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9 years agocrypto: marvell/cesa - fix stack smashing in marvell/hash.c
Russell King [Fri, 9 Oct 2015 19:43:38 +0000 (20:43 +0100)]
crypto: marvell/cesa - fix stack smashing in marvell/hash.c

Several of the algorithms in marvell/hash.c have a statesize of zero.
When an AF_ALG accept() on an already-accepted file descriptor to
calls into hash_accept(), this causes:

char state[crypto_ahash_statesize(crypto_ahash_reqtfm(req))];

to be zero-sized, but we still pass this to:

err = crypto_ahash_export(req, state);

which proceeds to write to 'state' as if it was a "struct md5_state",
"struct sha1_state" etc.  Add the necessary initialisers for the
.statesize member.

Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agoMAINTAINERS: add maintainers for the Marvell Crypto driver
Thomas Petazzoni [Fri, 9 Oct 2015 15:39:02 +0000 (17:39 +0200)]
MAINTAINERS: add maintainers for the Marvell Crypto driver

A new crypto driver for Marvell ARM platforms was added in
drivers/crypto/marvell/ as part of commit f63601fd616ab ("crypto:
marvell/cesa - add a new driver for Marvell's CESA"). This commit adds
the relevant developers to the list of maintainers.

Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Arnaud Ebalard <arno@natisbad.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: 842 - Add CRC and validation support
Haren Myneni [Thu, 8 Oct 2015 20:45:51 +0000 (13:45 -0700)]
crypto: 842 - Add CRC and validation support

This patch adds CRC generation and validation support for nx-842.
Add CRC flag so that nx842 coprocessor includes CRC during compression
and validates during decompression.

Also changes in 842 SW compression to append CRC value at the end
of template and checks during decompression.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: jitterentropy - remove unnecessary information from a comment
Alexander Kuleshov [Thu, 8 Oct 2015 17:12:25 +0000 (23:12 +0600)]
crypto: jitterentropy - remove unnecessary information from a comment

The clocksource does not provide clocksource_register() function since
f893598 commit (clocksource: Mostly kill clocksource_register()), so
let's remove unnecessary information about this function from a comment.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Suggested-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: akcipher - Changes to asymmetric key API
Tadeusz Struk [Thu, 8 Oct 2015 16:26:55 +0000 (09:26 -0700)]
crypto: akcipher - Changes to asymmetric key API

Setkey function has been split into set_priv_key and set_pub_key.
Akcipher requests takes sgl for src and dst instead of void *.
Users of the API i.e. two existing RSA implementation and
test mgr code have been updated accordingly.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agolib/mpi: Add mpi sgl helpers
Tadeusz Struk [Thu, 8 Oct 2015 16:26:50 +0000 (09:26 -0700)]
lib/mpi: Add mpi sgl helpers

Add mpi_read_raw_from_sgl and mpi_write_to_sgl helpers.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: st - Improve FIFO size/depth description
Lee Jones [Wed, 7 Oct 2015 12:23:29 +0000 (13:23 +0100)]
hwrng: st - Improve FIFO size/depth description

The original representation of FIFO size in the driver coupled with the
ambiguity in the documentation meant that it was easy to confuse readers.
This lead to a false positive BUG-find and subsequently time wastage
debugging this phantom issue.

Hopefully this patch can prevent future readers from falling into the
same trap.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: st - Use real-world device timings for timeout
Lee Jones [Wed, 7 Oct 2015 12:23:28 +0000 (13:23 +0100)]
hwrng: st - Use real-world device timings for timeout

Samples are documented to be available every 0.667us, so in theory
the 8 sample deep FIFO should take 5.336us to fill.  However, during
thorough testing, it became apparent that filling the FIFO actually
takes closer to 12us.

Also take into consideration that udelay() can behave oddly i.e. not
delay for as long as requested.

Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>:
    "IIRC, Linus recommends a x2 factor on delays, especially
     timeouts generated by these functions.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: st: dt: Fix trivial typo in node address
Lee Jones [Wed, 7 Oct 2015 12:23:27 +0000 (13:23 +0100)]
hwrng: st: dt: Fix trivial typo in node address

DT nodes should not append their addresses with '0x'.

Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: atmel - Check for clk_prepare_enable() return value
LABBE Corentin [Fri, 2 Oct 2015 12:12:58 +0000 (14:12 +0200)]
crypto: atmel - Check for clk_prepare_enable() return value

clk_prepare_enable() can fail so add a check for this and
return the error code if it fails.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: caam - add support for acipher xts(aes)
Catalin Vasile [Fri, 2 Oct 2015 10:13:18 +0000 (13:13 +0300)]
crypto: caam - add support for acipher xts(aes)

Add support for AES working in XEX-based Tweaked-codebook mode with
ciphertext Stealing (XTS)

sector index - HW limitation: CAAM device supports sector index of only
8 bytes to be used for sector index inside IV, instead of whole 16 bytes
received on request. This represents 2 ^ 64 = 16,777,216 Tera of possible
values for sector index.

Signed-off-by: Cristian Hristea <cristi.hristea@gmail.com>
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Alex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: Catalin Vasile <catalin.vasile@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: qce - dma_map_sg can handle chained SG
LABBE Corentin [Fri, 2 Oct 2015 06:01:02 +0000 (08:01 +0200)]
crypto: qce - dma_map_sg can handle chained SG

The qce driver use two dma_map_sg path according to SG are chained
or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.

Thus removing qce_mapsg, qce_unmapsg and qce_countsg functions.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: ccp - Use module name in driver structures
Tom Lendacky [Thu, 1 Oct 2015 21:32:50 +0000 (16:32 -0500)]
crypto: ccp - Use module name in driver structures

The convention is to use the name of the module in the driver structures
that are used for registering the device. The CCP module is currently
using a descriptive name. Replace the descriptive name with module name.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: ccp - Change references to accelerator to offload
Tom Lendacky [Thu, 1 Oct 2015 21:32:44 +0000 (16:32 -0500)]
crypto: ccp - Change references to accelerator to offload

The CCP is meant to be more of an offload engine than an accelerator
engine. To avoid any confusion, change references to accelerator to
offload.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: ccp - Remove use ACPI field
Tom Lendacky [Thu, 1 Oct 2015 21:32:38 +0000 (16:32 -0500)]
crypto: ccp - Remove use ACPI field

With the creation of the device_dma_is_coherent API the "use_acpi" field
is no longer needed, so remove it.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: ccp - Replace BUG_ON with WARN_ON and a return code
Tom Lendacky [Thu, 1 Oct 2015 21:32:31 +0000 (16:32 -0500)]
crypto: ccp - Replace BUG_ON with WARN_ON and a return code

Replace the usage of BUG_ON with WARN_ON and return an error.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: qat - remove unneeded variable
Tadeusz Struk [Wed, 30 Sep 2015 12:40:00 +0000 (05:40 -0700)]
crypto: qat - remove unneeded variable

Remove unneeded variable val_indx.
Issue found by a static analyzer.

Reported-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: qat - add support for ctr(aes) and xts(aes)
Tadeusz Struk [Wed, 30 Sep 2015 12:38:39 +0000 (05:38 -0700)]
crypto: qat - add support for ctr(aes) and xts(aes)

Add support for ctr and xts encryption modes.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: skcipher - blkcipher and ablkcipher should it be static
Geliang Tang [Sun, 27 Sep 2015 14:47:05 +0000 (22:47 +0800)]
crypto: skcipher - blkcipher and ablkcipher should it be static

Fixes the following sparse warnings:

 crypto/skcipher.c:94:5:
 warning: symbol 'crypto_init_skcipher_ops_blkcipher'
 was not declared. Should it be static?

 crypto/skcipher.c:185:5:
 warning: symbol 'crypto_init_skcipher_ops_ablkcipher'
 was not declared. Should it be static?

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: testmgr - Disable fips-allowed for authenc() and des() ciphers
John Haxby [Thu, 24 Sep 2015 17:24:35 +0000 (18:24 +0100)]
crypto: testmgr - Disable fips-allowed for authenc() and des() ciphers

No authenc() ciphers are FIPS approved, nor is ecb(des).
After the end of 2015, ansi_cprng will also be non-approved.

Signed-off-by: John Haxby <john.haxby@oracle.com>
Acked-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: sahara - dma_map_sg can handle chained SG
LABBE Corentin [Wed, 23 Sep 2015 11:55:28 +0000 (13:55 +0200)]
crypto: sahara - dma_map_sg can handle chained SG

The sahara driver use two dma_map_sg path according to SG are chained
or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.

Thus removing the sahara_sha_unmap_sg function.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: caam - dma_map_sg can handle chained SG
LABBE Corentin [Wed, 23 Sep 2015 11:55:27 +0000 (13:55 +0200)]
crypto: caam - dma_map_sg can handle chained SG

The caam driver use two dma_map_sg path according to SG are chained
or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.

Thus removing dma_map_sg_chained, dma_unmap_sg_chained
and __sg_count functions.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: talitos - dma_map_sg can handle chained SG
LABBE Corentin [Wed, 23 Sep 2015 11:55:25 +0000 (13:55 +0200)]
crypto: talitos - dma_map_sg can handle chained SG

The talitos driver use two dma_map_sg path
according to SG are chained or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.

Thus removing talitos_map_sg, talitos_unmap_sg_chain
and sg_count functions.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: qat - remove empty functions and turn qat_uregister fn to void
Tadeusz Struk [Tue, 22 Sep 2015 18:57:47 +0000 (11:57 -0700)]
crypto: qat - remove empty functions and turn qat_uregister fn to void

Some code cleanups after crypto API changes:
- Change qat_algs_unregister to a void function to keep it consistent
  with qat_asym_algs_unregister.
- Remove empty functions qat_algs_init & qat_algs_exit.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: crc32c-pclmul - use .rodata instead of .rotata
Nicolas Iooss [Sun, 20 Sep 2015 14:42:36 +0000 (16:42 +0200)]
crypto: crc32c-pclmul - use .rodata instead of .rotata

Module crc32c-intel uses a special read-only data section named .rotata.
This section is defined for K_table, and its name seems to be a spelling
mistake for .rodata.

Fixes: 473946e674eb ("crypto: crc32c-pclmul - Shrink K_table to 32-bit words")
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: sahara - replace sahara_sg_length with sg_nents_for_len
LABBE Corentin [Fri, 18 Sep 2015 12:57:11 +0000 (14:57 +0200)]
crypto: sahara - replace sahara_sg_length with sg_nents_for_len

The sahara_sg_length function of the sahara driver is the same
as sg_nents_for_len from lib/scatterlist.c

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: amcc - replace get_sg_count by sg_nents_for_len
LABBE Corentin [Fri, 18 Sep 2015 12:57:10 +0000 (14:57 +0200)]
crypto: amcc - replace get_sg_count by sg_nents_for_len

The get_sg_count function of amcc is the same as sg_nents_for_len from
lib/scatterlist.c

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: bfin_crc - replace sg_count by sg_nents
LABBE Corentin [Fri, 18 Sep 2015 12:57:09 +0000 (14:57 +0200)]
crypto: bfin_crc - replace sg_count by sg_nents

The sg_count function in bfin_crc.c is the same function as sg_nents.
Remove the duplicate code and use sg_nents() instead.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: x86/sha - Restructure x86 sha512 glue code to expose all the available sha512...
tim [Wed, 16 Sep 2015 23:35:53 +0000 (16:35 -0700)]
crypto: x86/sha - Restructure x86 sha512 glue code to expose all the available sha512 transforms

Restructure the x86 sha512 glue code so we will expose sha512 transforms
based on SSSE3, AVX or AVX2 as separate individual drivers when cpu
provides support. This will make it easy for alternative algorithms to
be used if desired and makes the code cleaner and easier to maintain.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: x86/sha - Restructure x86 sha256 glue code to expose all the available sha256...
tim [Wed, 16 Sep 2015 23:35:23 +0000 (16:35 -0700)]
crypto: x86/sha - Restructure x86 sha256 glue code to expose all the available sha256 transforms

Restructure the x86 sha256 glue code so we will expose sha256 transforms
based on SSSE3, AVX, AVX2 or SHA-NI extension as separate individual
drivers when cpu provides such support. This will make it easy for
alternative algorithms to be used if desired and makes the code cleaner
and easier to maintain.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: x86/sha - Restructure x86 sha1 glue code to expose all the available sha1...
tim [Wed, 16 Sep 2015 23:34:53 +0000 (16:34 -0700)]
crypto: x86/sha - Restructure x86 sha1 glue code to expose all the available sha1 transforms

Restructure the x86 sha1 glue code so we will expose sha1 transforms based
on SSSE3, AVX, AVX2 or SHA-NI extension as separate individual drivers
when cpu provides such support. This will make it easy for alternative
algorithms to be used if desired and makes the code cleaner and easier
to maintain.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: x86/sha - Add build support for Intel SHA Extensions optimized SHA1 and SHA256
tim [Thu, 10 Sep 2015 22:27:26 +0000 (15:27 -0700)]
crypto: x86/sha - Add build support for Intel SHA Extensions optimized SHA1 and SHA256

This patch provides the configuration and build support to
include and build the optimized SHA1 and SHA256 update transforms
for the kernel's crypto library.

Originally-by: Chandramouli Narayanan <mouli_7982@yahoo.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: x86/sha - glue code for Intel SHA extensions optimized SHA1 & SHA256
tim [Thu, 10 Sep 2015 22:27:20 +0000 (15:27 -0700)]
crypto: x86/sha - glue code for Intel SHA extensions optimized SHA1 & SHA256

This patch adds the glue code to detect and utilize the Intel SHA
extensions optimized SHA1 and SHA256 update transforms when available.

This code has been tested on Broxton for functionality.

Originally-by: Chandramouli Narayanan <mouli_7982@yahoo.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: x86/sha - Intel SHA Extensions optimized SHA256 transform function
tim [Thu, 10 Sep 2015 22:27:13 +0000 (15:27 -0700)]
crypto: x86/sha - Intel SHA Extensions optimized SHA256 transform function

This patch includes the Intel SHA Extensions optimized implementation
of SHA-256 update function. This function has been tested on Broxton
platform and measured a speed up of 3.6x over the SSSE3 implementiation
for 4K blocks.

Originally-by: Chandramouli Narayanan <mouli_7982@yahoo.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: x86/sha - Intel SHA Extensions optimized SHA1 transform function
tim [Thu, 10 Sep 2015 22:26:59 +0000 (15:26 -0700)]
crypto: x86/sha - Intel SHA Extensions optimized SHA1 transform function

This patch includes the Intel SHA Extensions optimized implementation
of SHA-1 update function. This function has been tested on Broxton
platform and measured a speed up of 3.6x over the SSSE3 implementiation
for 4K blocks.

Originally-by: Chandramouli Narayanan <mouli_7982@yahoo.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agoMAINTAINERS: Add ST's Random Number Generator to the ST entry
Lee Jones [Thu, 17 Sep 2015 13:45:57 +0000 (14:45 +0100)]
MAINTAINERS: Add ST's Random Number Generator to the ST entry

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agoARM: STi: STiH407: Enable the 2 HW Random Number Generators for STiH4{07, 10}
Lee Jones [Thu, 17 Sep 2015 13:45:56 +0000 (14:45 +0100)]
ARM: STi: STiH407: Enable the 2 HW Random Number Generators for STiH4{07, 10}

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: st - Add support for ST's HW Random Number Generator
Lee Jones [Thu, 17 Sep 2015 13:45:55 +0000 (14:45 +0100)]
hwrng: st - Add support for ST's HW Random Number Generator

Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Kieran Bingham <kieranbingham@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: st - Provide DT bindings for ST's Random Number Generator
Lee Jones [Thu, 17 Sep 2015 13:45:54 +0000 (14:45 +0100)]
hwrng: st - Provide DT bindings for ST's Random Number Generator

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: core - Simplify RNG switching from sysfs
Lee Jones [Thu, 17 Sep 2015 13:45:53 +0000 (14:45 +0100)]
hwrng: core - Simplify RNG switching from sysfs

If we attempt to use sysfs to change the current RNG in the usual
way i.e. issuing something like:

`echo 8a8a000.rng > /sys/devices/virtual/misc/hw_random/rng_current`

... it will fail because the code doesn't currently take the '\n'
into consideration.  Well, now it does.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: Kconfig - Fix device node name reference /dev/hw_random => /dev/hwrng
Lee Jones [Thu, 17 Sep 2015 13:45:52 +0000 (14:45 +0100)]
hwrng: Kconfig - Fix device node name reference /dev/hw_random => /dev/hwrng

In April 2009, commit d405640 ("Driver Core: misc: add node name support
for misc devices.") inadvertently changed the device node name from
/dev/hw_random to /dev/hwrng.  Since 6 years has passed since the change
it seems unpractical to change it back, as this node name is probably
considered ABI by now.  So instead, we'll just change the Kconfig help
to match the current situation.

NB: It looks like rng-tools have already been updated.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Kieran Bingham <kieranbingham@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: doc - Fix device node name reference /dev/hw_random => /dev/hwrng
Lee Jones [Thu, 17 Sep 2015 13:45:51 +0000 (14:45 +0100)]
hwrng: doc - Fix device node name reference /dev/hw_random => /dev/hwrng

In April 2009, commit d405640 ("Driver Core: misc: add node name support
for misc devices.") inadvertently changed the device node name from
/dev/hw_random to /dev/hwrng.  Since 6 years has passed since the change
it seems unpractical to change it back, as this node name is probably
considered ABI by now.  So instead, we'll just change the documentation
to match the current situation.

NB: It looks like rng-tools have already been updated.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Kieran Bingham <kieranbingham@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: asymmetric_keys - remove always false comparison
sudip [Thu, 17 Sep 2015 07:42:51 +0000 (13:12 +0530)]
crypto: asymmetric_keys - remove always false comparison

hour, min and sec are unsigned int and they can never be less than zero.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: qat - Add load balancing across devices
Tadeusz Struk [Wed, 16 Sep 2015 12:33:06 +0000 (05:33 -0700)]
crypto: qat - Add load balancing across devices

Load balancing of crypto instances only used a single device.
There was no problem with that on PF, but since there is only
one or two instance per VF we need to loadbalance across devices.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: caam - Remove unused JUMP_TYPE_MASK definition
Fabio Estevam [Tue, 15 Sep 2015 16:54:53 +0000 (13:54 -0300)]
crypto: caam - Remove unused JUMP_TYPE_MASK definition

Commit a1efb01feca597b ("jump_label, locking/static_keys: Rename
JUMP_LABEL_TYPE_* and related helpers to the static_key* pattern")
introduced the definition of JUMP_TYPE_MASK in
include/linux/jump_label.h causing the following name collision:

In file included from drivers/crypto/caam/desc_constr.h:7:0,
                 from drivers/crypto/caam/ctrl.c:15:
drivers/crypto/caam/desc.h:1495:0: warning: "JUMP_TYPE_MASK" redefined
 #define JUMP_TYPE_MASK  (0x03 << JUMP_TYPE_SHIFT)
 ^
In file included from include/linux/module.h:19:0,
                 from drivers/crypto/caam/compat.h:9,
                 from drivers/crypto/caam/ctrl.c:11:
include/linux/jump_label.h:131:0: note: this is the location of the previous definition
 #define JUMP_TYPE_MASK 1UL

As JUMP_TYPE_MASK definition in desc.h is never used, we can safely remove
it to avoid the name collision.

Reported-by: Olof's autobuilder <build@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Horia Geant? <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: Fix module autoload for OF platform drivers
Luis de Bethencourt [Tue, 15 Sep 2015 16:41:33 +0000 (18:41 +0200)]
hwrng: Fix module autoload for OF platform drivers

This platform drivers have a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: mxc-rnga - Use the preferred format for kzalloc
Fabio Estevam [Sat, 12 Sep 2015 23:19:53 +0000 (20:19 -0300)]
hwrng: mxc-rnga - Use the preferred format for kzalloc

According to Documentation/CodingStyle:

"The preferred form for passing a size of a struct is the following:

p = kmalloc(sizeof(*p), ...);"

,so do as suggested.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: mxc-rnga - Remove unnecessary dev_info message
Fabio Estevam [Sat, 12 Sep 2015 23:19:52 +0000 (20:19 -0300)]
hwrng: mxc-rnga - Remove unnecessary dev_info message

There is no need to print a message simply saying that a kernel
driver has been registered, so remove it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: mxc-rnga - Remove uneeded initialization
Fabio Estevam [Sat, 12 Sep 2015 23:19:51 +0000 (20:19 -0300)]
hwrng: mxc-rnga - Remove uneeded initialization

There is no need to pre-initialize variable 'err' as this
initial value will be overwritten later on.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: mxc-rnga - Remove unneeded goto label
Fabio Estevam [Sat, 12 Sep 2015 23:19:50 +0000 (20:19 -0300)]
hwrng: mxc-rnga - Remove unneeded goto label

We can simplify the code by returning the error code immediately
instead of jumping to a goto label.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: qat - don't check for iommu
John Griffin [Fri, 11 Sep 2015 19:26:00 +0000 (12:26 -0700)]
crypto: qat - don't check for iommu

In some cases we don't want iommu to be enabled but still we want to enable VFs.

Signed-off-by: John Griffin <john.griffin@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agohwrng: octeon - Use devm_hwrng_register
Vaishali Thakkar [Thu, 10 Sep 2015 06:02:26 +0000 (11:32 +0530)]
hwrng: octeon - Use devm_hwrng_register

Use resource managed function devm_hwrng_register instead of
hwrng_register to make the error-path simpler. Also, remove
octeon_rng_remove as it is now redundant.

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: mxs-dcp - Allow MXS_DCP to be used on MX6SL
Fabio Estevam [Wed, 2 Sep 2015 15:05:18 +0000 (12:05 -0300)]
crypto: mxs-dcp - Allow MXS_DCP to be used on MX6SL

MX6SL has the same DCP crypto block as in MX23/MX28, so allow it to be
built for ARCH_MXC.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: ux500 - Fix module autoload for OF platform drivers
Luis de Bethencourt [Fri, 28 Aug 2015 16:44:49 +0000 (18:44 +0200)]
crypto: ux500 - Fix module autoload for OF platform drivers

These platform drivers have a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luis@debethencourt.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: picoxcell - Fix module autoload for OF platform driver
Luis de Bethencourt [Fri, 28 Aug 2015 16:44:03 +0000 (18:44 +0200)]
crypto: picoxcell - Fix module autoload for OF platform driver

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luis@debethencourt.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: amcc - Fix module autoload for OF platform driver
Luis de Bethencourt [Fri, 28 Aug 2015 16:43:24 +0000 (18:43 +0200)]
crypto: amcc - Fix module autoload for OF platform driver

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luis@debethencourt.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: tcrypt - avoid mapping from module image addresses
Horia Geant? [Thu, 27 Aug 2015 15:38:36 +0000 (18:38 +0300)]
crypto: tcrypt - avoid mapping from module image addresses

The output buffer in test_ahash_speed will point to an address located
within the tcrypt module image.
This causes problems when trying to DMA map the buffer.
For e.g. on ARM-based LS1021A, a page fault occurs within the
DMA API when trying to access the struct page returned by
virt_to_page(output):

insmod tcrypt.ko mode=403

testing speed of async sha1 (sha1-caam)
test  0 (   16 byte blocks,   16 bytes per update,   1 updates):
Unable to handle kernel paging request at virtual address f07e9080
pgd = e58d0e00
[f07e9080] *pgd=80000080007003, *pmd=00000000
Internal error: Oops: 206 [#1] SMP THUMB2
Modules linked in: tcrypt(+)
CPU: 1 PID: 1119 Comm: insmod Not tainted 4.2.0-rc1-256134-gbf433416e675 #1
Hardware name: Freescale LS1021A
task: ea063900 ti: e5a34000 task.ti: e5a34000
PC is at dma_cache_maint_page+0x38/0xd0
LR is at __dma_page_cpu_to_dev+0x15/0x64
pc : [<800155a0>]    lr : [<8001564d>]    psr: 000f0033
sp : e5a35ca0  ip : 8063df00  fp : f07e9080
r10: 00000cd0  r9 : 8063df00  r8 : 805a2f04
r7 : 0017f804  r6 : 00000002  r5 : ee7f9000  r4 : 00000014
r3 : 80612d40  r2 : 01ff0080  r1 : 00000380  r0 : ee7f9000
Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA Thumb  Segment user
Control: 70c5387d  Table: e58d0e00  DAC: 9b7ede70
Process insmod (pid: 1119, stack limit = 0xe5a34210)
Stack: (0xe5a35ca0 to 0xe5a36000)
[...]
[<800155a0>] (dma_cache_maint_page) from [<8001564d>] (__dma_page_cpu_to_dev+0x15/0x64)
[<8001564d>] (__dma_page_cpu_to_dev) from [<800156eb>] (arm_dma_map_page+0x1f/0x44)
[<800156eb>] (arm_dma_map_page) from [<802935e3>] (ahash_digest+0x35f/0x510)
[<802935e3>] (ahash_digest) from [<7f800d03>] (test_ahash_speed.constprop.6+0x24a/0x4e4 [tcrypt])
[<7f800d03>] (test_ahash_speed.constprop.6 [tcrypt]) from [<7f802fd5>] (do_test+0x1898/0x2058 [tcrypt])
[<7f802fd5>] (do_test [tcrypt]) from [<7f80802f>] (tcrypt_mod_init+0x2e/0x63 [tcrypt])
[<7f80802f>] (tcrypt_mod_init [tcrypt]) from [<80009517>] (do_one_initcall+0xb3/0x134)
[<80009517>] (do_one_initcall) from [<80351ec7>] (do_init_module+0x3b/0x13c)
[<80351ec7>] (do_init_module) from [<8005cc3f>] (load_module+0x97b/0x9dc)
[<8005cc3f>] (load_module) from [<8005cd8d>] (SyS_finit_module+0x35/0x3e)
[<8005cd8d>] (SyS_finit_module) from [<8000d101>] (ret_fast_syscall+0x1/0x4c)
Code: 1aba 0152 eb00 0b02 (5882) 0f92

addr2line -f -i -e vmlinux 800155a0
page_zonenum
include/linux/mm.h:728
page_zone
include/linux/mm.h:881
dma_cache_maint_page
arch/arm/mm/dma-mapping.c:822

Signed-off-by: Horia Geant? <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agoLinux 4.3-rc2
Linus Torvalds [Sun, 20 Sep 2015 21:32:34 +0000 (14:32 -0700)]
Linux 4.3-rc2

9 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 20 Sep 2015 04:05:02 +0000 (21:05 -0700)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "Three fixes and a resulting cleanup for -rc2:

   - Andre Przywara reported that he was seeing a warning with the new
     cast inside DMA_ERROR_CODE's definition, and fixed the incorrect
     use.

   - Doug Anderson noticed that kgdb causes a "scheduling while atomic"
     bug.

   - OMAP5 folk noticed that their Thumb-2 compiled X servers crashed
     when enabling support to cover ARMv6 CPUs due to a kernel bug
     leaking some conditional context into the signal handler"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8425/1: kgdb: Don't try to stop the machine when setting breakpoints
  ARM: 8437/1: dma-mapping: fix build warning with new DMA_ERROR_CODE definition
  ARM: get rid of needless #if in signal handling code
  ARM: fix Thumb2 signal handling when ARMv6 is enabled

9 years agoMerge tag 'linux-kselftest-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 20 Sep 2015 03:57:45 +0000 (20:57 -0700)]
Merge tag 'linux-kselftest-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This update contains 7 fixes for problems ranging from build failurs
  to incorrect error reporting"

* tag 'linux-kselftest-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: exec: revert to default emit rule
  selftests: change install command to rsync
  selftests: mqueue: simplify the Makefile
  selftests: mqueue: allow extra cflags
  selftests: rename jump label to static_keys
  selftests/seccomp: add support for s390
  seltests/zram: fix syntax error

9 years agoMerge tag 'pm+acpi-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sun, 20 Sep 2015 03:41:31 +0000 (20:41 -0700)]
Merge tag 'pm+acpi-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael Wysocki:
 "Included are: a somewhat late devfreq update which however is mostly
  fixes and cleanups with one new thing only (the PPMUv2 support on
  Exynos5433), an ACPI cpufreq driver fixup and two ACPI core cleanups
  related to preprocessor directives.

  Specifics:

   - Fix a memory allocation size in the devfreq core (Xiaolong Ye).

   - Fix a mistake in the exynos-ppmu DT binding (Javier Martinez
     Canillas).

   - Add support for PPMUv2 ((Platform Performance Monitoring Unit
     version 2.0) on the Exynos5433 SoCs (Chanwoo Choi).

   - Fix a type casting bug in the Exynos PPMU code (MyungJoo Ham).

   - Assorted devfreq code cleanups and optimizations (Javi Merino,
     MyungJoo Ham, Viresh Kumar).

   - Fix up the ACPI cpufreq driver to use a more lightweight way to get
     to its private data in the ->get() callback (Rafael J Wysocki).

   - Fix a CONFIG_ prefix bug in one of the ACPI drivers and make the
     ACPI subsystem use IS_ENABLED() instead of #ifdefs in function
     bodies (Sudeep Holla)"

* tag 'pm+acpi-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()
  ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED()
  ACPI: int340x_thermal: add missing CONFIG_ prefix
  PM / devfreq: Fix incorrect type issue.
  PM / devfreq: tegra: Update governor to use devfreq_update_stats()
  PM / devfreq: comments for get_dev_status usage updated
  PM / devfreq: drop comment about thermal setting max_freq
  PM / devfreq: cache the last call to get_dev_status()
  PM / devfreq: Drop unlikely before IS_ERR(_OR_NULL)
  PM / devfreq: exynos-ppmu: bit-wise operation bugfix.
  PM / devfreq: exynos-ppmu: Update documentation to support PPMUv2
  PM / devfreq: exynos-ppmu: Add the support of PPMUv2 for Exynos5433
  PM / devfreq: event: Remove incorrect property in exynos-ppmu DT binding

9 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 20 Sep 2015 03:17:40 +0000 (20:17 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A few driver fixes for tegra, rockchip, and st SoCs and a two-liner in
  the framework to avoid oops when get_parent ops return out of range
  values on tegra platforms"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  drivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x
  clk: check for invalid parent index of orphans in __clk_init()
  clk: tegra: dfll: Properly protect OPP list
  clk: rockchip: add critical clock for rk3368

9 years agoMerge tag 'led-fixes-for-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 20 Sep 2015 03:10:30 +0000 (20:10 -0700)]
Merge tag 'led-fixes-for-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED fixes from Jacek Anaszewski:
 - fix module autoload for six OF platform drivers (aat1290, bcm6328,
   bcm6358, ktd2692, max77693, ns2)
 - aat1290: add missing static modifier
 - ipaq-micro: add missing LEDS_CLASS dependency
 - lp55xx: correct Kconfig dependecy for f/w user helper

* tag 'led-fixes-for-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds:lp55xx: Correct Kconfig dependency for f/w user helper
  leds: leds-ipaq-micro: Add LEDS_CLASS dependency
  leds: aat1290: add 'static' modifier to init_mm_current_scale
  leds: leds-ns2: Fix module autoload for OF platform driver
  leds: max77693: Fix module autoload for OF platform driver
  leds: ktd2692: Fix module autoload for OF platform driver
  leds: bcm6358: Fix module autoload for OF platform driver
  leds: bcm6328: Fix module autoload for OF platform driver
  leds: aat1290: Fix module autoload for OF platform driver

9 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Linus Torvalds [Sun, 20 Sep 2015 03:04:11 +0000 (20:04 -0700)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 "The new hfi1 driver in staging/rdma has had a number of fixup patches
  since being added to the tree.  This is the first batch of those fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/hfi: Properly set permissions for user device files
  IB/hfi1: mask vs shift confusion
  IB/hfi1: clean up some defines
  IB/hfi1: info leak in get_ctxt_info()
  IB/hfi1: fix a locking bug
  IB/hfi1: checking for NULL instead of IS_ERR
  IB/hfi1: fix sdma_descq_cnt parameter parsing
  IB/hfi1: fix copy_to/from_user() error handling
  IB/hfi1: fix pstateinfo from returning improperly byteswapped value

9 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Sun, 20 Sep 2015 02:13:03 +0000 (19:13 -0700)]
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:

 - a boot regression (since v4.2) fix for some ARM configurations from
   Tyler

 - regression (since v4.1) fixes for mkfs.xfs on a DAX enabled device
   from Jeff.  These are tagged for -stable.

 - a pair of locking fixes from Axel that are hidden from lockdep since
   they involve device_lock().  The "btt" one is tagged for -stable, the
   other only applies to the new "pfn" mechanism in v4.3.

 - a fix for the pmem ->rw_page() path to use wmb_pmem() from Ross.

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  mm: fix type cast in __pfn_to_phys()
  pmem: add proper fencing to pmem_rw_page()
  libnvdimm: pfn_devs: Fix locking in namespace_store
  libnvdimm: btt_devs: Fix locking in namespace_store
  blockdev: don't set S_DAX for misaligned partitions
  dax: fix O_DIRECT I/O to the last block of a blockdev

9 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Sun, 20 Sep 2015 01:57:09 +0000 (18:57 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "This is a bit bigger than it should be, but I could (did) not want to
  send it off last week due to both wanting extra testing, and expecting
  a fix for the bounce regression as well.  In any case, this contains:

   - Fix for the blk-merge.c compilation warning on gcc 5.x from me.

   - A set of back/front SG gap merge fixes, from me and from Sagi.
     This ensures that we honor SG gapping for integrity payloads as
     well.

   - Two small fixes for null_blk from Matias, fixing a leak and a
     capacity propagation issue.

   - A blkcg fix from Tejun, fixing a NULL dereference.

   - A fast clone optimization from Ming, fixing a performance
     regression since the arbitrarily sized bio's were introduced.

   - Also from Ming, a regression fix for bouncing IOs"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: fix bounce_end_io
  block: blk-merge: fast-clone bio when splitting rw bios
  block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg
  block: Copy a user iovec if it includes gaps
  block: Refuse adding appending a gapped integrity page to a bio
  block: Refuse request/bio merges with gaps in the integrity payload
  block: Check for gaps on front and back merges
  null_blk: fix wrong capacity when bs is not 512 bytes
  null_blk: fix memory leak on cleanup
  block: fix bogus compiler warnings in blk-merge.c

9 years agofs-writeback: unplug before cond_resched in writeback_sb_inodes
Chris Mason [Fri, 18 Sep 2015 17:35:08 +0000 (13:35 -0400)]
fs-writeback: unplug before cond_resched in writeback_sb_inodes

Commit 505a666ee3fc ("writeback: plug writeback in wb_writeback() and
writeback_inodes_wb()") has us holding a plug during writeback_sb_inodes,
which increases the merge rate when relatively contiguous small files
are written by the filesystem.  It helps both on flash and spindles.

For an fs_mark workload creating 4K files in parallel across 8 drives,
this commit improves performance ~9% more by unplugging before calling
cond_resched().  cond_resched() doesn't trigger an implicit unplug, so
explicitly getting the IO down to the device before scheduling reduces
latencies for anyone waiting on clean pages.

It also cuts down on how often we use kblockd to unplug, which means
less work bouncing from one workqueue to another.

Many more details about how we got here:

  https://lkml.org/lkml/2015/9/11/570

Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agomm: fix type cast in __pfn_to_phys()
Tyler Baker [Sat, 19 Sep 2015 07:58:10 +0000 (03:58 -0400)]
mm: fix type cast in __pfn_to_phys()

The various definitions of __pfn_to_phys() have been consolidated to
use a generic macro in include/asm-generic/memory_model.h. This hit
mainline in the form of 012dcef3f058 "mm: move __phys_to_pfn and
__pfn_to_phys to asm/generic/memory_model.h". When the generic macro
was implemented the type cast to phys_addr_t was dropped which caused
boot regressions on ARM platforms with more than 4GB of memory and
LPAE enabled.

It was suggested to use PFN_PHYS() defined in include/linux/pfn.h
as provides the correct logic and avoids further duplication.

Reported-by: kernelci.org bot <bot@kernelci.org>
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoMerge branch 'acpi-bus'
Rafael J. Wysocki [Fri, 18 Sep 2015 21:07:46 +0000 (23:07 +0200)]
Merge branch 'acpi-bus'

* acpi-bus:
  ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED()
  ACPI: int340x_thermal: add missing CONFIG_ prefix

9 years agoMerge branches 'pm-cpufreq' and 'pm-devfreq'
Rafael J. Wysocki [Fri, 18 Sep 2015 21:05:28 +0000 (23:05 +0200)]
Merge branches 'pm-cpufreq' and 'pm-devfreq'

* pm-cpufreq:
  cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()

* pm-devfreq:
  PM / devfreq: Fix incorrect type issue.
  PM / devfreq: tegra: Update governor to use devfreq_update_stats()
  PM / devfreq: comments for get_dev_status usage updated
  PM / devfreq: drop comment about thermal setting max_freq
  PM / devfreq: cache the last call to get_dev_status()
  PM / devfreq: Drop unlikely before IS_ERR(_OR_NULL)
  PM / devfreq: exynos-ppmu: bit-wise operation bugfix.
  PM / devfreq: exynos-ppmu: Update documentation to support PPMUv2
  PM / devfreq: exynos-ppmu: Add the support of PPMUv2 for Exynos5433
  PM / devfreq: event: Remove incorrect property in exynos-ppmu DT binding

9 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 18 Sep 2015 16:28:20 +0000 (09:28 -0700)]
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes and cleanups from Michael Tsirkin:
 "This fixes the virtio-test tool, and improves the error handling for
  virtio-ccw"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio/s390: handle failures of READ_VQ_CONF ccw
  tools/virtio: propagate V=X to kernel build
  vhost: move features to core
  tools/virtio: fix build after 4.2 changes

9 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 18 Sep 2015 16:23:08 +0000 (09:23 -0700)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Mostly stable material, a lot of ARM fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (22 commits)
  sched: access local runqueue directly in single_task_running
  arm/arm64: KVM: Remove 'config KVM_ARM_MAX_VCPUS'
  arm64: KVM: Remove all traces of the ThumbEE registers
  arm: KVM: Disable virtual timer even if the guest is not using it
  arm64: KVM: Disable virtual timer even if the guest is not using it
  arm/arm64: KVM: vgic: Check for !irqchip_in_kernel() when mapping resources
  KVM: s390: Replace incorrect atomic_or with atomic_andnot
  arm: KVM: Fix incorrect device to IPA mapping
  arm64: KVM: Fix user access for debug registers
  KVM: vmx: fix VPID is 0000H in non-root operation
  KVM: add halt_attempted_poll to VCPU stats
  kvm: fix zero length mmio searching
  kvm: fix double free for fast mmio eventfd
  kvm: factor out core eventfd assign/deassign logic
  kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd
  KVM: make the declaration of functions within 80 characters
  KVM: arm64: add workaround for Cortex-A57 erratum #852523
  KVM: fix polling for guest halt continued even if disable it
  arm/arm64: KVM: Fix PSCI affinity info return value for non valid cores
  arm64: KVM: set {v,}TCR_EL2 RES1 bits
  ...

9 years agoIB/hfi: Properly set permissions for user device files
Ira Weiny [Thu, 17 Sep 2015 17:47:49 +0000 (13:47 -0400)]
IB/hfi: Properly set permissions for user device files

Some of the device files are required to be user accessible for PSM while
most should remain accessible only by root.

Add a parameter to hfi1_cdev_init which controls if the user should have access
to this device which places it in a different class with the appropriate
devnode callback.

In addition set the devnode call back for the existing class to be a bit more
explicit for those permissions.

Finally remove the unnecessary null check before class_destroy

Tested-by: Donald Dutile <ddutile@redhat.com>
Signed-off-by: Haralanov, Mitko (mitko.haralanov@intel.com)
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: mask vs shift confusion
Dan Carpenter [Wed, 16 Sep 2015 16:03:45 +0000 (19:03 +0300)]
IB/hfi1: mask vs shift confusion

We are shifting by the _MASK macros instead of the _SHIFT ones.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: clean up some defines
Dan Carpenter [Wed, 16 Sep 2015 16:02:54 +0000 (19:02 +0300)]
IB/hfi1: clean up some defines

I added spaces around operators so it matches kernel style because
normally "-1ULL" is a number and " - 1" is a subtract operation.  Also
removed some superflous "ULL" types so "1ULL" becomes "1".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: info leak in get_ctxt_info()
Dan Carpenter [Wed, 16 Sep 2015 06:42:25 +0000 (09:42 +0300)]
IB/hfi1: info leak in get_ctxt_info()

The cinfo struct has a hole after the last struct member so we need to
zero it out.  Otherwise we disclose some uninitialized stack data.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix a locking bug
Dan Carpenter [Wed, 16 Sep 2015 06:22:51 +0000 (09:22 +0300)]
IB/hfi1: fix a locking bug

mutex_trylock() returns zero on failure, not EBUSY.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: checking for NULL instead of IS_ERR
Dan Carpenter [Wed, 16 Sep 2015 06:22:20 +0000 (09:22 +0300)]
IB/hfi1: checking for NULL instead of IS_ERR

__get_txreq() returns an ERR_PTR() but this checks for NULL so it would
oops on failure.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix sdma_descq_cnt parameter parsing
Mike Marciniszyn [Tue, 15 Sep 2015 14:19:27 +0000 (10:19 -0400)]
IB/hfi1: fix sdma_descq_cnt parameter parsing

The boolean tests should have been or-ed.

Reported-by: David Binderman <dcb314@hotmail.com>
Reviewed-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix copy_to/from_user() error handling
Dan Carpenter [Tue, 15 Sep 2015 10:35:25 +0000 (13:35 +0300)]
IB/hfi1: fix copy_to/from_user() error handling

copy_to/from_user() returns the number of bytes which we were not able
to copy.  It doesn't return an error code.

Also a couple places had a printk() on error and I removed that because
people can take advantage of it to fill /var/log/messages with spam.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix pstateinfo from returning improperly byteswapped value
Ira Weiny [Wed, 9 Sep 2015 05:28:21 +0000 (01:28 -0400)]
IB/hfi1: fix pstateinfo from returning improperly byteswapped value

Byteswap link_width_downgrade_*_active values before sending on the wire.  In
addition properly define the Port State Info structure.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Christian Gomez <christian.gomez@intel.com>
Signed-off-by: Rimmer, Todd <todd.rimmer@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 18 Sep 2015 15:11:42 +0000 (08:11 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "This is a rather large update post rc1 due to the final steps of
  cleanups and API changes which had to wait for the preparatory patches
  to hit your tree.

   - Regression fixes for ARM GIC irqchips

   - Regression fixes and lockdep anotations for renesas irq chips

   - The leftovers of the cleanup and preparatory patches which have
     been ignored by maintainers

   - Final conversions of the newly merged users of obsolete APIs

   - Final removal of obsolete APIs

   - Final removal of ARM artifacts which had been introduced during the
     conversion of ARM to the generic interrupt code.

   - Final split of the irq_data into chip specific and common data to
     reflect the needs of hierarchical irq domains.

   - Treewide removal of the first argument of interrupt flow handlers,
     i.e. the irq number, which is not used by the majority of handlers
     and simple to retrieve from the other argument the irq descriptor.

   - A few comment updates and build warning fixes"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  arm64: Remove ununsed set_irq_flags
  ARM: Remove ununsed set_irq_flags
  sh: Kill off set_irq_flags usage
  irqchip: Kill off set_irq_flags usage
  gpu/drm: Kill off set_irq_flags usage
  genirq: Remove irq argument from irq flow handlers
  genirq: Move field 'msi_desc' from irq_data into irq_common_data
  genirq: Move field 'affinity' from irq_data into irq_common_data
  genirq: Move field 'handler_data' from irq_data into irq_common_data
  genirq: Move field 'node' from irq_data into irq_common_data
  irqchip/gic-v3: Use IRQD_FORWARDED_TO_VCPU flag
  irqchip/gic: Use IRQD_FORWARDED_TO_VCPU flag
  genirq: Provide IRQD_FORWARDED_TO_VCPU status flag
  genirq: Simplify irq_data_to_desc()
  genirq: Remove __irq_set_handler_locked()
  pinctrl/pistachio: Use irq_set_handler_locked
  gpio: vf610: Use irq_set_handler_locked
  powerpc/mpc8xx: Use irq_set_handler_locked()
  powerpc/ipic: Use irq_set_handler_locked()
  powerpc/cpm2: Use irq_set_handler_locked()
  ...

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 18 Sep 2015 15:06:28 +0000 (08:06 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Thomas Gleixner:
 "A single regression fix for the x86 dma allocator which got wreckaged
  in the merge window"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/pci/dma: Fix gfp flags for coherent DMA memory allocation

9 years agoMerge tag 'powerpc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 18 Sep 2015 15:01:06 +0000 (08:01 -0700)]
Merge tag 'powerpc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix 32-bit TCE table init in kdump kernel from Nish

 - Fix kdump with non-power-of-2 crashkernel= from Nish

 - Abort cxl_pci_enable_device_hook() if PCI channel is offline from
   Andrew

 - Fix to release DRC when configure_connector() fails from Bharata

 - Wire up sys_userfaultfd()

 - Fix race condition in tearing down MSI interrupts from Paul

 - Fix unbalanced pci_dev_get() in cxl_probe() from Daniel

 - Fix cxl build failure due to -Wunused-variable gcc behaviour change
   from Ian

 - Tell the toolchain to use ABI v2 when building an LE boot wrapper
   from Benh

 - Fix THP to recompute hash value after a failed update from Aneesh

 - 32-bit memcpy/memset: only use dcbz once cache is enabled from
   Christophe

* tag 'powerpc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc32: memset: only use dcbz once cache is enabled
  powerpc32: memcpy: only use dcbz once cache is enabled
  powerpc/mm: Recompute hash value after a failed update
  powerpc/boot: Specify ABI v2 when building an LE boot wrapper
  cxl: Fix build failure due to -Wunused-variable behaviour change
  cxl: Fix unbalanced pci_dev_get in cxl_probe
  powerpc/MSI: Fix race condition in tearing down MSI interrupts
  powerpc: Wire up sys_userfaultfd()
  powerpc/pseries: Release DRC when configure_connector fails
  cxl: abort cxl_pci_enable_device_hook() if PCI channel is offline
  powerpc/powernv/pci-ioda: fix kdump with non-power-of-2 crashkernel=
  powerpc/powernv/pci-ioda: fix 32-bit TCE table init in kdump kernel

9 years agosched: access local runqueue directly in single_task_running
Dominik Dingel [Fri, 18 Sep 2015 09:27:45 +0000 (11:27 +0200)]
sched: access local runqueue directly in single_task_running

Commit 2ee507c47293 ("sched: Add function single_task_running to let a task
check if it is the only task running on a cpu") referenced the current
runqueue with the smp_processor_id.  When CONFIG_DEBUG_PREEMPT is enabled,
that is only allowed if preemption is disabled or the currrent task is
bound to the local cpu (e.g. kernel worker).

With commit f78195129963 ("kvm: add halt_poll_ns module parameter") KVM
calls single_task_running. If CONFIG_DEBUG_PREEMPT is enabled that
generates a lot of kernel messages.

To avoid adding preemption in that cases, as it would limit the usefulness,
we change single_task_running to access directly the cpu local runqueue.

Cc: Tim Chen <tim.c.chen@linux.intel.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Fixes: 2ee507c472939db4b146d545352b8a7c79ef47f8
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
9 years agoMerge tag 'platform-drivers-x86-v4.3-2' of git://git.infradead.org/users/dvhart/linux...
Linus Torvalds [Fri, 18 Sep 2015 04:41:02 +0000 (21:41 -0700)]
Merge tag 'platform-drivers-x86-v4.3-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull x86 platform driver fixes from Darren Hart:
 "Fix an issue introduced by the previous major toshiba rework.  Add a
  quirk.  Workaround a few platform specific firmware items.  One
  cleanup to wmi I inadvertently dropped from a previous pull request.

  Details:

  hp-wmi:
   - limit hotkey enable

  toshiba_acpi:
   - Fix hotkeys registration on some toshiba models
   - Fix USB Sleep and Music always disabled

  wmi:
   - Remove private %pUL implementation

  asus-nb-wmi:
   - Add wapf=4 quirk for X456UA/X456UF"

* tag 'platform-drivers-x86-v4.3-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  hp-wmi: limit hotkey enable
  toshiba_acpi: Fix hotkeys registration on some toshiba models
  toshiba_acpi: Fix USB Sleep and Music always disabled
  wmi: Remove private %pUL implementation
  asus-nb-wmi: Add wapf=4 quirk for X456UA/X456UF

9 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 18 Sep 2015 04:16:47 +0000 (21:16 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from ANdrew Morton:
 "8 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  revert "mm: make sure all file VMAs have ->vm_ops set"
  MAINTAINERS: update LTP mailing list
  userfaultfd: add missing mmput() in error path
  lib/string_helpers.c: fix infinite loop in string_get_size()
  alpha: lib: export __delay
  alpha: io: define ioremap_uc
  kasan: fix last shadow judgement in memory_is_poisoned_16()
  zram: fix possible use after free in zcomp_create()

9 years agorevert "mm: make sure all file VMAs have ->vm_ops set"
Andrew Morton [Thu, 17 Sep 2015 23:02:00 +0000 (16:02 -0700)]
revert "mm: make sure all file VMAs have ->vm_ops set"

Revert commit 6dc296e7df4c "mm: make sure all file VMAs have ->vm_ops
set".

Will Deacon reports that it "causes some mmap regressions in LTP, which
appears to use a MAP_PRIVATE mmap of /dev/zero as a way to get anonymous
pages in some of its tests (specifically mmap10 [1])".

William Shuman reports Oracle crashes.

So revert the patch while we work out what to do.

Reported-by: William Shuman <wshuman3@gmail.com>
Reported-by: Will Deacon <will.deacon@arm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMAINTAINERS: update LTP mailing list
Cyril Hrubis [Thu, 17 Sep 2015 23:01:57 +0000 (16:01 -0700)]
MAINTAINERS: update LTP mailing list

[akpm@linux-foundation.org: Wanlong Gao has moved]
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
Cc: Jan Stancek <jstancek@redhat.com>
Cc: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
Cc: Alexey Kodanev <alexey.kodanev@oracle.com>
Cc: Wanlong Gao <wanlong.gao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agouserfaultfd: add missing mmput() in error path
Eric Biggers [Thu, 17 Sep 2015 23:01:54 +0000 (16:01 -0700)]
userfaultfd: add missing mmput() in error path

This fixes a memleak if anon_inode_getfile() fails in userfaultfd().

Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agolib/string_helpers.c: fix infinite loop in string_get_size()
Vitaly Kuznetsov [Thu, 17 Sep 2015 23:01:51 +0000 (16:01 -0700)]
lib/string_helpers.c: fix infinite loop in string_get_size()

Some string_get_size() calls (e.g.:
 string_get_size(1, 512, STRING_UNITS_10, ..., ...)
 string_get_size(15, 64, STRING_UNITS_10, ..., ...)
) result in an infinite loop. The problem is that if size is equal to
divisor[units]/blk_size and is smaller than divisor[units] we'll end
up with size == 0 when we start doing sf_cap calculations:

For string_get_size(1, 512, STRING_UNITS_10, ..., ...) case:
   ...
   remainder = do_div(size, divisor[units]); -> size is 0, remainder is 1
   remainder *= blk_size; -> remainder is 512
   ...
   size *= blk_size; -> size is still 0
   size += remainder / divisor[units]; -> size is still 0

The caller causing the issue is sd_read_capacity(), the problem was
noticed on Hyper-V, such weird size was reported by host when scanning
collides with device removal.  This is probably a separate issue worth
fixing, this patch is intended to prevent the library routine from
infinite looping.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: James Bottomley <JBottomley@Odin.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoalpha: lib: export __delay
Sudip Mukherjee [Thu, 17 Sep 2015 23:01:49 +0000 (16:01 -0700)]
alpha: lib: export __delay

__delay was not exported as a result while building with allmodconfig we
were getting build error of undefined symbol.  __delay is being used by:
drivers/net/phy/mdio-octeon.c

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoalpha: io: define ioremap_uc
Sudip Mukherjee [Thu, 17 Sep 2015 23:01:46 +0000 (16:01 -0700)]
alpha: io: define ioremap_uc

ioremap_uc was not defined and as a result while building with
allmodconfig were getting build error of: implicit declaration of
function 'ioremap_uc'.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agokasan: fix last shadow judgement in memory_is_poisoned_16()
Xishi Qiu [Thu, 17 Sep 2015 23:01:43 +0000 (16:01 -0700)]
kasan: fix last shadow judgement in memory_is_poisoned_16()

The shadow which correspond 16 bytes memory may span 2 or 3 bytes.  If
the memory is aligned on 8, then the shadow takes only 2 bytes.  So we
check "shadow_first_bytes" is enough, and need not to call
"memory_is_poisoned_1(addr + 15);".  But the code "if
(likely(!last_byte))" is wrong judgement.

e.g.  addr=0, so last_byte = 15 & KASAN_SHADOW_MASK = 7, then the code
will continue to call "memory_is_poisoned_1(addr + 15);"

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrey Konovalov <adech.fo@gmail.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michal Marek <mmarek@suse.cz>
Cc: <zhongjiang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agozram: fix possible use after free in zcomp_create()
Luis Henriques [Thu, 17 Sep 2015 23:01:40 +0000 (16:01 -0700)]
zram: fix possible use after free in zcomp_create()

zcomp_create() verifies the success of zcomp_strm_{multi,single}_create()
through comp->stream, which can potentially be pointing to memory that
was freed if these functions returned an error.

While at it, replace a 'ERR_PTR(-ENOMEM)' by a more generic
'ERR_PTR(error)' as in the future zcomp_strm_{multi,siggle}_create()
could return other error codes.  Function documentation updated
accordingly.

Fixes: beca3ec71fe5 ("zram: add multi stream functionality")
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agohp-wmi: limit hotkey enable
Kyle Evans [Fri, 11 Sep 2015 15:40:17 +0000 (10:40 -0500)]
hp-wmi: limit hotkey enable

Do not write initialize magic on systems that do not have
feature query 0xb. Fixes Bug #82451.

Redefine FEATURE_QUERY to align with 0xb and FEATURE2 with 0xd
for code clearity.

Add a new test function, hp_wmi_bios_2008_later() & simplify
hp_wmi_bios_2009_later(), which fixes a bug in cases where
an improper value is returned. Probably also fixes Bug #69131.

Add missing __init tag.

Signed-off-by: Kyle Evans <kvans32@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Thu, 17 Sep 2015 19:32:40 +0000 (12:32 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Pull Ceph fixes from Sage Weil:
 "These are both fixes to the new and improved keepalive2 behavior"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  libceph: advertise support for keepalive2
  libceph: don't access invalid memory in keepalive2 path

9 years agoMerge tag 'for-v4.3-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux...
Linus Torvalds [Thu, 17 Sep 2015 19:25:42 +0000 (12:25 -0700)]
Merge tag 'for-v4.3-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply fixes from Sebastian Reichel:
 "twl4030-charger fixes"

* tag 'for-v4.3-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
  twl4030_charger: fix another compile error
  Revert "twl4030_charger: correctly handle -EPROBE_DEFER from devm_usb_get_phy_by_node"

9 years agodrivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x
Gabriel Fernandez [Wed, 16 Sep 2015 07:42:59 +0000 (09:42 +0200)]
drivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x

Use a generic name for this kind of PLL

Correction in dts files are already done here:
commit 5eb26c605909 ("ARM: STi: DT: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x")

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Thu, 17 Sep 2015 18:28:17 +0000 (11:28 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "This addresses some problems with filesystem writeback due to the
  recently merged hardware DBM patches, which caused us to treat some
  read-only pages as dirty.

  There are also some other, less significant fixes that are described
  in the summary below:

  A mixture of fixes for regressions introduced during the merge window,
  some longer standing problems that we spotted and a couple of hardware
  errata.  The main changes are:

   - Fix fallout from the h/w DBM patches, causing filesystem writeback
     issues on both v8 and v8.1 CPUs

   - Workaround for Cortex-A53 erratum #843419 in the module loader

   - Fix for long-standing issue with compat big-endian signal handlers
     using the saved floating point state"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: errata: add module build workaround for erratum #843419
  arm64: compat: fix vfp save/restore across signal handlers in big-endian
  arm64: cpu hotplug: ensure we mask out CPU_TASKS_FROZEN in notifiers
  arm64: head.S: initialise mdcr_el2 in el2_setup
  arm64: enable generic idle loop
  arm64: pgtable: use a single bit for PTE_WRITE regardless of DBM
  arm64: Fix pte_modify() to preserve the hardware dirty information
  arm64: Fix the pte_hw_dirty() check when AF/DBM is enabled
  arm64: dma-mapping: check whether cma area is initialized or not