With CONFIG_HUGETLBFS=n:

  mm/migrate.c: In function `do_move_page_to_node_array':
  include/linux/hugetlb.h:140:33: warning: statement with no effect [-Wunused-value]
   #define isolate_huge_page(p, l) false
                                   ^
  mm/migrate.c:1170:4: note: in expansion of macro `isolate_huge_page'
      isolate_huge_page(page, &pagelist);

Reported-by: Borislav Petkov <bp@alien8.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 12 Dec 2013 23:46:06 +0000 (15:46 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Four security fixes for KVM on x86.  Thanks to Andrew Honig and Lars
  Bull from Google for reporting them"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: fix guest-initiated crash with x2apic (CVE-2013-6376)
  KVM: x86: Convert vapic synchronization to _cached functions (CVE-2013-6368)
  KVM: x86: Fix potential divide by 0 in lapic (CVE-2013-6367)
  KVM: Improve create VCPU parameter (CVE-2013-4587)

10 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Thu, 12 Dec 2013 23:45:03 +0000 (15:45 -0800)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Another week, another batch of fixes.

  Again, OMAP regressions due to move to DT is the bulk of the changes
  here, but this should be the last of it for 3.13.  There are also a
  handful of OMAP hwmod changes (power management, reset handling) for
  USB on OMAP3 that fixes some longish-standing bugs around USB resets.

  There are a couple of other changes that also add up line count a bit:
  One is a long-standing bug with the keyboard layout on one of the PXA
  platforms.  The other is a fix for highbank that moves their
  power-off/reset button handling to be done in-kernel since relying on
  userspace to handle it was fragile and awkward"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: sun6i: dt: Fix interrupt trigger types
  ARM: sun7i: dt: Fix interrupt trigger types
  MAINTAINERS: merge IMX6 entry into IMX
  ARM: tegra: add missing break to fuse initialization code
  ARM: pxa: prevent PXA270 occasional reboot freezes
  ARM: pxa: tosa: fix keys mapping
  ARM: OMAP2+: omap_device: add fail hook for runtime_pm when bad data is detected
  ARM: OMAP2+: hwmod: Fix usage of invalid iclk / oclk when clock node is not present
  ARM: OMAP3: hwmod data: Don't prevent RESET of USB Host module
  ARM: OMAP2+: hwmod: Fix SOFTRESET logic
  ARM: OMAP4+: hwmod data: Don't prevent RESET of USB Host module
  ARM: dts: Fix booting for secure omaps
  ARM: OMAP2+: Fix the machine entry for am3517
  ARM: dts: Fix missing entries for am3517
  ARM: OMAP2+: Fix overwriting hwmod data with data from device tree
  ARM: davinci: Fix McASP mem resource names
  ARM: highbank: handle soft poweroff and reset key events
  ARM: davinci: fix number of resources passed to davinci_gpio_register()
  gpio: davinci: fix check for unbanked gpio

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Thu, 12 Dec 2013 23:25:10 +0000 (15:25 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "This is a small collection of fixes.  It was rebased this morning, but
  I was just fixing signed-off-by tags with the wrong email"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix access_ok() check in btrfs_ioctl_send()
  Btrfs: make sure we cleanup all reloc roots if error happens
  Btrfs: skip building backref tree for uuid and quota tree when doing balance relocation
  Btrfs: fix an oops when doing balance relocation
  Btrfs: don't miss skinny extent items on delayed ref head contention
  btrfs: call mnt_drop_write after interrupted subvol deletion
  Btrfs: don't clear the default compression type

10 years agoMerge branch 'for-3.13' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Thu, 12 Dec 2013 23:24:32 +0000 (15:24 -0800)]
Merge branch 'for-3.13' of git://linux-nfs.org/~bfields/linux

Pull nfsd reply cache bugfix from Bruce Fields:
 "One bugfix for nfsd crashes"

* 'for-3.13' of git://linux-nfs.org/~bfields/linux:
  nfsd: when reusing an existing repcache entry, unhash it first

10 years agomtd: nand: pxa3xx: Use info->use_dma to release DMA resources
Ezequiel Garcia [Tue, 10 Dec 2013 12:57:15 +0000 (09:57 -0300)]
mtd: nand: pxa3xx: Use info->use_dma to release DMA resources

In commit:

  commit 62e8b851783138a11da63285be0fbf69530ff73d
  Author: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
  Date:   Fri Oct 4 15:30:38 2013 -0300

  mtd: nand: pxa3xx: Allocate data buffer on detected flash size

the way the buffer is allocated was changed: the first READ_ID is issued
with a small kmalloc'ed buffer. Only once the flash page size is detected
the DMA buffers are allocated, and info->use_dma is set.

Currently, if the device detection fails, the driver checks the 'use_dma'
module parameter and tries to release unallocated DMA resources.

Fix this by checking the proper indicator of the DMA allocation, which
is 'info->use_dma'.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
10 years agoPartially revert "mtd: nand: pxa3xx: Introduce 'marvell,armada370-nand' compatible...
Ezequiel Garcia [Mon, 9 Dec 2013 21:36:26 +0000 (18:36 -0300)]
Partially revert "mtd: nand: pxa3xx: Introduce 'marvell,armada370-nand' compatible string"

This partially reverts c0f3b8643a6fa2461d70760ec49d21d2b031d611.

The "armada370-nand" compatible support is not complete, and it was mistake
to add it. Revert it and postpone the support until the infrastructure is
in place.

Cc: <stable@vger.kernel.org> # 3.12
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
10 years agoselinux: process labeled IPsec TCP SYN-ACK packets properly in selinux_ip_postroute()
Paul Moore [Tue, 10 Dec 2013 19:58:01 +0000 (14:58 -0500)]
selinux: process labeled IPsec TCP SYN-ACK packets properly in selinux_ip_postroute()

Due to difficulty in arriving at the proper security label for
TCP SYN-ACK packets in selinux_ip_postroute(), we need to check packets
while/before they are undergoing XFRM transforms instead of waiting
until afterwards so that we can determine the correct security label.

Reported-by: Janak Desai <Janak.Desai@gtri.gatech.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <pmoore@redhat.com>
10 years agoselinux: look for IPsec labels on both inbound and outbound packets
Paul Moore [Tue, 10 Dec 2013 19:57:54 +0000 (14:57 -0500)]
selinux: look for IPsec labels on both inbound and outbound packets

Previously selinux_skb_peerlbl_sid() would only check for labeled
IPsec security labels on inbound packets, this patch enables it to
check both inbound and outbound traffic for labeled IPsec security
labels.

Reported-by: Janak Desai <Janak.Desai@gtri.gatech.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <pmoore@redhat.com>
10 years agoselinux: handle TCP SYN-ACK packets correctly in selinux_ip_postroute()
Paul Moore [Wed, 4 Dec 2013 21:10:51 +0000 (16:10 -0500)]
selinux: handle TCP SYN-ACK packets correctly in selinux_ip_postroute()

In selinux_ip_postroute() we perform access checks based on the
packet's security label.  For locally generated traffic we get the
packet's security label from the associated socket; this works in all
cases except for TCP SYN-ACK packets.  In the case of SYN-ACK packet's
the correct security label is stored in the connection's request_sock,
not the server's socket.  Unfortunately, at the point in time when
selinux_ip_postroute() is called we can't query the request_sock
directly, we need to recreate the label using the same logic that
originally labeled the associated request_sock.

See the inline comments for more explanation.

Reported-by: Janak Desai <Janak.Desai@gtri.gatech.edu>
Tested-by: Janak Desai <Janak.Desai@gtri.gatech.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <pmoore@redhat.com>
10 years agoselinux: handle TCP SYN-ACK packets correctly in selinux_ip_output()
Paul Moore [Wed, 4 Dec 2013 21:10:45 +0000 (16:10 -0500)]
selinux: handle TCP SYN-ACK packets correctly in selinux_ip_output()

In selinux_ip_output() we always label packets based on the parent
socket.  While this approach works in almost all cases, it doesn't
work in the case of TCP SYN-ACK packets when the correct label is not
the label of the parent socket, but rather the label of the larval
socket represented by the request_sock struct.

Unfortunately, since the request_sock isn't queued on the parent
socket until *after* the SYN-ACK packet is sent, we can't lookup the
request_sock to determine the correct label for the packet; at this
point in time the best we can do is simply pass/NF_ACCEPT the packet.
It must be said that simply passing the packet without any explicit
labeling action, while far from ideal, is not terrible as the SYN-ACK
packet will inherit any IP option based labeling from the initial
connection request so the label *should* be correct and all our
access controls remain in place so we shouldn't have to worry about
information leaks.

Reported-by: Janak Desai <Janak.Desai@gtri.gatech.edu>
Tested-by: Janak Desai <Janak.Desai@gtri.gatech.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <pmoore@redhat.com>
10 years agoi2c: imx: Check the return value from clk_prepare_enable()
Fabio Estevam [Wed, 4 Dec 2013 22:21:37 +0000 (20:21 -0200)]
i2c: imx: Check the return value from clk_prepare_enable()

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
10 years agoKVM: x86: fix guest-initiated crash with x2apic (CVE-2013-6376)
Gleb Natapov [Thu, 12 Dec 2013 20:20:08 +0000 (21:20 +0100)]
KVM: x86: fix guest-initiated crash with x2apic (CVE-2013-6376)

A guest can cause a BUG_ON() leading to a host kernel crash.
When the guest writes to the ICR to request an IPI, while in x2apic
mode the following things happen, the destination is read from
ICR2, which is a register that the guest can control.

kvm_irq_delivery_to_apic_fast uses the high 16 bits of ICR2 as the
cluster id.  A BUG_ON is triggered, which is a protection against
accessing map->logical_map with an out-of-bounds access and manages
to avoid that anything really unsafe occurs.

The logic in the code is correct from real HW point of view. The problem
is that KVM supports only one cluster with ID 0 in clustered mode, but
the code that has the bug does not take this into account.

Reported-by: Lars Bull <larsbull@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoKVM: x86: Convert vapic synchronization to _cached functions (CVE-2013-6368)
Andy Honig [Wed, 20 Nov 2013 18:23:22 +0000 (10:23 -0800)]
KVM: x86: Convert vapic synchronization to _cached functions (CVE-2013-6368)

In kvm_lapic_sync_from_vapic and kvm_lapic_sync_to_vapic there is the
potential to corrupt kernel memory if userspace provides an address that
is at the end of a page.  This patches concerts those functions to use
kvm_write_guest_cached and kvm_read_guest_cached.  It also checks the
vapic_address specified by userspace during ioctl processing and returns
an error to userspace if the address is not a valid GPA.

This is generally not guest triggerable, because the required write is
done by firmware that runs before the guest.  Also, it only affects AMD
processors and oldish Intel that do not have the FlexPriority feature
(unless you disable FlexPriority, of course; then newer processors are
also affected).

Fixes: b93463aa59d6 ('KVM: Accelerated apic support')

Reported-by: Andrew Honig <ahonig@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoKVM: x86: Fix potential divide by 0 in lapic (CVE-2013-6367)
Andy Honig [Tue, 19 Nov 2013 22:12:18 +0000 (14:12 -0800)]
KVM: x86: Fix potential divide by 0 in lapic (CVE-2013-6367)

Under guest controllable circumstances apic_get_tmcct will execute a
divide by zero and cause a crash.  If the guest cpuid support
tsc deadline timers and performs the following sequence of requests
the host will crash.
- Set the mode to periodic
- Set the TMICT to 0
- Set the mode bits to 11 (neither periodic, nor one shot, nor tsc deadline)
- Set the TMICT to non-zero.
Then the lapic_timer.period will be 0, but the TMICT will not be.  If the
guest then reads from the TMCCT then the host will perform a divide by 0.

This patch ensures that if the lapic_timer.period is 0, then the division
does not occur.

Reported-by: Andrew Honig <ahonig@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoKVM: Improve create VCPU parameter (CVE-2013-4587)
Andy Honig [Tue, 19 Nov 2013 00:09:22 +0000 (16:09 -0800)]
KVM: Improve create VCPU parameter (CVE-2013-4587)

In multiple functions the vcpu_id is used as an offset into a bitfield.  Ag
malicious user could specify a vcpu_id greater than 255 in order to set or
clear bits in kernel memory.  This could be used to elevate priveges in the
kernel.  This patch verifies that the vcpu_id provided is less than 255.
The api documentation already specifies that the vcpu_id must be less than
max_vcpus, but this is currently not checked.

Reported-by: Andrew Honig <ahonig@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoi2c: mux: Inherit retry count and timeout from parent for muxed bus
Elie De Brauwer [Mon, 9 Dec 2013 18:48:28 +0000 (19:48 +0100)]
i2c: mux: Inherit retry count and timeout from parent for muxed bus

If a muxed i2c bus gets created the default retry count and
timeout of the muxed bus is zero. Hence it it possible that you
end up with a situation where the parent controller sets a default
retry count and timeout which gets applied and used while the muxed
bus (using the same controller) has a default retry count of zero
and a default timeout of 1s (set in i2c_add_adapter()). This can be
solved by initializing the retry count and timeout of the muxed
bus with the values used by the the parent at creation time.

Signed-off-by: Elie De Brauwer <eliedebrauwer@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
10 years agoMerge tag 'sound-3.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Thu, 12 Dec 2013 21:14:25 +0000 (13:14 -0800)]
Merge tag 'sound-3.13-rc4' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Still a slightly high amount of changes than wished, but they are all
  good regression and/or device-specific fixes.  Majority of commits are
  for HD-audio, an HDMI ctl index fix that hits old graphics boards,
  regression fixes for AD codecs and a few quirks.

  Other than that, two major fixes are included: a 64bit ABI fix for
  compress offload, and 64bit dma_addr_t truncation fix, which had hit
  on PAE kernels"

* tag 'sound-3.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Add static DAC/pin mapping for AD1986A codec
  ALSA: hda - One more Dell headset detection quirk
  ALSA: hda - hdmi: Fix IEC958 ctl indexes for some simple HDMI devices
  ALSA: hda - Mute all aamix inputs as default
  ALSA: compress: Fix 64bit ABI incompatibility
  ALSA: memalloc.h - fix wrong truncation of dma_addr_t
  ALSA: hda - Another Dell headset detection quirk
  ALSA: hda - A Dell headset detection quirk
  ALSA: hda - Remove quirk for Dell Vostro 131
  ALSA: usb-audio: fix uninitialized variable compile warning
  ALSA: hda - fix mic issues on Acer Aspire E-572

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Thu, 12 Dec 2013 21:13:47 +0000 (13:13 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "A fix for recent sysfs breakage in serio subsystem plus a fixup to
  adxl34x driver"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: adxl34x - Fix bug in definition of ADXL346_2D_ORIENT
  Input: serio - fix sysfs layout