GitHub/LineageOS/G12/android_kernel_amlogic_linux-4.9.git
9 years agocrypto: chacha20 - Add a SSSE3 SIMD variant for x86_64
Martin Willi [Thu, 16 Jul 2015 17:14:01 +0000 (19:14 +0200)]
crypto: chacha20 - Add a SSSE3 SIMD variant for x86_64

Implements an x86_64 assembler driver for the ChaCha20 stream cipher. This
single block variant works on a single state matrix using SSE instructions.
It requires SSSE3 due the use of pshufb for efficient 8/16-bit rotate
operations.

For large messages, throughput increases by ~65% compared to
chacha20-generic:

testing speed of chacha20 (chacha20-generic) encryption
test 0 (256 bit key, 16 byte blocks): 45089207 operations in 10 seconds (721427312 bytes)
test 1 (256 bit key, 64 byte blocks): 43839521 operations in 10 seconds (2805729344 bytes)
test 2 (256 bit key, 256 byte blocks): 12702056 operations in 10 seconds (3251726336 bytes)
test 3 (256 bit key, 1024 byte blocks): 3371173 operations in 10 seconds (3452081152 bytes)
test 4 (256 bit key, 8192 byte blocks): 422468 operations in 10 seconds (3460857856 bytes)

testing speed of chacha20 (chacha20-simd) encryption
test 0 (256 bit key, 16 byte blocks): 43141886 operations in 10 seconds (690270176 bytes)
test 1 (256 bit key, 64 byte blocks): 46845874 operations in 10 seconds (2998135936 bytes)
test 2 (256 bit key, 256 byte blocks): 18458512 operations in 10 seconds (4725379072 bytes)
test 3 (256 bit key, 1024 byte blocks): 5360533 operations in 10 seconds (5489185792 bytes)
test 4 (256 bit key, 8192 byte blocks): 692846 operations in 10 seconds (5675794432 bytes)

Benchmark results from a Core i5-4670T.

Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: chacha20 - Export common ChaCha20 helpers
Martin Willi [Thu, 16 Jul 2015 17:14:00 +0000 (19:14 +0200)]
crypto: chacha20 - Export common ChaCha20 helpers

As architecture specific drivers need a software fallback, export a
ChaCha20 en-/decryption function together with some helpers in a header
file.

Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: tcrypt - Add ChaCha20/Poly1305 speed tests
Martin Willi [Thu, 16 Jul 2015 17:13:59 +0000 (19:13 +0200)]
crypto: tcrypt - Add ChaCha20/Poly1305 speed tests

Adds individual ChaCha20 and Poly1305 and a combined rfc7539esp AEAD speed
test using mode numbers 214, 321 and 213. For Poly1305 we add a specific
speed template, as it expects the key prepended to the input data.

Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: chacha20poly1305 - Convert to new AEAD interface
Herbert Xu [Thu, 16 Jul 2015 04:35:08 +0000 (12:35 +0800)]
crypto: chacha20poly1305 - Convert to new AEAD interface

This patch converts rfc7539 and rfc7539esp to the new AEAD interface.
The test vectors for rfc7539esp have also been updated to include
the IV.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Martin Willi <martin@strongswan.org>
9 years agocrypto: rsa - limit supported key lengths
Tadeusz Struk [Wed, 15 Jul 2015 22:28:43 +0000 (15:28 -0700)]
crypto: rsa - limit supported key lengths

Introduce constrains for RSA keys lengths.
Only key lengths of 512, 1024, 1536, 2048, 3072, and 4096 bits
will be supported.

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 RSA algorithm
Tadeusz Struk [Wed, 15 Jul 2015 22:28:38 +0000 (15:28 -0700)]
crypto: qat - Add support for RSA algorithm

Add RSA support to QAT driver.
Removed unused RNG rings.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: qat - add MMP FW support to accel engine
Tadeusz Struk [Wed, 15 Jul 2015 22:28:32 +0000 (15:28 -0700)]
crypto: qat - add MMP FW support to accel engine

Add code that loads the MMP firmware

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 MMP FW
Pingchao Yang [Wed, 15 Jul 2015 22:28:26 +0000 (15:28 -0700)]
crypto: qat - add support for MMP FW

Load Modular Math Processor(MMP) firmware into QAT devices to support
public key algorithm acceleration.

Signed-off-by: Pingchao Yang <pingchao.yang@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: testmgr - Reenable rfc4309 test
Herbert Xu [Tue, 14 Jul 2015 08:53:22 +0000 (16:53 +0800)]
crypto: testmgr - Reenable rfc4309 test

Now that all implementations of rfc4309 have been converted we can
reenable the test.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx - Convert ccm to new AEAD interface
Herbert Xu [Tue, 14 Jul 2015 08:53:21 +0000 (16:53 +0800)]
crypto: nx - Convert ccm to new AEAD interface

This patch converts the nx ccm and 4309 implementations to the
new AEAD interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: aes-ce-ccm - Convert to new AEAD interface
Herbert Xu [Tue, 14 Jul 2015 08:53:19 +0000 (16:53 +0800)]
crypto: aes-ce-ccm - Convert to new AEAD interface

This patch converts the ARM64 aes-ce-ccm implementation to the
new AEAD interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
9 years agocrypto: ccm - Convert to new AEAD interface
Herbert Xu [Tue, 14 Jul 2015 08:53:18 +0000 (16:53 +0800)]
crypto: ccm - Convert to new AEAD interface

This patch converts generic ccm and its associated transforms to
the new AEAD interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: testmgr - Disable rfc4309 test and convert test vectors
Herbert Xu [Tue, 14 Jul 2015 08:53:17 +0000 (16:53 +0800)]
crypto: testmgr - Disable rfc4309 test and convert test vectors

This patch disables the rfc4309 test while the conversion to the
new seqiv calling convention takes place.  It also replaces the
rfc4309 test vectors with ones that will work with the new IV
convention.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: vmx - Adding enable_kernel_vsx() to access VSX instructions
Leonidas Da Silva Barbosa [Mon, 13 Jul 2015 16:51:39 +0000 (13:51 -0300)]
crypto: vmx - Adding enable_kernel_vsx() to access VSX instructions

vmx-crypto driver make use of some VSX instructions which are
only available if VSX is enabled. Running in cases where VSX
are not enabled vmx-crypto fails in a VSX exception.

In order to fix this enable_kernel_vsx() was added to turn on
VSX instructions for vmx-crypto.

Signed-off-by: Leonidas S. Barbosa <leosilva@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agopowerpc: Uncomment and make enable_kernel_vsx() routine available
Leonidas Da Silva Barbosa [Mon, 13 Jul 2015 16:51:01 +0000 (13:51 -0300)]
powerpc: Uncomment and make enable_kernel_vsx() routine available

enable_kernel_vsx() function was commented since anything was using
it. However, vmx-crypto driver uses VSX instructions which are
only available if VSX is enable. Otherwise it rises an exception oops.

This patch uncomment enable_kernel_vsx() routine and makes it available.

Signed-off-by: Leonidas S. Barbosa <leosilva@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: marvell/cesa - Drop owner assignment from platform_driver
Krzysztof Kozlowski [Fri, 10 Jul 2015 05:46:16 +0000 (14:46 +0900)]
crypto: marvell/cesa - Drop owner assignment from platform_driver

platform_driver does not need to set an owner because
platform_driver_register() will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: testmgr - Reenable rfc4106 test
Herbert Xu [Wed, 8 Jul 2015 23:17:34 +0000 (07:17 +0800)]
crypto: testmgr - Reenable rfc4106 test

Now that all implementations of rfc4106 have been converted we can
reenable the test.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: caam - Use new IV convention
Herbert Xu [Wed, 8 Jul 2015 23:17:33 +0000 (07:17 +0800)]
crypto: caam - Use new IV convention

This patch converts rfc4106 to the new calling convention where
the IV is now part of the AD and needs to be skipped.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx - Use new IV convention
Herbert Xu [Wed, 8 Jul 2015 23:17:31 +0000 (07:17 +0800)]
crypto: nx - Use new IV convention

This patch converts rfc4106 to the new calling convention where
the IV is now part of the AD and needs to be skipped.  This patch
also makes use of type-safe AEAD functions where possible.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: gcm - Use new IV convention
Herbert Xu [Wed, 8 Jul 2015 23:17:30 +0000 (07:17 +0800)]
crypto: gcm - Use new IV convention

This patch converts rfc4106 to the new calling convention where
the IV is now part of the AD and needs to be skipped.  This patch
also makes use of the new type-safe way of freeing instances.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: aesni - Use new IV convention
Herbert Xu [Wed, 8 Jul 2015 23:17:28 +0000 (07:17 +0800)]
crypto: aesni - Use new IV convention

This patch converts rfc4106 to the new calling convention where
the IV is now in the AD and needs to be skipped.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: tcrypt - Add support for new IV convention
Herbert Xu [Wed, 8 Jul 2015 23:17:26 +0000 (07:17 +0800)]
crypto: tcrypt - Add support for new IV convention

This patch allows the AEAD speed tests to cope with the new seqiv
calling convention as well as the old one.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: testmgr - Disable rfc4106 test and convert test vectors
Herbert Xu [Wed, 8 Jul 2015 23:17:25 +0000 (07:17 +0800)]
crypto: testmgr - Disable rfc4106 test and convert test vectors

This patch disables the rfc4106 test while the conversion to the
new seqiv calling convention takes place.  It also converts the
rfc4106 test vectors to the new format.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: aead - Propagate new AEAD implementation flag for IV generators
Herbert Xu [Wed, 8 Jul 2015 23:17:23 +0000 (07:17 +0800)]
crypto: aead - Propagate new AEAD implementation flag for IV generators

This patch allows the CRYPTO_ALG_AEAD_NEW flag to be propagated.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: seqiv - Replace seqniv with seqiv
Herbert Xu [Wed, 8 Jul 2015 23:17:22 +0000 (07:17 +0800)]
crypto: seqiv - Replace seqniv with seqiv

This patch replaces the seqniv generator with seqiv when the
underlying algorithm understands the new calling convention.

This not only makes more sense as now seqiv is solely responsible
for IV generation rather than also determining how the IV is going
to be used, it also allows for optimisations in the underlying
implementation.  For example, the space for the IV could be used
to add padding for authentication.

This patch also removes the unnecessary copying of IV to dst
during seqiv decryption as the IV is part of the AD and not cipher
text.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: echainiv - Fix encryption convention
Herbert Xu [Wed, 8 Jul 2015 23:17:20 +0000 (07:17 +0800)]
crypto: echainiv - Fix encryption convention

This patch fixes a bug where we were incorrectly including the
IV in the AD during encryption.  The IV must remain in the plain
text for it to be encrypted.

During decryption there is no need to copy the IV to dst because
it's now part of the AD.

This patch removes an unncessary check on authsize which would be
performed by the underlying decrypt call.

Finally this patch makes use of the type-safe init/exit functions.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: cryptd - Propagate new AEAD implementation flag
Herbert Xu [Wed, 8 Jul 2015 23:17:19 +0000 (07:17 +0800)]
crypto: cryptd - Propagate new AEAD implementation flag

This patch allows the CRYPTO_ALG_AEAD_NEW flag to be propagated.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: pcrypt - Propagate new AEAD implementation flag
Herbert Xu [Wed, 8 Jul 2015 23:17:18 +0000 (07:17 +0800)]
crypto: pcrypt - Propagate new AEAD implementation flag

This patch allows the CRYPTO_ALG_AEAD_NEW flag to be propagated.

It also restores the ASYNC bit that went missing during the AEAD
conversion.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: aead - Add type-safe function for freeing instances
Herbert Xu [Wed, 8 Jul 2015 23:17:17 +0000 (07:17 +0800)]
crypto: aead - Add type-safe function for freeing instances

This patch adds a type-safe function for freeing AEAD instances
to struct aead_instance.  This replaces the existing free function
in struct crypto_template which does not know the type of the
instance that it's freeing.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: api - Add instance free function to crypto_type
Herbert Xu [Wed, 8 Jul 2015 23:17:15 +0000 (07:17 +0800)]
crypto: api - Add instance free function to crypto_type

Currently the task of freeing an instance is given to the crypto
template.  However, it has no type information on the instance so
we have to resort to checking type information at runtime.

This patch introduces a free function to crypto_type that will be
used to free an instance.  This can then be used to free an instance
in a type-safe manner.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx/842 - Fix context corruption
Herbert Xu [Wed, 8 Jul 2015 13:40:39 +0000 (21:40 +0800)]
crypto: nx/842 - Fix context corruption

The transform context is shared memory and must not be written
to without locking.  This patch adds locking to nx-842 to prevent
context corruption.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: aead - Add aead_queue interface
Herbert Xu [Wed, 8 Jul 2015 04:15:14 +0000 (12:15 +0800)]
crypto: aead - Add aead_queue interface

This patch adds a type-safe queueing interface for AEAD.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: api - Remove unused __crypto_dequeue_request
Herbert Xu [Wed, 8 Jul 2015 03:55:30 +0000 (11:55 +0800)]
crypto: api - Remove unused __crypto_dequeue_request

The function __crypto_dequeue_request is completely unused.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Herbert Xu [Tue, 14 Jul 2015 06:55:32 +0000 (14:55 +0800)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

Merge the crypto tree to pull in the nx reentrancy patch.

9 years agocrypto: tcrypt - Fix AEAD speed tests
Vutla, Lokesh [Tue, 7 Jul 2015 15:31:49 +0000 (21:01 +0530)]
crypto: tcrypt - Fix AEAD speed tests

The AEAD speed tests doesn't do a wait_for_completition,
if the return value is EINPROGRESS or EBUSY.
Fixing it here.
Also add a test case for gcm(aes).

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: omap-aes - Use BIT() macro
Vutla, Lokesh [Tue, 7 Jul 2015 15:31:46 +0000 (21:01 +0530)]
crypto: omap-aes - Use BIT() macro

Use BIT()/GENMASK() macros for all register definitions instead of
hand-writing bit masks.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: omap-aes - Fix configuring of AES mode
Vutla, Lokesh [Tue, 7 Jul 2015 15:31:45 +0000 (21:01 +0530)]
crypto: omap-aes - Fix configuring of AES mode

AES_CTRL_REG is used to configure AES mode. Before configuring
any mode we need to make sure all other modes are reset or else
driver will misbehave. So mask all modes before configuring
any AES mode.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: omap-aes - Increase priority of hw accelerator
Vutla, Lokesh [Tue, 7 Jul 2015 15:31:44 +0000 (21:01 +0530)]
crypto: omap-aes - Increase priority of hw accelerator

Increasing the priority of omap-aes hw algos, in order to take
precedence over sw algos.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: omap-aes - Fix CTR mode
Vutla, Lokesh [Tue, 7 Jul 2015 15:31:43 +0000 (21:01 +0530)]
crypto: omap-aes - Fix CTR mode

Algo self tests are failing for CTR mode with omap-aes driver,
giving the following error:

[  150.053644]       omap_aes_crypt: request size is not exact amount of AES blocks
[  150.061262] alg: skcipher: encryption failed on test 5 for ctr-aes-omap: ret=22

This is because the input length is not aligned with AES_BLOCK_SIZE.
Adding support for omap-aes driver for inputs with length not aligned
with AES_BLOCK_SIZE.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx - Fix reentrancy bugs
Herbert Xu [Tue, 7 Jul 2015 09:30:25 +0000 (17:30 +0800)]
crypto: nx - Fix reentrancy bugs

This patch fixes a host of reentrancy bugs in the nx driver.  The
following algorithms are affected:

* CCM
* GCM
* CTR
* XCBC
* SHA256
* SHA512

The crypto API allows a single transform to be used by multiple
threads simultaneously.  For example, IPsec will use a single tfm
to process packets for a given SA.  As packets may arrive on
multiple CPUs that tfm must be reentrant.

The nx driver does try to deal with this by using a spin lock.
Unfortunately only the basic AES/CBC/ECB algorithms do this in
the correct way.

The symptom of these bugs may range from the generation of incorrect
output to memory corruption.

Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx - reduce chattiness of platform drivers
Nishanth Aravamudan [Mon, 6 Jul 2015 17:06:21 +0000 (10:06 -0700)]
crypto: nx - reduce chattiness of platform drivers

While we never would successfully load on the wrong machine type, there
is extra output by default regardless of machine type.

For instance, on a PowerVM LPAR, we see the following:

nx_compress_powernv: loading
nx_compress_powernv: no coprocessors found

even though those coprocessors could never be found.

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Cc: Dan Streetman <ddstreet@us.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: testmgr - add a chunking test for cbc(aes)
LABBE Corentin [Mon, 6 Jul 2015 11:37:33 +0000 (13:37 +0200)]
crypto: testmgr - add a chunking test for cbc(aes)

All tests for cbc(aes) use only blocks of data with a multiple of 4.
This test adds a test with some odd SG size.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: cryptd - Fix AEAD request context corruption
Herbert Xu [Mon, 6 Jul 2015 11:11:03 +0000 (19:11 +0800)]
crypto: cryptd - Fix AEAD request context corruption

The AEAD version of cryptd uses the same context for its own state
as well as that of the child.  In doing so it did not maintain the
proper ordering, thus resulting in potential state corruption where
the child will overwrite the state stored by cryptd.

This patch fixes and also sets the request size properly.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: arm - ignore generated SHA2 assembly files
Baruch Siach [Mon, 6 Jul 2015 04:03:37 +0000 (07:03 +0300)]
crypto: arm - ignore generated SHA2 assembly files

These files are generated since commits f2f770d74a8d (crypto: arm/sha256 - Add
optimized SHA-256/224, 2015-04-03) and c80ae7ca3726 (crypto: arm/sha512 -
accelerated SHA-512 using ARM generic ASM and NEON, 2015-05-08).

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx - do not emit extra output if status is disabled
Nishanth Aravamudan [Thu, 2 Jul 2015 22:40:09 +0000 (15:40 -0700)]
crypto: nx - do not emit extra output if status is disabled

If the device-tree indicates the nx-842 device's status is 'disabled',
we emit two messages:

nx_compress_pseries ibm,compression-v1: nx842_OF_upd_status: status 'disabled' is not 'okay'.
nx_compress_pseries ibm,compression-v1: nx842_OF_upd: device disabled

Given that 'disabled' is a valid state, and we are going to emit that
the device is disabled, only print out a non-'okay' status if it is not
'disabled'.

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx - rename nx842_{init, exit} to nx842_pseries_{init, exit}
Nishanth Aravamudan [Thu, 2 Jul 2015 22:39:21 +0000 (15:39 -0700)]
crypto: nx - rename nx842_{init, exit} to nx842_pseries_{init, exit}

While there is no technical reason that both nx-842.c and
nx-842-pseries.c can have the same name for the init/exit functions, it
is a bit confusing with initcall_debug. Rename the pseries specific
functions appropriately

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: nx - nx842_OF_upd_status should return ENODEV if device is not 'okay'
Nishanth Aravamudan [Thu, 2 Jul 2015 22:38:48 +0000 (15:38 -0700)]
crypto: nx - nx842_OF_upd_status should return ENODEV if device is not 'okay'

The current documention mentions explicitly that EINVAL should be
returned if the device is not available, but nx842_OF_upd_status()
always returns 0. However, nx842_probe() specifically checks for
non-ENODEV returns from nx842_of_upd() (which in turn calls
nx842_OF_upd_status()) and emits an extra error in that case. It seems
like the proper return code of a disabled device is ENODEV.

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: ccp - Provide support to autoload CCP driver
Tom Lendacky [Tue, 30 Jun 2015 17:57:14 +0000 (12:57 -0500)]
crypto: ccp - Provide support to autoload CCP driver

Add the necessary module device tables to the platform support to allow
for autoloading of the CCP driver. This will allow for the CCP's hwrng
support to be available without having to manually load the driver. The
module device table entry for the pci support is already present.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agocrypto: omap-des - Fix unmapping of dma channels
Vutla, Lokesh [Thu, 2 Jul 2015 13:03:28 +0000 (18:33 +0530)]
crypto: omap-des - Fix unmapping of dma channels

dma_unmap_sg() is being called twice after completing the
task. Looks like this is a copy paste error when creating
des driver.
With this the following warn appears during boot:

[    4.210457] ------------[ cut here ]------------
[    4.215114] WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:1080 check_unmap+0x710/0x9a0()
[    4.222899] omap-des 480a5000.des: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x00000000ab2ce000] [size=8 bytes]
[    4.236785] Modules linked in:
[    4.239860] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14.39-02999-g1bc045a-dirty #182
[    4.247918] [<c001678c>] (unwind_backtrace) from [<c0012574>] (show_stack+0x10/0x14)
[    4.255710] [<c0012574>] (show_stack) from [<c05a37e8>] (dump_stack+0x84/0xb8)
[    4.262977] [<c05a37e8>] (dump_stack) from [<c0046464>] (warn_slowpath_common+0x68/0x8c)
[    4.271107] [<c0046464>] (warn_slowpath_common) from [<c004651c>] (warn_slowpath_fmt+0x30/0x40)
[    4.279854] [<c004651c>] (warn_slowpath_fmt) from [<c02d50a4>] (check_unmap+0x710/0x9a0)
[    4.287991] [<c02d50a4>] (check_unmap) from [<c02d5478>] (debug_dma_unmap_sg+0x90/0x19c)
[    4.296128] [<c02d5478>] (debug_dma_unmap_sg) from [<c04a77d8>] (omap_des_done_task+0x1cc/0x3e4)
[    4.304963] [<c04a77d8>] (omap_des_done_task) from [<c004a090>] (tasklet_action+0x84/0x124)
[    4.313370] [<c004a090>] (tasklet_action) from [<c004a4ac>] (__do_softirq+0xf0/0x20c)
[    4.321235] [<c004a4ac>] (__do_softirq) from [<c004a840>] (irq_exit+0x98/0xec)
[    4.328500] [<c004a840>] (irq_exit) from [<c000f9ac>] (handle_IRQ+0x50/0xb0)
[    4.335589] [<c000f9ac>] (handle_IRQ) from [<c0008688>] (gic_handle_irq+0x28/0x5c)

Removing the duplicate call to dma_unmap_sg().

Cc: stable@vger.kernel.org
Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
9 years agoLinux 4.2-rc1
Linus Torvalds [Sun, 5 Jul 2015 18:01:52 +0000 (11:01 -0700)]
Linux 4.2-rc1

9 years agoMerge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux...
Linus Torvalds [Sun, 5 Jul 2015 17:54:09 +0000 (10:54 -0700)]
Merge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull late x86 platform driver updates from Darren Hart:
 "The following came in a bit later and I wanted them to bake in next a
  few more days before submitting, thus the second pull.

  A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
  dell-laptop, a couple minor fixes, and some updated documentation in
  the dell-laptop comments.

  intel_pmc_ipc:
   - Add Intel Apollo Lake PMC IPC driver

  tc1100-wmi:
   - Delete an unnecessary check before the function call "kfree"

  dell-laptop:
   - Fix allocating & freeing SMI buffer page
   - Show info about WiGig and UWB in debugfs
   - Update information about wireless control"

* tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
  tc1100-wmi: Delete an unnecessary check before the function call "kfree"
  dell-laptop: Fix allocating & freeing SMI buffer page
  dell-laptop: Show info about WiGig and UWB in debugfs
  dell-laptop: Update information about wireless control

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sun, 5 Jul 2015 02:36:06 +0000 (19:36 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull more vfs updates from Al Viro:
 "Assorted VFS fixes and related cleanups (IMO the most interesting in
  that part are f_path-related things and Eric's descriptor-related
  stuff).  UFS regression fixes (it got broken last cycle).  9P fixes.
  fs-cache series, DAX patches, Jan's file_remove_suid() work"

[ I'd say this is much more than "fixes and related cleanups".  The
  file_table locking rule change by Eric Dumazet is a rather big and
  fundamental update even if the patch isn't huge.   - Linus ]

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
  9p: cope with bogus responses from server in p9_client_{read,write}
  p9_client_write(): avoid double p9_free_req()
  9p: forgetting to cancel request on interrupted zero-copy RPC
  dax: bdev_direct_access() may sleep
  block: Add support for DAX reads/writes to block devices
  dax: Use copy_from_iter_nocache
  dax: Add block size note to documentation
  fs/file.c: __fget() and dup2() atomicity rules
  fs/file.c: don't acquire files->file_lock in fd_install()
  fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
  vfs: avoid creation of inode number 0 in get_next_ino
  namei: make set_root_rcu() return void
  make simple_positive() public
  ufs: use dir_pages instead of ufs_dir_pages()
  pagemap.h: move dir_pages() over there
  remove the pointless include of lglock.h
  fs: cleanup slight list_entry abuse
  xfs: Correctly lock inode when removing suid and file capabilities
  fs: Call security_ops->inode_killpriv on truncate
  fs: Provide function telling whether file_remove_privs() will do anything
  ...

9 years agobluetooth: fix list handling
Linus Torvalds [Sun, 5 Jul 2015 02:11:33 +0000 (19:11 -0700)]
bluetooth: fix list handling

Commit 835a6a2f8603 ("Bluetooth: Stop sabotaging list poisoning")
thought that the code was sabotaging the list poisoning when NULL'ing
out the list pointers and removed it.

But what was going on was that the bluetooth code was using NULL
pointers for the list as a way to mark it empty, and that commit just
broke it (and replaced the test with NULL with a "list_empty()" test on
a uninitialized list instead, breaking things even further).

So fix it all up to use the regular and real list_empty() handling
(which does not use NULL, but a pointer to itself), also making sure to
initialize the list properly (the previous NULL case was initialized
implicitly by the session being allocated with kzalloc())

This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong
An.

[ I would normally expect to get this through the bt tree, but I'm going
  to release -rc1, so I'm just committing this directly   - Linus ]

Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Original-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Original-by: Marcel Holtmann <marcel@holtmann.org>:
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Sat, 4 Jul 2015 21:13:43 +0000 (14:13 -0700)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:
 "It's been a busy development cycle for target-core in a number of
  different areas.

  The fabric API usage for se_node_acl allocation is now within
  target-core code, dropping the external API callers for all fabric
  drivers tree-wide.

  There is a new conversion to RCU hlists for se_node_acl and
  se_portal_group LUN mappings, that turns fast-past LUN lookup into a
  completely lockless code-path.  It also removes the original
  hard-coded limitation of 256 LUNs per fabric endpoint.

  The configfs attributes for backends can now be shared between core
  and driver code, allowing existing drivers to use common code while
  still allowing flexibility for new backend provided attributes.

  The highlights include:

   - Merge sbc_verify_dif_* into common code (sagi)
   - Remove iscsi-target support for obsolete IFMarker/OFMarker
     (Christophe Vu-Brugier)
   - Add bidi support in target/user backend (ilias + vangelis + agover)
   - Move se_node_acl allocation into target-core code (hch)
   - Add crc_t10dif_update common helper (akinobu + mkp)
   - Handle target-core odd SGL mapping for data transfer memory
     (akinobu)
   - Move transport ID handling into target-core (hch)
   - Move task tag into struct se_cmd + support 64-bit tags (bart)
   - Convert se_node_acl->device_list[] to RCU hlist (nab + hch +
     paulmck)
   - Convert se_portal_group->tpg_lun_list[] to RCU hlist (nab + hch +
     paulmck)
   - Simplify target backend driver registration (hch)
   - Consolidate + simplify target backend attribute implementations
     (hch + nab)
   - Subsume se_port + t10_alua_tg_pt_gp_member into se_lun (hch)
   - Drop lun_sep_lock for se_lun->lun_se_dev RCU usage (hch + nab)
   - Drop unnecessary core_tpg_register TFO parameter (nab)
   - Use 64-bit LUNs tree-wide (hannes)
   - Drop left-over TARGET_MAX_LUNS_PER_TRANSPORT limit (hannes)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (76 commits)
  target: Bump core version to v5.0
  target: remove target_core_configfs.h
  target: remove unused TARGET_CORE_CONFIG_ROOT define
  target: consolidate version defines
  target: implement WRITE_SAME with UNMAP bit using ->execute_unmap
  target: simplify UNMAP handling
  target: replace se_cmd->execute_rw with a protocol_data field
  target/user: Fix inconsistent kmap_atomic/kunmap_atomic
  target: Send UA when changing LUN inventory
  target: Send UA upon LUN RESET tmr completion
  target: Send UA on ALUA target port group change
  target: Convert se_lun->lun_deve_lock to normal spinlock
  target: use 'se_dev_entry' when allocating UAs
  target: Remove 'ua_nacl' pointer from se_ua structure
  target_core_alua: Correct UA handling when switching states
  xen-scsiback: Fix compile warning for 64-bit LUN
  target: Remove TARGET_MAX_LUNS_PER_TRANSPORT
  target: use 64-bit LUNs
  target: Drop duplicate + unused se_dev_check_wce
  target: Drop unnecessary core_tpg_register TFO parameter
  ...

9 years agoMerge tag 'ntb-4.2' of git://github.com/jonmason/ntb
Linus Torvalds [Sat, 4 Jul 2015 21:07:47 +0000 (14:07 -0700)]
Merge tag 'ntb-4.2' of git://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "This includes a pretty significant reworking of the NTB core code, but
  has already produced some significant performance improvements.

  An abstraction layer was added to allow the hardware and clients to be
  easily added.  This required rewriting the NTB transport layer for
  this abstraction layer.  This modification will allow future "high
  performance" NTB clients.

  In addition to this change, a number of performance modifications were
  added.  These changes include NUMA enablement, using CPU memcpy
  instead of asyncdma, and modification of NTB layer MTU size"

* tag 'ntb-4.2' of git://github.com/jonmason/ntb: (22 commits)
  NTB: Add split BAR output for debugfs stats
  NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
  NTB: Print driver name and version in module init
  NTB: Increase transport MTU to 64k from 16k
  NTB: Rename Intel code names to platform names
  NTB: Default to CPU memcpy for performance
  NTB: Improve performance with write combining
  NTB: Use NUMA memory in Intel driver
  NTB: Use NUMA memory and DMA chan in transport
  NTB: Rate limit ntb_qp_link_work
  NTB: Add tool test client
  NTB: Add ping pong test client
  NTB: Add parameters for Intel SNB B2B addresses
  NTB: Reset transport QP link stats on down
  NTB: Do not advance transport RX on link down
  NTB: Differentiate transport link down messages
  NTB: Check the device ID to set errata flags
  NTB: Enable link for Intel root port mode in probe
  NTB: Read peer info from local SPAD in transport
  NTB: Split ntb_hw_intel and ntb_transport drivers
  ...

9 years ago9p: cope with bogus responses from server in p9_client_{read,write}
Al Viro [Sat, 4 Jul 2015 20:17:39 +0000 (16:17 -0400)]
9p: cope with bogus responses from server in p9_client_{read,write}

if server claims to have written/read more than we'd told it to,
warn and cap the claimed byte count to avoid advancing more than
we are ready to.

9 years agop9_client_write(): avoid double p9_free_req()
Al Viro [Sat, 4 Jul 2015 20:11:05 +0000 (16:11 -0400)]
p9_client_write(): avoid double p9_free_req()

Braino in "9p: switch p9_client_write() to passing it struct iov_iter *";
if response is impossible to parse and we discard the request, get the
out of the loop right there.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years ago9p: forgetting to cancel request on interrupted zero-copy RPC
Al Viro [Sat, 4 Jul 2015 20:04:19 +0000 (16:04 -0400)]
9p: forgetting to cancel request on interrupted zero-copy RPC

If we'd already sent a request and decide to abort it, we *must*
issue TFLUSH properly and not just blindly reuse the tag, or
we'll get seriously screwed when response eventually arrives
and we confuse it for response to later request that had reused
the same tag.

Cc: stable@vger.kernel.org # v3.2 and later
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agodax: bdev_direct_access() may sleep
Matthew Wilcox [Fri, 3 Jul 2015 14:40:43 +0000 (10:40 -0400)]
dax: bdev_direct_access() may sleep

The brd driver is the only in-tree driver that may sleep currently.
After some discussion on linux-fsdevel, we decided that any driver
may choose to sleep in its ->direct_access method.  To ensure that all
callers of bdev_direct_access() are prepared for this, add a call
to might_sleep().

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoblock: Add support for DAX reads/writes to block devices
Matthew Wilcox [Fri, 3 Jul 2015 14:40:42 +0000 (10:40 -0400)]
block: Add support for DAX reads/writes to block devices

If a block device supports the ->direct_access methods, bypass the normal
DIO path and use DAX to go straight to memcpy() instead of allocating
a DIO and a BIO.

Includes support for the DIO_SKIP_DIO_COUNT flag in DAX, as is done in
do_blockdev_direct_IO().

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agodax: Use copy_from_iter_nocache
Matthew Wilcox [Fri, 3 Jul 2015 14:40:39 +0000 (10:40 -0400)]
dax: Use copy_from_iter_nocache

When userspace does a write, there's no need for the written data to
pollute the CPU cache.  This matches the original XIP code.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agodax: Add block size note to documentation
Matthew Wilcox [Fri, 3 Jul 2015 14:40:38 +0000 (10:40 -0400)]
dax: Add block size note to documentation

For block devices which are small enough, mkfs will default to creating
a filesystem with block sizes smaller than page size.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 4 Jul 2015 18:29:59 +0000 (11:29 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Except for the preempt notifiers fix, these are all small bugfixes
  that could have been waited for -rc2.  Sending them now since I was
  taking care of Peter's patch anyway"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: add hyper-v crash msrs values
  KVM: x86: remove data variable from kvm_get_msr_common
  KVM: s390: virtio-ccw: don't overwrite config space values
  KVM: x86: keep track of LVT0 changes under APICv
  KVM: x86: properly restore LVT0
  KVM: x86: make vapics_in_nmi_mode atomic
  sched, preempt_notifier: separate notifier registration from static_key inc/dec

9 years agoNTB: Add split BAR output for debugfs stats
Dave Jiang [Thu, 18 Jun 2015 09:17:30 +0000 (05:17 -0400)]
NTB: Add split BAR output for debugfs stats

When split BAR is enabled, the driver needs to dump out the split BAR
registers rather than the original 64bit BAR registers.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
Dave Jiang [Mon, 15 Jun 2015 12:22:30 +0000 (08:22 -0400)]
NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe

The unsafe doorbell and scratchpad access should display reason when
WARN is called.  Otherwise we get a stack dump without any explanation.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Print driver name and version in module init
Dave Jiang [Mon, 15 Jun 2015 12:21:33 +0000 (08:21 -0400)]
NTB: Print driver name and version in module init

Printouts driver name and version to indicate what is being loaded.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Increase transport MTU to 64k from 16k
Dave Jiang [Wed, 3 Jun 2015 15:29:38 +0000 (11:29 -0400)]
NTB: Increase transport MTU to 64k from 16k

Benchmarking showed a significant performance increase with the MTU size
to 64k instead of 16k.  Change the driver default to 64k.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Rename Intel code names to platform names
Dave Jiang [Wed, 20 May 2015 16:55:47 +0000 (12:55 -0400)]
NTB: Rename Intel code names to platform names

Instead of using the platform code names, use the correct platform names
to identify the respective Intel NTB hardware.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Default to CPU memcpy for performance
Dave Jiang [Tue, 19 May 2015 20:52:04 +0000 (16:52 -0400)]
NTB: Default to CPU memcpy for performance

Disable DMA usage by default, since the CPU provides much better
performance with write combining.  Provide a module parameter to enable
DMA usage when offloading the memcpy is preferred.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Improve performance with write combining
Dave Jiang [Tue, 19 May 2015 20:45:46 +0000 (16:45 -0400)]
NTB: Improve performance with write combining

Changing the memory window BAR mappings to write combining significantly
boosts the performance.  We will also use memcpy that uses non-temporal
store, which showed performance improvement when doing non-cached
memcpys.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Use NUMA memory in Intel driver
Allen Hubbe [Tue, 19 May 2015 16:04:52 +0000 (12:04 -0400)]
NTB: Use NUMA memory in Intel driver

Allocate memory for the NUMA node of the NTB device.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Use NUMA memory and DMA chan in transport
Allen Hubbe [Mon, 18 May 2015 10:20:47 +0000 (06:20 -0400)]
NTB: Use NUMA memory and DMA chan in transport

Allocate memory and request the DMA channel for the same NUMA node as
the NTB device.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Rate limit ntb_qp_link_work
Allen Hubbe [Mon, 11 May 2015 14:08:26 +0000 (10:08 -0400)]
NTB: Rate limit ntb_qp_link_work

When the ntb transport is connecting and waiting for the peer, the debug
console receives lots of debug level messages about the remote qp link
status being down.  Rate limit those messages.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add tool test client
Allen Hubbe [Thu, 21 May 2015 06:51:39 +0000 (02:51 -0400)]
NTB: Add tool test client

This is a simple debugging driver that enables the doorbell and
scratch pad registers to be read and written from the debugfs.  This
tool enables more complicated debugging to be scripted from user space.
This driver may be used to test that your ntb hardware and drivers are
functioning at a basic level.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add ping pong test client
Allen Hubbe [Wed, 15 Apr 2015 15:12:41 +0000 (11:12 -0400)]
NTB: Add ping pong test client

This is a simple ping pong driver that exercises the scratch pads and
doorbells of the ntb hardware.  This driver may be used to test that
your ntb hardware and drivers are functioning at a basic level.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add parameters for Intel SNB B2B addresses
Allen Hubbe [Mon, 11 May 2015 09:45:30 +0000 (05:45 -0400)]
NTB: Add parameters for Intel SNB B2B addresses

Add module parameters for the addresses to be used in B2B topology.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Reset transport QP link stats on down
Allen Hubbe [Tue, 12 May 2015 12:09:15 +0000 (08:09 -0400)]
NTB: Reset transport QP link stats on down

Reset the link stats when the link goes down.  In particular, the TX and
RX index and count must be reset, or else the TX side will be sending
packets to the RX side where the RX side is not expecting them.  Reset
all the stats, to be consistent.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Do not advance transport RX on link down
Allen Hubbe [Tue, 12 May 2015 10:24:27 +0000 (06:24 -0400)]
NTB: Do not advance transport RX on link down

On link down, don't advance RX index to the next entry.  The next entry
should never be valid after receiving the link down flag.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Differentiate transport link down messages
Allen Hubbe [Tue, 12 May 2015 10:55:44 +0000 (06:55 -0400)]
NTB: Differentiate transport link down messages

The same message "qp %d: Link Down\n" was printed at two locations in
ntb_transport.  Change the messages so they are distinct.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Check the device ID to set errata flags
Dave Jiang [Fri, 8 May 2015 16:24:40 +0000 (12:24 -0400)]
NTB: Check the device ID to set errata flags

Set errata flags for the specific device IDs to which they apply,
instead of the whole Xeon hardware class.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Enable link for Intel root port mode in probe
Dave Jiang [Tue, 19 May 2015 20:59:34 +0000 (16:59 -0400)]
NTB: Enable link for Intel root port mode in probe

Link training should be enabled in the driver probe for root port mode.
We should not have to wait for transport to be loaded for this to
happen.  Otherwise the ntb device will not show up on the transparent
bridge side of the link.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Read peer info from local SPAD in transport
Dave Jiang [Tue, 2 Jun 2015 07:45:07 +0000 (03:45 -0400)]
NTB: Read peer info from local SPAD in transport

The transport was writing and then reading the peer scratch pad,
essentially reading what it just wrote instead of exchanging any
information with the peer.  The transport expects the peer values to be
the same as the local values, so this issue was not obvious.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Split ntb_hw_intel and ntb_transport drivers
Allen Hubbe [Thu, 9 Apr 2015 14:33:20 +0000 (10:33 -0400)]
NTB: Split ntb_hw_intel and ntb_transport drivers

Change ntb_hw_intel to use the new NTB hardware abstraction layer.

Split ntb_transport into its own driver.  Change it to use the new NTB
hardware abstraction layer.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoNTB: Add NTB hardware abstraction layer
Allen Hubbe [Thu, 9 Apr 2015 14:33:20 +0000 (10:33 -0400)]
NTB: Add NTB hardware abstraction layer

Abstract the NTB device behind a programming interface, so that it can
support different hardware and client drivers.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
9 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 16:22:51 +0000 (09:22 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq update from Thomas Gleixner:
 "The last update for 4.2 is just moving a macro from a local header to
  the global one, so it can be used in architecture code as well.

  Cleanup of the now empty local header is 4.3 material"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: Move IRQCHIP_DECLARE macro to include/linux/irqchip.h

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:58:50 +0000 (08:58 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Two FPU rewrite related fixes.  This addresses all known x86
  regressions at this stage.  Also some other misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Fix boot crash in the early FPU code
  x86/asm/entry/64: Update path names
  x86/fpu: Fix FPU related boot regression when CPUID masking BIOS feature is enabled
  x86/boot/setup: Clean up the e820_reserve_setup_data() code
  x86/kaslr: Fix typo in the KASLR_FLAG documentation

9 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:56:53 +0000 (08:56 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Debug info and other statistics fixes and related enhancements"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/numa: Fix numa balancing stats in /proc/pid/sched
  sched/numa: Show numa_group ID in /proc/sched_debug task listings
  sched/debug: Move print_cfs_rq() declaration to kernel/sched/sched.h
  sched/stat: Expose /proc/pid/schedstat if CONFIG_SCHED_INFO=y
  sched/stat: Simplify the sched_info accounting dependency

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:17:29 +0000 (08:17 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar:
 "This tree includes an x86 PMU scheduling fix, but most changes are
  late breaking tooling fixes and updates:

  User visible fixes:

   - Create config.detected into OUTPUT directory, fixing parallel
     builds sharing the same source directory (Aaro Kiskinen)

   - Allow to specify custom linker command, fixing some MIPS64 builds.
     (Aaro Kiskinen)

   - Fix to show proper convergence stats in 'perf bench numa' (Srikar
     Dronamraju)

  User visible changes:

   - Validate syscall list passed via -e argument to 'perf trace'.
     (Arnaldo Carvalho de Melo)

   - Introduce 'perf stat --per-thread' (Jiri Olsa)

   - Check access permission for --kallsyms and --vmlinux (Li Zhang)

   - Move toggling event logic from 'perf top' and into hists browser,
     allowing freeze/unfreeze with event lists with more than one entry
     (Namhyung Kim)

   - Add missing newlines when dumping PERF_RECORD_FINISHED_ROUND and
     showing the Aggregated stats in 'perf report -D' (Adrian Hunter)

  Infrastructure fixes:

   - Add missing break for PERF_RECORD_ITRACE_START, which caused those
     events samples to be parsed as well as PERF_RECORD_LOST_SAMPLES.
     ITRACE_START only appears when Intel PT or BTS are present, so..
     (Jiri Olsa)

   - Call the perf_session destructor when bailing out in the inject,
     kmem, report, kvm and mem tools (Taeung Song)

  Infrastructure changes:

   - Move stuff out of 'perf stat' and into the lib for further use
     (Jiri Olsa)

   - Reference count the cpu_map and thread_map classes (Jiri Olsa)

   - Set evsel->{cpus,threads} from the evlist, if not set, allowing the
     generalization of some 'perf stat' functions that previously were
     accessing private static evlist variable (Jiri Olsa)

   - Delete an unnecessary check before the calling free_event_desc()
     (Markus Elfring)

   - Allow auxtrace data alignment (Adrian Hunter)

   - Allow events with dot (Andi Kleen)

   - Fix failure to 'perf probe' events on arm (He Kuang)

   - Add testing for Makefile.perf (Jiri Olsa)

   - Add test for make install with prefix (Jiri Olsa)

   - Fix single target build dependency check (Jiri Olsa)

   - Access thread_map entries via accessors, prep patch to hold more
     info per entry, for ongoing 'perf stat --per-thread' work (Jiri
     Olsa)

   - Use __weak definition from compiler.h (Sukadev Bhattiprolu)

   - Split perf_pmu__new_alias() (Sukadev Bhattiprolu)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  perf tools: Allow to specify custom linker command
  perf tools: Create config.detected into OUTPUT directory
  perf mem: Fill in the missing session freeing after an error occurs
  perf kvm: Fill in the missing session freeing after an error occurs
  perf report: Fill in the missing session freeing after an error occurs
  perf kmem: Fill in the missing session freeing after an error occurs
  perf inject: Fill in the missing session freeing after an error occurs
  perf tools: Add missing break for PERF_RECORD_ITRACE_START
  perf/x86: Fix 'active_events' imbalance
  perf symbols: Check access permission when reading symbol files
  perf stat: Introduce --per-thread option
  perf stat: Introduce print_counters function
  perf stat: Using init_stats instead of memset
  perf stat: Rename print_interval to process_interval
  perf stat: Remove perf_evsel__read_cb function
  perf stat: Move perf_stat initialization counter process code
  perf stat: Move zero_per_pkg into counter process code
  perf stat: Separate counters reading and processing
  perf stat: Introduce read_counters function
  perf stat: Introduce perf_evsel__read function
  ...

9 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Jul 2015 15:16:41 +0000 (08:16 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull max log buf size increase from Ingo Molnar:
 "Ran into this limit recently, so increase it by an order of magnitude"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  printk: Increase maximum CONFIG_LOG_BUF_SHIFT from 21 to 25

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sat, 4 Jul 2015 15:14:22 +0000 (08:14 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull second round of input updates from Dmitry Torokhov:
 "A new driver for Weida wdt87xx touch controllers, and a bunch of
  fixups for other drivers"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wdt87xx_i2c - add a scaling factor for TOUCH_MAJOR event
  Input: wdt87xx_i2c - remove stray newline in diagnostic message
  Input: arc_ps2 - add HAS_IOMEM dependency
  Input: wdt87xx_i2c - fix format warning
  Input: improve parsing OF parameters for touchscreens
  Input: edt-ft5x06 - mark as direct input device
  Input: use for_each_set_bit() where appropriate
  Input: add a driver for wdt87xx touchscreen controller
  Input: axp20x-pek - fix reporting button state as inverted
  Input: xpad - re-send LED command on present event
  Input: xpad - set the LEDs properly on XBox Wireless controllers
  Input: imx_keypad - check for clk_prepare_enable() error

9 years agox86/fpu: Fix boot crash in the early FPU code
Ingo Molnar [Sat, 4 Jul 2015 07:58:19 +0000 (09:58 +0200)]
x86/fpu: Fix boot crash in the early FPU code

Jan Kara and Thomas Gleixner reported boot crashes in the FPU
code:

  general protection fault: 0000 [#1] SMP
  RIP: 0010:[<ffffffff81048a6c>]  [<ffffffff81048a6c>] mxcsr_feature_mask_init+0x1c/0x40

  2b:*  0f ae 85 00 fe ff ff    fxsave -0x200(%rbp)

and bisected it down to the following FPU commit:

   91a8c2a5b43f ("x86/fpu: Clean up and fix MXCSR handling")

The reason is that the on-stack FPU registers state variable,
used by the FXSAVE instruction, did not have the required
minimum alignment of 16 bytes, causing the general protection
fault.

This is most likely a GCC bug in older GCC versions, but the
offending commit also added a bogus extra 32-byte alignment
(which GCC ignored too).

So fix this bug by making the variable static again, but also
mark it __initdata this time, because fpu__init_system_mxcsr()
is now an __init function.

Reported-and-bisected-by: Jan Kara <jack@suse.cz>
Reported-bisected-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150704075819.GA9201@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/numa: Fix numa balancing stats in /proc/pid/sched
Srikar Dronamraju [Thu, 25 Jun 2015 17:21:43 +0000 (22:51 +0530)]
sched/numa: Fix numa balancing stats in /proc/pid/sched

Commit 44dba3d5d6a1 ("sched: Refactor task_struct to use
numa_faults instead of numa_* pointers") modified the way
tsk->numa_faults stats are accounted.

However that commit never touched show_numa_stats() that is displayed
in /proc/pid/sched and thus the numbers displayed in /proc/pid/sched
don't match the actual numbers.

Fix it by making sure that /proc/pid/sched reflects the task
fault numbers. Also add group fault stats too.

Also couple of more modifications are added here:

1. Format changes:

  - Previously we would list two entries per node, one for private
    and one for shared. Also the home node info was listed in each entry.

  - Now preferred node, total_faults and current node are
    displayed separately.

  - Now there is one entry per node, that lists private,shared task and
    group faults.

2. Unit changes:

  - p->numa_pages_migrated was getting reset after every read of
    /proc/pid/sched. It's more useful to have absolute numbers since
    differential migrations between two accesses can be more easily
    calculated.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Iulia Manda <iulia.manda21@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435252903-1081-4-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/numa: Show numa_group ID in /proc/sched_debug task listings
Srikar Dronamraju [Thu, 25 Jun 2015 17:21:42 +0000 (22:51 +0530)]
sched/numa: Show numa_group ID in /proc/sched_debug task listings

Having the numa group ID in /proc/sched_debug helps to see how
the numa groups have spread across the system.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Iulia Manda <iulia.manda21@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435252903-1081-3-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/debug: Move print_cfs_rq() declaration to kernel/sched/sched.h
Srikar Dronamraju [Thu, 25 Jun 2015 17:21:41 +0000 (22:51 +0530)]
sched/debug: Move print_cfs_rq() declaration to kernel/sched/sched.h

Currently print_cfs_rq() is declared in include/linux/sched.h.
However it's not used outside kernel/sched. Hence move the
declaration to kernel/sched/sched.h

Also some functions are only available for CONFIG_SCHED_DEBUG=y.
Hence move the declarations to within the #ifdef.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Iulia Manda <iulia.manda21@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435252903-1081-2-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/stat: Expose /proc/pid/schedstat if CONFIG_SCHED_INFO=y
Naveen N. Rao [Tue, 30 Jun 2015 09:06:03 +0000 (14:36 +0530)]
sched/stat: Expose /proc/pid/schedstat if CONFIG_SCHED_INFO=y

Expand /proc/pid/schedstat output:

 - enable it on CONFIG_TASK_DELAY_ACCT=y && !CONFIG_SCHEDSTATS kernels.

 - dump all zeroes on kernels that are booted with the 'nodelayacct'
   option, which boot option disables delay accounting on
   CONFIG_TASK_DELAY_ACCT=y kernels.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Cc: ricklind@us.ibm.com
Link: http://lkml.kernel.org/r/5ccbef17d4bc841084ea6e6421d4e4a23b7b806f.1435654789.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agosched/stat: Simplify the sched_info accounting dependency
Naveen N. Rao [Thu, 25 Jun 2015 18:23:37 +0000 (23:53 +0530)]
sched/stat: Simplify the sched_info accounting dependency

Both CONFIG_SCHEDSTATS=y and CONFIG_TASK_DELAY_ACCT=y track task
sched_info, which results in ugly #if clauses.

Simplify the code by introducing a synthethic CONFIG_SCHED_INFO
switch, selected by both.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Cc: ricklind@us.ibm.com
Link: http://lkml.kernel.org/r/8d19eef800811a94b0f91bcbeb27430a884d7433.1435255405.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoMerge branch 'next' into for-linus
Dmitry Torokhov [Sat, 4 Jul 2015 06:56:31 +0000 (23:56 -0700)]
Merge branch 'next' into for-linus

Prepare second round of input updates for 4.2 merge window.

9 years agoMerge tag 'topic/drm-fixes-2015-07-04' of git://anongit.freedesktop.org/drm-intel
Linus Torvalds [Fri, 3 Jul 2015 23:09:29 +0000 (16:09 -0700)]
Merge tag 'topic/drm-fixes-2015-07-04' of git://anongit.freedesktop.org/drm-intel

Pull drm EDID fix from Daniel Vetter:
 "Since Dave is enjoying vacation I figured I'll send you this drm core
  fix directly"

* tag 'topic/drm-fixes-2015-07-04' of git://anongit.freedesktop.org/drm-intel:
  drm/crtc: Fix edid length computation

9 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 3 Jul 2015 23:02:25 +0000 (16:02 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio/vhost cross endian support from Michael Tsirkin:
 "I have just queued some more bugfix patches today but none fix
  regressions and none are related to these ones, so it looks like a
  good time for a merge for -rc1.

  The motivation for this is support for legacy BE guests on the new LE
  hosts.  There are two redeeming properties that made me merge this:

   - It's a trivial amount of code: since we wrap host/guest accesses
     anyway, almost all of it is well hidden from drivers.

   - Sane platforms would never set flags like VHOST_CROSS_ENDIAN_LEGACY,
     and when it's clear, there's zero overhead (as some point it was
     tested by compiling with and without the patches, got the same
     stripped binary).

  Maybe we could create a Kconfig symbol to enforce the second point:
  prevent people from enabling it eg on x86.  I will look into this"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio-pci: alloc only resources actually used.
  macvtap/tun: cross-endian support for little-endian hosts
  vhost: cross-endian support for legacy devices
  virtio: add explicit big-endian support to memory accessors
  vhost: introduce vhost_is_little_endian() helper
  vringh: introduce vringh_is_little_endian() helper
  macvtap: introduce macvtap_is_little_endian() helper
  tun: add tun_is_little_endian() helper
  virtio: introduce virtio_is_little_endian() helper

9 years agodrm/crtc: Fix edid length computation
Shixin Zeng [Fri, 3 Jul 2015 06:46:50 +0000 (08:46 +0200)]
drm/crtc: Fix edid length computation

The length of each EDID block is EDID_LENGTH, and number of blocks is
(1 + edid->extensions) - we need to multiply not add them.

This causes wrong EDID to be passed on, and is a regression introduced
by d2ed34362a52 (drm: Introduce helper for replacing blob properties)

Signed-off-by: Shixin Zeng <zeng.shixin@gmail.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
[danvet: Add Cc: and fix commit summary.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>