Jussi Kivilinna [Fri, 17 Feb 2012 20:48:58 +0000 (22:48 +0200)]
crypto: blowfish-x86_64 - set alignmask to zero
x86 has fast unaligned accesses, so blowfish-x86_64 does not need to enforce
alignment.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jussi Kivilinna [Fri, 17 Feb 2012 20:48:53 +0000 (22:48 +0200)]
crypto: serpent-sse2 - combine ablk_*_init functions
Driver name in ablk_*_init functions can be constructed runtime. Therefore
use single function ablk_init to reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jussi Kivilinna [Fri, 17 Feb 2012 20:48:48 +0000 (22:48 +0200)]
crypto: blowfish-x86_64 - use crypto_[un]register_algs
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. Simplifies init/exit code and reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jussi Kivilinna [Fri, 17 Feb 2012 20:48:43 +0000 (22:48 +0200)]
crypto: twofish-x86_64-3way - use crypto_[un]register_algs
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. Simplifies init/exit code and reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jussi Kivilinna [Fri, 17 Feb 2012 20:48:37 +0000 (22:48 +0200)]
crypto: serpent-sse2 - use crypto_[un]register_algs
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. Simplifies init/exit code and reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 16 Feb 2012 04:18:21 +0000 (12:18 +0800)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
Merge crypto tree as it has cherry-picked the ror64 patch from cryptodev.
Alexey Dobriyan [Sat, 14 Jan 2012 18:44:49 +0000 (21:44 +0300)]
crypto: sha512 - use standard ror64()
Use standard ror64() instead of hand-written.
There is no standard ror64, so create it.
The difference is shift value being "unsigned int" instead of uint64_t
(for which there is no reason). gcc starts to emit native ROR instructions
which it doesn't do for some reason currently. This should make the code
faster.
Patch survives in-tree crypto test and ping flood with hmac(sha512) on.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jesper Juhl [Thu, 9 Feb 2012 22:16:04 +0000 (23:16 +0100)]
crypto: serpent-sse2 - remove dead code from serpent_sse2_glue.c::serpent_sse2_init()
We cannot reach the line after 'return err'. Remove it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jesper Juhl [Thu, 9 Feb 2012 22:02:16 +0000 (23:02 +0100)]
crypto: twofish-x86 - Remove dead code from twofish_glue_3way.c::init()
We can never reach the line just after the 'return 0'
statement. Remove it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jesper Juhl [Sun, 29 Jan 2012 22:39:22 +0000 (23:39 +0100)]
crypto: In crypto_add_alg(), 'exact' wants to be initialized to 0
We declare 'exact' without initializing it and then do:
[...]
if (strlen(p->cru_driver_name))
exact = 1;
if (priority && !exact)
return -EINVAL;
[...]
If the first 'if' is not true, then the second will test an
uninitialized 'exact'.
As far as I can tell, what we want is for 'exact' to be initialized to
0 (zero/false).
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Sun, 5 Feb 2012 04:09:28 +0000 (15:09 +1100)]
crypto: sha512 - Avoid stack bloat on i386
Unfortunately in reducing W from 80 to 16 we ended up unrolling
the loop twice. As gcc has issues dealing with 64-bit ops on
i386 this means that we end up using even more stack space (>1K).
This patch solves the W reduction by moving LOAD_OP/BLEND_OP
into the loop itself, thus avoiding the need to duplicate it.
While the stack space still isn't great (>0.5K) it is at least
in the same ball park as the amount of stack used for our C sha1
implementation.
Note that this patch basically reverts to the original code so
the diff looks bigger than it really is.
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 26 Jan 2012 04:03:16 +0000 (15:03 +1100)]
crypto: sha512 - Use binary and instead of modulus
The previous patch used the modulus operator over a power of 2
unnecessarily which may produce suboptimal binary code. This
patch changes changes them to binary ands instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Kim Phillips [Thu, 19 Jan 2012 00:34:34 +0000 (18:34 -0600)]
crypto: caam - fix gcc 4.6 warning
drivers/crypto/caam/ctrl.c: In function 'caam_probe':
drivers/crypto/caam/ctrl.c:49:6: warning: unused variable 'd' [-Wunused-variable]
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Mark Brown [Tue, 17 Jan 2012 23:34:26 +0000 (23:34 +0000)]
crypto: Add bulk algorithm registration interface
Hardware crypto engines frequently need to register a selection of
different algorithms with the core. Simplify their code slightly,
especially the error handling, by providing functions to register a
number of algorithms in a single call.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Alexey Dobriyan [Sat, 14 Jan 2012 18:44:49 +0000 (21:44 +0300)]
crypto: sha512 - use standard ror64()
Use standard ror64() instead of hand-written.
There is no standard ror64, so create it.
The difference is shift value being "unsigned int" instead of uint64_t
(for which there is no reason). gcc starts to emit native ROR instructions
which it doesn't do for some reason currently. This should make the code
faster.
Patch survives in-tree crypto test and ping flood with hmac(sha512) on.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Alexey Dobriyan [Sat, 14 Jan 2012 18:40:57 +0000 (21:40 +0300)]
crypto: sha512 - reduce stack usage to safe number
For rounds 16--79, W[i] only depends on W[i - 2], W[i - 7], W[i - 15] and W[i - 16].
Consequently, keeping all W[80] array on stack is unnecessary,
only 16 values are really needed.
Using W[16] instead of W[80] greatly reduces stack usage
(~750 bytes to ~340 bytes on x86_64).
Line by line explanation:
* BLEND_OP
array is "circular" now, all indexes have to be modulo 16.
Round number is positive, so remainder operation should be
without surprises.
* initial full message scheduling is trimmed to first 16 values which
come from data block, the rest is calculated before it's needed.
* original loop body is unrolled version of new SHA512_0_15 and
SHA512_16_79 macros, unrolling was done to not do explicit variable
renaming. Otherwise it's the very same code after preprocessing.
See sha1_transform() code which does the same trick.
Patch survives in-tree crypto test and original bugreport test
(ping flood with hmac(sha512).
See FIPS 180-2 for SHA-512 definition
http://csrc.nist.gov/publications/fips/fips180-2/fips180-2withchangenotice.pdf
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Alexey Dobriyan [Sat, 14 Jan 2012 18:27:37 +0000 (21:27 +0300)]
crypto: sha512 - make it work, undo percpu message schedule
commit
f9e2bca6c22d75a289a349f869701214d63b5060
aka "crypto: sha512 - Move message schedule W[80] to static percpu area"
created global message schedule area.
If sha512_update will ever be entered twice, hash will be silently
calculated incorrectly.
Probably the easiest way to notice incorrect hashes being calculated is
to run 2 ping floods over AH with hmac(sha512):
#!/usr/sbin/setkey -f
flush;
spdflush;
add IP1 IP2 ah 25 -A hmac-sha512 0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000025;
add IP2 IP1 ah 52 -A hmac-sha512 0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000052;
spdadd IP1 IP2 any -P out ipsec ah/transport//require;
spdadd IP2 IP1 any -P in ipsec ah/transport//require;
XfrmInStateProtoError will start ticking with -EBADMSG being returned
from ah_input(). This never happens with, say, hmac(sha1).
With patch applied (on BOTH sides), XfrmInStateProtoError does not tick
with multiple bidirectional ping flood streams like it doesn't tick
with SHA-1.
After this patch sha512_transform() will start using ~750 bytes of stack on x86_64.
This is OK for simple loads, for something more heavy, stack reduction will be done
separatedly.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Kim Phillips [Tue, 10 Jan 2012 00:26:49 +0000 (18:26 -0600)]
crypto: caam - be less noisy on startup
sha224 and 384 support extends caam noise to 21 lines. Do the same
as commit
5b859b6 "crypto: talitos - be less noisy on startup", but
for caam, and display:
caam
ffe300000.crypto: fsl,sec-v4.0 algorithms registered in /proc/crypto
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hemant Agrawal [Tue, 10 Jan 2012 00:26:44 +0000 (18:26 -0600)]
crypto: caam - add sha224 and sha384 variants to existing AEAD algorithms
Signed-off-by: Hemant Agrawal <hemant@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Julia Lawall [Mon, 9 Jan 2012 09:40:49 +0000 (10:40 +0100)]
crypto: ixp4xx - convert GFP_KERNEL to GFP_ATOMIC
The function is called with locks held and thus should not use GFP_KERNEL.
The semantic patch that makes this report is available
in scripts/coccinelle/locks/call_kern.cocci.
More information about semantic patching is available at
http://coccinelle.lip6.fr/
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Nikos Mavrogiannopoulos [Tue, 1 Nov 2011 12:39:56 +0000 (13:39 +0100)]
crypto: Add CRYPTO_ALG_KERN_DRIVER_ONLY flag
The added CRYPTO_ALG_KERN_DRIVER_ONLY indicates whether a cipher
is only available via a kernel driver. If the cipher implementation
might be available by using an instruction set or by porting the
kernel code, then it must not be set.
Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Julia Lawall [Tue, 27 Dec 2011 14:01:30 +0000 (15:01 +0100)]
hwrng: tx4939 - use devm_request_and_ioremap
Reimplement a call to devm_request_mem_region followed by a call to ioremap
or ioremap_nocache by a call to devm_request_and_ioremap.
The semantic patch that makes this transformation is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@nm@
expression myname;
identifier i;
@@
struct platform_driver i = { .driver = { .name = myname } };
@@
expression dev,res,size;
expression nm.myname;
@@
-if (!devm_request_mem_region(dev, res->start, size,
- \(res->name\|dev_name(dev)\|myname\))) {
- ...
- return ...;
-}
... when != res->start
(
-devm_ioremap(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
|
-devm_ioremap_nocache(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
)
... when any
when != res->start
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jussi Kivilinna [Tue, 20 Dec 2011 10:58:06 +0000 (12:58 +0200)]
crypto: serpent-sse2 - change transpose_4x4 to only use integer instructions
Matrix transpose macro in serpent-sse2 uses mix of SSE2 integer and SSE floating
point instructions, which might cause performance penality on some CPUs.
This patch replaces transpose_4x4 macro with version that uses only SSE2
integer instructions.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jussi Kivilinna [Tue, 20 Dec 2011 10:20:21 +0000 (12:20 +0200)]
crypto: blowfish-x86_64 - blacklist Pentium 4
Implementation in blowfish-x86_64 uses 64bit rotations which are slow on P4,
making blowfish-x86_64 slower than generic C implementation. Therefore
blacklist P4.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jussi Kivilinna [Tue, 20 Dec 2011 10:20:16 +0000 (12:20 +0200)]
crypto: twofish-x86_64-3way - blacklist pentium4 and atom
Performance of twofish-x86_64-3way on Intel Pentium 4 and Atom is lower than
of twofish-x86_64 module. So blacklist these CPUs.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Varun Wadekar [Fri, 13 Jan 2012 05:38:37 +0000 (16:38 +1100)]
crypto: driver for Tegra AES hardware
driver supports ecb/cbc/ofb/ansi_x9.31rng modes,
128, 192 and 256-bit key sizes
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Henning Heinold [Fri, 13 Jan 2012 05:38:37 +0000 (16:38 +1100)]
arm: tegra: export tegra_chip_uid
The crypto driver will need this api to use
it in the RNG calculations. In order to build
the crypto driver as a module, tegra_chip_uid
has to be exported.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Henning Heinold <heinold@inf.fu-berlin.de>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linus Torvalds [Wed, 11 Jan 2012 06:01:27 +0000 (22:01 -0800)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (54 commits)
crypto: gf128mul - remove leftover "(EXPERIMENTAL)" in Kconfig
crypto: serpent-sse2 - remove unneeded LRW/XTS #ifdefs
crypto: serpent-sse2 - select LRW and XTS
crypto: twofish-x86_64-3way - remove unneeded LRW/XTS #ifdefs
crypto: twofish-x86_64-3way - select LRW and XTS
crypto: xts - remove dependency on EXPERIMENTAL
crypto: lrw - remove dependency on EXPERIMENTAL
crypto: picoxcell - fix boolean and / or confusion
crypto: caam - remove DECO access initialization code
crypto: caam - fix polarity of "propagate error" logic
crypto: caam - more desc.h cleanups
crypto: caam - desc.h - convert spaces to tabs
crypto: talitos - convert talitos_error to struct device
crypto: talitos - remove NO_IRQ references
crypto: talitos - fix bad kfree
crypto: convert drivers/crypto/* to use module_platform_driver()
char: hw_random: convert drivers/char/hw_random/* to use module_platform_driver()
crypto: serpent-sse2 - should select CRYPTO_CRYPTD
crypto: serpent - rename serpent.c to serpent_generic.c
crypto: serpent - cleanup checkpatch errors and warnings
...
Linus Torvalds [Wed, 11 Jan 2012 05:51:23 +0000 (21:51 -0800)]
Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security
* 'for-linus' of git://selinuxproject.org/~jmorris/linux-security: (32 commits)
ima: fix invalid memory reference
ima: free duplicate measurement memory
security: update security_file_mmap() docs
selinux: Casting (void *) value returned by kmalloc is useless
apparmor: fix module parameter handling
Security: tomoyo: add .gitignore file
tomoyo: add missing rcu_dereference()
apparmor: add missing rcu_dereference()
evm: prevent racing during tfm allocation
evm: key must be set once during initialization
mpi/mpi-mpow: NULL dereference on allocation failure
digsig: build dependency fix
KEYS: Give key types their own lockdep class for key->sem
TPM: fix transmit_cmd error logic
TPM: NSC and TIS drivers X86 dependency fix
TPM: Export wait_for_stat for other vendor specific drivers
TPM: Use vendor specific function for status probe
tpm_tis: add delay after aborting command
tpm_tis: Check return code from getting timeouts/durations
tpm: Introduce function to poll for result of self test
...
Fix up trivial conflict in lib/Makefile due to addition of CONFIG_MPI
and SIGSIG next to CONFIG_DQL addition.
Linus Torvalds [Wed, 11 Jan 2012 05:46:36 +0000 (21:46 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
autofs4: deal with autofs4_write/autofs4_write races
autofs4: catatonic_mode vs. notify_daemon race
autofs4: autofs4_wait() vs. autofs4_catatonic_mode() race
hfsplus: creation of hidden dir on mount can fail
block_dev: Suppress bdev_cache_init() kmemleak warninig
fix shrink_dcache_parent() livelock
coda: switch coda_cnode_make() to sane API as well, clean coda_lookup()
coda: deal correctly with allocation failure from coda_cnode_makectl()
securityfs: fix object creation races
Al Viro [Wed, 11 Jan 2012 03:35:38 +0000 (22:35 -0500)]
autofs4: deal with autofs4_write/autofs4_write races
Just serialize the actual writing of packets into pipe on
a new mutex, independent from everything else in the locking
hierarchy. As soon as something has started feeding a piece
of packet into the pipe to daemon, we *want* everything else
about to try the same to wait until we are done.
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 11 Jan 2012 03:24:48 +0000 (22:24 -0500)]
autofs4: catatonic_mode vs. notify_daemon race
we need to hold ->wq_mutex while we are forming the packet to send,
lest we have autofs4_catatonic_mode() setting wq->name.name to NULL
just as autofs4_notify_daemon() decides to memcpy() from it...
We do have check for catatonic mode immediately after that (under
->wq_mutex, as it ought to be) and packet won't be actually sent,
but it'll be too late for us if we oops on that memcpy() from NULL...
Fix is obvious - just extend the area covered by ->wq_mutex over
that switch and check whether it's catatonic *before* doing anything
else.
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 11 Jan 2012 03:20:12 +0000 (22:20 -0500)]
autofs4: autofs4_wait() vs. autofs4_catatonic_mode() race
We need to recheck ->catatonic after autofs4_wait() got ->wq_mutex
for good, or we might end up with wq inserted into queue after
autofs4_catatonic_mode() had done its thing. It will stick there
forever, since there won't be anything to clear its ->name.name.
A bit of a complication: validate_request() drops and regains ->wq_mutex.
It actually ends up the most convenient place to stick the check into...
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Wed, 11 Jan 2012 02:04:27 +0000 (18:04 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/mst/vhost
lib: use generic pci_iomap on all architectures
Many architectures don't want to pull in iomap.c,
so they ended up duplicating pci_iomap from that file.
That function isn't trivial, and we are going to modify it
https://lkml.org/lkml/2011/11/14/183
so the duplication hurts.
This reduces the scope of the problem significantly,
by moving pci_iomap to a separate file and
referencing that from all architectures.
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
alpha: drop pci_iomap/pci_iounmap from pci-noop.c
mn10300: switch to GENERIC_PCI_IOMAP
mn10300: add missing __iomap markers
frv: switch to GENERIC_PCI_IOMAP
tile: switch to GENERIC_PCI_IOMAP
tile: don't panic on iomap
sparc: switch to GENERIC_PCI_IOMAP
sh: switch to GENERIC_PCI_IOMAP
powerpc: switch to GENERIC_PCI_IOMAP
parisc: switch to GENERIC_PCI_IOMAP
mips: switch to GENERIC_PCI_IOMAP
microblaze: switch to GENERIC_PCI_IOMAP
arm: switch to GENERIC_PCI_IOMAP
alpha: switch to GENERIC_PCI_IOMAP
lib: add GENERIC_PCI_IOMAP
lib: move GENERIC_IOMAP to lib/Kconfig
Fix up trivial conflicts due to changes nearby in arch/{m68k,score}/Kconfig
Linus Torvalds [Wed, 11 Jan 2012 01:39:40 +0000 (17:39 -0800)]
Merge tag 'for-linux-3.3-merge-window' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming
* tag 'for-linux-3.3-merge-window' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming: (29 commits)
C6X: replace tick_nohz_stop/restart_sched_tick calls
C6X: add register_cpu call
C6X: deal with memblock API changes
C6X: fix timer64 initialization
C6X: fix layout of EMIFA registers
C6X: MAINTAINERS
C6X: DSCR - Device State Configuration Registers
C6X: EMIF - External Memory Interface
C6X: general SoC support
C6X: library code
C6X: headers
C6X: ptrace support
C6X: loadable module support
C6X: cache control
C6X: clocks
C6X: build infrastructure
C6X: syscalls
C6X: interrupt handling
C6X: time management
C6X: signal management
...
Linus Torvalds [Wed, 11 Jan 2012 01:37:49 +0000 (17:37 -0800)]
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Wire-up new system calls
microblaze: Remove NO_IRQ from architecture
input: xilinx_ps2: Don't use NO_IRQ
block: xsysace: Don't use NO_IRQ
microblaze: Trivial asm fix
microblaze: Fix debug message in module
microblaze: Remove eprintk macro
microblaze: Send CR before LF for early console
microblaze: Change NO_IRQ to 0
microblaze: Use irq_of_parse_and_map for timer
microblaze: intc: Change variable name
microblaze: Use of_find_compatible_node for timer and intc
microblaze: Add __cmpdi2
microblaze: Synchronize __pa __va macros
Linus Torvalds [Wed, 11 Jan 2012 01:37:20 +0000 (17:37 -0800)]
Merge branch 'unicore32' of git://github.com/gxt/linux
* 'unicore32' of git://github.com/gxt/linux:
rtc-puv3: solve section mismatch in rtc-puv3.c
rtc-puv3: using module_platform_driver()
i2c-puv3: using module_platform_driver()
rtc-puv3: irq: remove IRQF_DISABLED
unicore32: Remove IRQF_DISABLED
unicore32: Use set_current_blocked()
unicore32: add ioremap_nocache definition
unicore32: delete specified xlate_dev_mem_ptr
of: add include asm/setup.h in drivers/of/fdt.c
unicore32: standardize /proc/iomem "Kernel code" name
Linus Torvalds [Wed, 11 Jan 2012 01:36:43 +0000 (17:36 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/lliubbo/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin:
blackfin: bf561: add adv7183 capture support
blackfin: bf537: add capture support
blackfin: bf548: add capture support
blackfin: time-ts: rm unused func broadcast_timer_setup()
blackfin: i2c-lcd: change default clock rate
blackfin: mac: dsa: add vlan mask in board file
blackfin: bf537: change num_chipselect for spi-sport
blackfin: serial: bfin-uart: remove unused field
bf54x: get mem size: missing break in switch
blackfin: smp: fix msg queue overflow issue
blackfin: config: update macro SPI_BFIN in board file
blackfin: config: update def config for all boards
blackfin: smp: cleanup smp code
blackfin: smp: add suspend and wakeup irq flags
blackfin: bf533-stamp: add missed patches for new asoc driver
blackfin: bf533-stamp: fix ad1836 name
Linus Torvalds [Wed, 11 Jan 2012 00:59:59 +0000 (16:59 -0800)]
Merge branch 'writeback-for-linus' of git://git./linux/kernel/git/wfg/linux
* 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
writeback: move MIN_WRITEBACK_PAGES to fs-writeback.c
writeback: balanced_rate cannot exceed write bandwidth
writeback: do strict bdi dirty_exceeded
writeback: avoid tiny dirty poll intervals
writeback: max, min and target dirty pause time
writeback: dirty ratelimit - think time compensation
btrfs: fix dirtied pages accounting on sub-page writes
writeback: fix dirtied pages accounting on redirty
writeback: fix dirtied pages accounting on sub-page writes
writeback: charge leaked page dirties to active tasks
writeback: Include all dirty inodes in background writeback
Linus Torvalds [Wed, 11 Jan 2012 00:42:48 +0000 (16:42 -0800)]
Merge branch 'akpm' (aka "Andrew's patch-bomb")
Andrew elucidates:
- First installmeant of MM. We have a HUGE number of MM patches this
time. It's crazy.
- MAINTAINERS updates
- backlight updates
- leds
- checkpatch updates
- misc ELF stuff
- rtc updates
- reiserfs
- procfs
- some misc other bits
* akpm: (124 commits)
user namespace: make signal.c respect user namespaces
workqueue: make alloc_workqueue() take printf fmt and args for name
procfs: add hidepid= and gid= mount options
procfs: parse mount options
procfs: introduce the /proc/<pid>/map_files/ directory
procfs: make proc_get_link to use dentry instead of inode
signal: add block_sigmask() for adding sigmask to current->blocked
sparc: make SA_NOMASK a synonym of SA_NODEFER
reiserfs: don't lock root inode searching
reiserfs: don't lock journal_init()
reiserfs: delay reiserfs lock until journal initialization
reiserfs: delete comments referring to the BKL
drivers/rtc/interface.c: fix alarm rollover when day or month is out-of-range
drivers/rtc/rtc-twl.c: add DT support for RTC inside twl4030/twl6030
drivers/rtc/: remove redundant spi driver bus initialization
drivers/rtc/rtc-jz4740.c: make jz4740_rtc_driver static
drivers/rtc/rtc-mc13xxx.c: make mc13xxx_rtc_idtable static
rtc: convert drivers/rtc/* to use module_platform_driver()
drivers/rtc/rtc-wm831x.c: convert to devm_kzalloc()
drivers/rtc/rtc-wm831x.c: remove unused period IRQ handler
...
Serge E. Hallyn [Tue, 10 Jan 2012 23:11:37 +0000 (15:11 -0800)]
user namespace: make signal.c respect user namespaces
ipc/mqueue.c: for __SI_MESQ, convert the uid being sent to recipient's
user namespace. (new, thanks Oleg)
__send_signal: convert current's uid to the recipient's user namespace
for any siginfo which is not SI_FROMKERNEL (patch from Oleg, thanks
again :)
do_notify_parent and do_notify_parent_cldstop: map task's uid to parent's
user namespace
ptrace_signal maps parent's uid into current's user namespace before
including in signal to current. IIUC Oleg has argued that this shouldn't
matter as the debugger will play with it, but it seems like not converting
the value currently being set is misleading.
Changelog:
Sep 20: Inspired by Oleg's suggestion, define map_cred_ns() helper to
simplify callers and help make clear what we are translating
(which uid into which namespace). Passing the target task would
make callers even easier to read, but we pass in user_ns because
current_user_ns() != task_cred_xxx(current, user_ns).
Sep 20: As recommended by Oleg, also put task_pid_vnr() under rcu_read_lock
in ptrace_signal().
Sep 23: In send_signal(), detect when (user) signal is coming from an
ancestor or unrelated user namespace. Pass that on to __send_signal,
which sets si_uid to 0 or overflowuid if needed.
Oct 12: Base on Oleg's fixup_uid() patch. On top of that, handle all
SI_FROMKERNEL cases at callers, because we can't assume sender is
current in those cases.
Nov 10: (mhelsley) rename fixup_uid to more meaningful usern_fixup_signal_uid
Nov 10: (akpm) make the !CONFIG_USER_NS case clearer
Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
From: Serge Hallyn <serge.hallyn@canonical.com>
Subject: __send_signal: pass q->info, not info, to userns_fixup_signal_uid (v2)
Eric Biederman pointed out that passing info is a bug and could lead to a
NULL pointer deref to boot.
A collection of signal, securebits, filecaps, cap_bounds, and a few other
ltp tests passed with this kernel.
Changelog:
Nov 18: previous patch missed a leading '&'
Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
From: Dan Carpenter <dan.carpenter@oracle.com>
Subject: ipc/mqueue: lock() => unlock() typo
There was a double lock typo introduced in
b085f4bd6b21 "user namespace:
make signal.c respect user namespaces"
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tejun Heo [Tue, 10 Jan 2012 23:11:35 +0000 (15:11 -0800)]
workqueue: make alloc_workqueue() take printf fmt and args for name
alloc_workqueue() currently expects the passed in @name pointer to remain
accessible. This is inconvenient and a bit silly given that the whole wq
is being dynamically allocated. This patch updates alloc_workqueue() and
friends to take printf format string instead of opaque string and matching
varargs at the end. The name is allocated together with the wq and
formatted.
alloc_ordered_workqueue() is converted to a macro to unify varargs
handling with alloc_workqueue(), and, while at it, add comment to
alloc_workqueue().
None of the current in-kernel users pass in string with '%' as constant
name and this change shouldn't cause any problem.
[akpm@linux-foundation.org: use __printf]
Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vasiliy Kulikov [Tue, 10 Jan 2012 23:11:31 +0000 (15:11 -0800)]
procfs: add hidepid= and gid= mount options
Add support for mount options to restrict access to /proc/PID/
directories. The default backward-compatible "relaxed" behaviour is left
untouched.
The first mount option is called "hidepid" and its value defines how much
info about processes we want to be available for non-owners:
hidepid=0 (default) means the old behavior - anybody may read all
world-readable /proc/PID/* files.
hidepid=1 means users may not access any /proc/<pid>/ directories, but
their own. Sensitive files like cmdline, sched*, status are now protected
against other users. As permission checking done in proc_pid_permission()
and files' permissions are left untouched, programs expecting specific
files' modes are not confused.
hidepid=2 means hidepid=1 plus all /proc/PID/ will be invisible to other
users. It doesn't mean that it hides whether a process exists (it can be
learned by other means, e.g. by kill -0 $PID), but it hides process' euid
and egid. It compicates intruder's task of gathering info about running
processes, whether some daemon runs with elevated privileges, whether
another user runs some sensitive program, whether other users run any
program at all, etc.
gid=XXX defines a group that will be able to gather all processes' info
(as in hidepid=0 mode). This group should be used instead of putting
nonroot user in sudoers file or something. However, untrusted users (like
daemons, etc.) which are not supposed to monitor the tasks in the whole
system should not be added to the group.
hidepid=1 or higher is designed to restrict access to procfs files, which
might reveal some sensitive private information like precise keystrokes
timings:
http://www.openwall.com/lists/oss-security/2011/11/05/3
hidepid=1/2 doesn't break monitoring userspace tools. ps, top, pgrep, and
conky gracefully handle EPERM/ENOENT and behave as if the current user is
the only user running processes. pstree shows the process subtree which
contains "pstree" process.
Note: the patch doesn't deal with setuid/setgid issues of keeping
preopened descriptors of procfs files (like
https://lkml.org/lkml/2011/2/7/368). We rely on that the leaked
information like the scheduling counters of setuid apps doesn't threaten
anybody's privacy - only the user started the setuid program may read the
counters.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Greg KH <greg@kroah.com>
Cc: Theodore Tso <tytso@MIT.EDU>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: James Morris <jmorris@namei.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vasiliy Kulikov [Tue, 10 Jan 2012 23:11:27 +0000 (15:11 -0800)]
procfs: parse mount options
Add support for procfs mount options. Actual mount options are coming in
the next patches.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Greg KH <greg@kroah.com>
Cc: Theodore Tso <tytso@MIT.EDU>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: James Morris <jmorris@namei.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Emelyanov [Tue, 10 Jan 2012 23:11:23 +0000 (15:11 -0800)]
procfs: introduce the /proc/<pid>/map_files/ directory
This one behaves similarly to the /proc/<pid>/fd/ one - it contains
symlinks one for each mapping with file, the name of a symlink is
"vma->vm_start-vma->vm_end", the target is the file. Opening a symlink
results in a file that point exactly to the same inode as them vma's one.
For example the ls -l of some arbitrary /proc/<pid>/map_files/
| lr-x------ 1 root root 64 Aug 26 06:40
7f8f80403000-
7f8f80404000 -> /lib64/libc-2.5.so
| lr-x------ 1 root root 64 Aug 26 06:40
7f8f8061e000-
7f8f80620000 -> /lib64/libselinux.so.1
| lr-x------ 1 root root 64 Aug 26 06:40
7f8f80826000-
7f8f80827000 -> /lib64/libacl.so.1.1.0
| lr-x------ 1 root root 64 Aug 26 06:40
7f8f80a2f000-
7f8f80a30000 -> /lib64/librt-2.5.so
| lr-x------ 1 root root 64 Aug 26 06:40
7f8f80a30000-
7f8f80a4c000 -> /lib64/ld-2.5.so
This *helps* checkpointing process in three ways:
1. When dumping a task mappings we do know exact file that is mapped
by particular region. We do this by opening
/proc/$pid/map_files/$address symlink the way we do with file
descriptors.
2. This also helps in determining which anonymous shared mappings are
shared with each other by comparing the inodes of them.
3. When restoring a set of processes in case two of them has a mapping
shared, we map the memory by the 1st one and then open its
/proc/$pid/map_files/$address file and map it by the 2nd task.
Using /proc/$pid/maps for this is quite inconvenient since it brings
repeatable re-reading and reparsing for this text file which slows down
restore procedure significantly. Also as being pointed in (3) it is a way
easier to use top level shared mapping in children as
/proc/$pid/map_files/$address when needed.
[akpm@linux-foundation.org: coding-style fixes]
[gorcunov@openvz.org: make map_files depend on CHECKPOINT_RESTORE]
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: Vasiliy Kulikov <segoon@openwall.com>
Reviewed-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Tejun Heo <tj@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cyrill Gorcunov [Tue, 10 Jan 2012 23:11:20 +0000 (15:11 -0800)]
procfs: make proc_get_link to use dentry instead of inode
Prepare the ground for the next "map_files" patch which needs a name of a
link file to analyse.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vasiliy Kulikov <segoon@openwall.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matt Fleming [Tue, 10 Jan 2012 23:11:17 +0000 (15:11 -0800)]
signal: add block_sigmask() for adding sigmask to current->blocked
Abstract the code sequence for adding a signal handler's sa_mask to
current->blocked because the sequence is identical for all architectures.
Furthermore, in the past some architectures actually got this code wrong,
so introduce a wrapper that all architectures can use.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matt Fleming [Tue, 10 Jan 2012 23:11:14 +0000 (15:11 -0800)]
sparc: make SA_NOMASK a synonym of SA_NODEFER
Unlike other architectures, sparc currently has no SA_NODEFER definition
but only the older SA_NOMASK. Since SA_NOMASK is the historical name for
SA_NODEFER, add SA_NODEFER and copy what other architectures do by making
SA_NOMASK a synonym for SA_NODEFER.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Frederic Weisbecker [Tue, 10 Jan 2012 23:11:11 +0000 (15:11 -0800)]
reiserfs: don't lock root inode searching
Nothing requires that we lock the filesystem until the root inode is
provided.
Also iget5_locked() triggers a warning because we are holding the
filesystem lock while allocating the inode, which result in a lockdep
suspicion that we have a lock inversion against the reclaim path:
[ 1986.896979] =================================
[ 1986.896990] [ INFO: inconsistent lock state ]
[ 1986.896997] 3.1.1-main #8
[ 1986.897001] ---------------------------------
[ 1986.897007] inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage.
[ 1986.897016] kswapd0/16 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 1986.897023] (&REISERFS_SB(s)->lock){+.+.?.}, at: [<
c01f8bd4>] reiserfs_write_lock+0x20/0x2a
[ 1986.897044] {RECLAIM_FS-ON-W} state was registered at:
[ 1986.897050] [<
c014a5b9>] mark_held_locks+0xae/0xd0
[ 1986.897060] [<
c014aab3>] lockdep_trace_alloc+0x7d/0x91
[ 1986.897068] [<
c0190ee0>] kmem_cache_alloc+0x1a/0x93
[ 1986.897078] [<
c01e7728>] reiserfs_alloc_inode+0x13/0x3d
[ 1986.897088] [<
c01a5b06>] alloc_inode+0x14/0x5f
[ 1986.897097] [<
c01a5cb9>] iget5_locked+0x62/0x13a
[ 1986.897106] [<
c01e99e0>] reiserfs_fill_super+0x410/0x8b9
[ 1986.897114] [<
c01953da>] mount_bdev+0x10b/0x159
[ 1986.897123] [<
c01e764d>] get_super_block+0x10/0x12
[ 1986.897131] [<
c0195b38>] mount_fs+0x59/0x12d
[ 1986.897138] [<
c01a80d1>] vfs_kern_mount+0x45/0x7a
[ 1986.897147] [<
c01a83e3>] do_kern_mount+0x2f/0xb0
[ 1986.897155] [<
c01a987a>] do_mount+0x5c2/0x612
[ 1986.897163] [<
c01a9a72>] sys_mount+0x61/0x8f
[ 1986.897170] [<
c044060c>] sysenter_do_call+0x12/0x32
[ 1986.897181] irq event stamp:
7509691
[ 1986.897186] hardirqs last enabled at (
7509691): [<
c0190f34>] kmem_cache_alloc+0x6e/0x93
[ 1986.897197] hardirqs last disabled at (
7509690): [<
c0190eea>] kmem_cache_alloc+0x24/0x93
[ 1986.897209] softirqs last enabled at (
7508896): [<
c01294bd>] __do_softirq+0xee/0xfd
[ 1986.897222] softirqs last disabled at (
7508859): [<
c01030ed>] do_softirq+0x50/0x9d
[ 1986.897234]
[ 1986.897235] other info that might help us debug this:
[ 1986.897242] Possible unsafe locking scenario:
[ 1986.897244]
[ 1986.897250] CPU0
[ 1986.897254] ----
[ 1986.897257] lock(&REISERFS_SB(s)->lock);
[ 1986.897265] <Interrupt>
[ 1986.897269] lock(&REISERFS_SB(s)->lock);
[ 1986.897276]
[ 1986.897277] *** DEADLOCK ***
[ 1986.897278]
[ 1986.897286] no locks held by kswapd0/16.
[ 1986.897291]
[ 1986.897292] stack backtrace:
[ 1986.897299] Pid: 16, comm: kswapd0 Not tainted 3.1.1-main #8
[ 1986.897306] Call Trace:
[ 1986.897314] [<
c0439e76>] ? printk+0xf/0x11
[ 1986.897324] [<
c01482d1>] print_usage_bug+0x20e/0x21a
[ 1986.897332] [<
c01479b8>] ? print_irq_inversion_bug+0x172/0x172
[ 1986.897341] [<
c014855c>] mark_lock+0x27f/0x483
[ 1986.897349] [<
c0148d88>] __lock_acquire+0x628/0x1472
[ 1986.897358] [<
c0149fae>] lock_acquire+0x47/0x5e
[ 1986.897366] [<
c01f8bd4>] ? reiserfs_write_lock+0x20/0x2a
[ 1986.897384] [<
c01f8bd4>] ? reiserfs_write_lock+0x20/0x2a
[ 1986.897397] [<
c043b5ef>] mutex_lock_nested+0x35/0x26f
[ 1986.897409] [<
c01f8bd4>] ? reiserfs_write_lock+0x20/0x2a
[ 1986.897421] [<
c01f8bd4>] reiserfs_write_lock+0x20/0x2a
[ 1986.897433] [<
c01e2edd>] map_block_for_writepage+0xc9/0x590
[ 1986.897448] [<
c01b1706>] ? create_empty_buffers+0x33/0x8f
[ 1986.897461] [<
c0121124>] ? get_parent_ip+0xb/0x31
[ 1986.897472] [<
c043ef7f>] ? sub_preempt_count+0x81/0x8e
[ 1986.897485] [<
c043cae0>] ? _raw_spin_unlock+0x27/0x3d
[ 1986.897496] [<
c0121124>] ? get_parent_ip+0xb/0x31
[ 1986.897508] [<
c01e355d>] reiserfs_writepage+0x1b9/0x3e7
[ 1986.897521] [<
c0173b40>] ? clear_page_dirty_for_io+0xcb/0xde
[ 1986.897533] [<
c014a6e3>] ? trace_hardirqs_on_caller+0x108/0x138
[ 1986.897546] [<
c014a71e>] ? trace_hardirqs_on+0xb/0xd
[ 1986.897559] [<
c0177b38>] shrink_page_list+0x34f/0x5e2
[ 1986.897572] [<
c01780a7>] shrink_inactive_list+0x172/0x22c
[ 1986.897585] [<
c0178464>] shrink_zone+0x303/0x3b1
[ 1986.897597] [<
c043cae0>] ? _raw_spin_unlock+0x27/0x3d
[ 1986.897611] [<
c01788c9>] kswapd+0x3b7/0x5f2
The deadlock shouldn't happen since we are doing that allocation in the
mount path, the filesystem is not available for any reclaim. Still the
warning is annoying.
To solve this, acquire the lock later only where we need it, right before
calling reiserfs_read_locked_inode() that wants to lock to walk the tree.
Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Frederic Weisbecker [Tue, 10 Jan 2012 23:11:09 +0000 (15:11 -0800)]
reiserfs: don't lock journal_init()
journal_init() doesn't need the lock since no operation on the filesystem
is involved there. journal_read() and get_list_bitmap() have yet to be
reviewed carefully though before removing the lock there. Just keep the
it around these two calls for safety.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Frederic Weisbecker [Tue, 10 Jan 2012 23:11:07 +0000 (15:11 -0800)]
reiserfs: delay reiserfs lock until journal initialization
In the mount path, transactions that are made before journal
initialization don't involve the filesystem. We can delay the reiserfs
lock until we play with the journal.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Davidlohr Bueso [Tue, 10 Jan 2012 23:11:05 +0000 (15:11 -0800)]
reiserfs: delete comments referring to the BKL
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ben Hutchings [Tue, 10 Jan 2012 23:11:02 +0000 (15:11 -0800)]
drivers/rtc/interface.c: fix alarm rollover when day or month is out-of-range
Commit
f44f7f96a20a ("RTC: Initialize kernel state from RTC") introduced a
potential infinite loop. If an alarm time contains a wildcard month and
an invalid day (> 31), or a wildcard year and an invalid month (>= 12),
the loop searching for the next matching date will never terminate. Treat
the invalid values as wildcards.
Fixes <http://bugs.debian.org/646429>, <http://bugs.debian.org/653331>
Reported-by: leo weppelman <leoweppelman@googlemail.com>
Reported-by: "P. van Gaans" <mailme667@yahoo.co.uk>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Benoit Cousson [Tue, 10 Jan 2012 23:10:59 +0000 (15:10 -0800)]
drivers/rtc/rtc-twl.c: add DT support for RTC inside twl4030/twl6030
Add the DT support for the TI rtc-twl present in the twl4030 and twl6030
devices.
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Lars-Peter Clausen [Tue, 10 Jan 2012 23:10:58 +0000 (15:10 -0800)]
drivers/rtc/: remove redundant spi driver bus initialization
In ancient times it was necessary to manually initialize the bus field of
an spi_driver to spi_bus_type. These days this is done in
spi_driver_register(), so we can drop the manual assignment.
The patch was generated using the following coccinelle semantic patch:
// <smpl>
@@
identifier _driver;
@@
struct spi_driver _driver = {
.driver = {
- .bus = &spi_bus_type,
},
};
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:10:55 +0000 (15:10 -0800)]
drivers/rtc/rtc-jz4740.c: make jz4740_rtc_driver static
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:10:52 +0000 (15:10 -0800)]
drivers/rtc/rtc-mc13xxx.c: make mc13xxx_rtc_idtable static
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:10:48 +0000 (15:10 -0800)]
rtc: convert drivers/rtc/* to use module_platform_driver()
This patch converts the drivers in drivers/rtc/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Ben Dooks <ben@simtec.co.uk>
Cc: John Stultz <john.stultz@linaro.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Tue, 10 Jan 2012 23:10:44 +0000 (15:10 -0800)]
drivers/rtc/rtc-wm831x.c: convert to devm_kzalloc()
Marginally less code and eliminate the possibility of memory leaks.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Tue, 10 Jan 2012 23:10:43 +0000 (15:10 -0800)]
drivers/rtc/rtc-wm831x.c: remove unused period IRQ handler
Due to changes in the RTC core the period interrupt is now unused so
delete the code managing it.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Godfrey [Tue, 10 Jan 2012 23:10:42 +0000 (15:10 -0800)]
rtc/ab8500: add calibration attribute to AB8500 RTC
The rtc_calibration attribute allows user-space to get and set the
AB8500's RtcCalibration register. The AB8500 will then use the value in
this register to compensate for RTC drift every 60 seconds.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Mark Godfrey <mark.godfrey@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Walleij [Tue, 10 Jan 2012 23:10:41 +0000 (15:10 -0800)]
drivers/rtc/rtc-ab8500.c: change msleep() to usleep_range()
The resolution of msleep is related to HZ, so with HZ set to 100 any
msleep of less than 10ms will become ~10ms. This is not what we want.
Use the hrtimer-based usleep_range() and allow for some slack in the
non-critical path so we have more control of what is happening here.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Jonas Aaberg <jonas.aberg@stericsson.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Lynn [Tue, 10 Jan 2012 23:10:38 +0000 (15:10 -0800)]
rtc/ab8500: set can_wake flag
Set can_wake flag so wakealarm property is visible in sysfs.
Signed-off-by: Andrew Lynn <andrew.lynn@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robert Marklund [Tue, 10 Jan 2012 23:10:35 +0000 (15:10 -0800)]
rtc/ab8500: don't disable IRQ:s when suspending
We want this driver to be able to wake up the system.
Signed-off-by: Robert Marklund <robert.marklund@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yauhen Kharuzhy [Tue, 10 Jan 2012 23:10:34 +0000 (15:10 -0800)]
drivers/rtc/rtc-mxc.c: make alarm work
Fix alarm IRQ handling, make the alarm one-shot. Cleanup black magick
with a validation of already validated time data.
Add ability to wake the system with alarm.
[akpm@linux-foundation.org: fix CONFIG_PM=n build]
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yauhen Kharuzhy [Tue, 10 Jan 2012 23:10:32 +0000 (15:10 -0800)]
drivers/rtc/rtc-mxc.c: fix setting time for MX1 SoC
There is no way to track year in the i.MX1 RTC: Days Counter register is
9-bit wide only. Attempt to save date after 1970-01-01 plus 512 days
causes endless loop in mxc_rtc_set_mmss(). Fix this by resetting year to
1970.
[akpm@linux-foundation.org: use conventional comment layout]
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ondrej Zary [Tue, 10 Jan 2012 23:10:26 +0000 (15:10 -0800)]
drivers/rtc/rtc-cmos.c: fix broken NVRAM bank 2 writing
Fix writing to NVRAM bank 2 in rtc-cmos driver. It never worked since its
introduction in 2.6.28 because of a typo.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Daney [Tue, 10 Jan 2012 23:10:22 +0000 (15:10 -0800)]
MIPS: randomize PIE load address
... by selecting ARCH_BINFMT_ELF_RANDOMIZE_PIE
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Daney [Tue, 10 Jan 2012 23:10:21 +0000 (15:10 -0800)]
fs: binfmt_elf: create Kconfig variable for PIE randomization
Randomization of PIE load address is hard coded in binfmt_elf.c for X86
and ARM. Create a new Kconfig variable
(CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE) for this and use it instead. Thus
architecture specific policy is pushed out of the generic binfmt_elf.c and
into the architecture Kconfig files.
X86 and ARM Kconfigs are modified to select the new variable so there is
no change in behavior. A follow on patch will select it for MIPS too.
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joakim Tjernlund [Tue, 10 Jan 2012 23:10:18 +0000 (15:10 -0800)]
crc32: optimize inner loop
Taking a pointer reference to each row in the crc table matrix, one can
reduce the inner loop with a few insn's
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Cc: Bob Pearson <rpearson@systemfabricworks.com>
Cc: Frank Zago <fzago@systemfabricworks.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:15 +0000 (15:10 -0800)]
checkpatch: catch all occurences of type and cast spacing errors per line
Fix up type and cast spacing checks such that all occurences on a line are
examined and reported. For example the line below has a valid cast and a
bad type, but currently we check the cast first which is good and stop:
u16* bar = (u16 *)baz;
We will also only report one of the errors in this example:
u16* bar = (u16*)bad;
Move to iterating across all casts and all types, reporting any failure.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:13 +0000 (15:10 -0800)]
checkpatch: typeof may have more complex arguments
typeof may have various more complex forms as its arguement, not just an
identifier. For now allow us to leak to the first close perenthesis ')'.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:11 +0000 (15:10 -0800)]
checkpatch: ensure cast type is unique in the context parser
Ensure the cast type is unique in the context parser, we do not want them
to detect as a comma ','.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:10 +0000 (15:10 -0800)]
checkpatch: fix complex macros handling of square brackets
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:08 +0000 (15:10 -0800)]
checkpatch: fix 'return is not a function' square bracket handling
We are incorrectly matching square brackets '[' and ']' leading to false
positives on more complex functions as below:
return (dt3155_fbuffer[m]->ready_head -
dt3155_fbuffer[m]->ready_len +
dt3155_fbuffer[m]->nbuffers)%
(dt3155_fbuffer[m]->nbuffers);
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:06 +0000 (15:10 -0800)]
checkpatch: complex macro should allow the empty do while loop
It is common to stub out a function as below, this is triggering a complex
macro format incorrectly. Sort this out:
#define cma_early_regions_reserve(reserve) do { } while (0)
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:04 +0000 (15:10 -0800)]
checkpatch: fix EXPORT_SYMBOL handling following a function
The following fragment defeats the DEVICE_ATTR style handing, check for
and ignore the close brace '}' in this context:
int foo()
{
}
DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
ata_scsi_lpm_show, ata_scsi_lpm_put);
EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:03 +0000 (15:10 -0800)]
checkpatch: only apply kconfig help checks for options which prompt
The intent of this check is to catch the options which the user will see
and ensure they are properly described. It is also common for internal
only options to have a brief description. Allow this form.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:01 +0000 (15:10 -0800)]
checkpatch: optimise statement scanner when mid-statement
In the middle of a long definition or similar, there is no possibility of
finding a smaller sub-statement. Optimise this case by skipping statement
aquirey where there are no starts of statement (open brace '{' or
semi-colon ';'). We are likely to scan slightly more than needed still
but this is safest.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:10:00 +0000 (15:10 -0800)]
checkpatch: ## is not a valid modifier
Inserting a # into the modifiers list will incorrectly add the null string
to the modifiers list, leading to an infinite loop. As neither of these
is a valid modifier form simply ignore them.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Tue, 10 Jan 2012 23:09:58 +0000 (15:09 -0800)]
checkpatch: improve memset and min/max with cast checking
Improve the checking of arguments to memset and min/max tests.
Move the checking of min/max to statement blocks instead of single line.
Change $Constant to allow any case type 0x initiator and trailing ul
specifier. Add $FuncArg type as any function argument with or without a
cast. Print the whole statement when showing memset or min/max messages.
Improve the memset with 0 as 3rd argument error message.
There are still weaknesses in the $FuncArg and $Constant code as arbitrary
parentheses and negative signs are not generically supported.
[akpm@linux-foundation.org: fix per Andy]
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:09:57 +0000 (15:09 -0800)]
checkpatch: check for common memset parameter issues against statments
Move the memset checks over to work against the statement. Also add
checks for 0 and 1 used as lengths. Generally these indicate badly
ordered parameters.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Tue, 10 Jan 2012 23:09:54 +0000 (15:09 -0800)]
checkpatch: correctly track the end of preprocessor commands in context
When looking for a statement we currently run on through preprocessor
commands. This means that a header file with just definitions is parsed
over and over again combining all of the lines from the current line to
the end of file leading to severe performance issues.
Fix up context accumulation to track preprocessor commands and stop when
reaching the end of them. At the same time vastly simplify the #define
handling.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Tue, 10 Jan 2012 23:09:52 +0000 (15:09 -0800)]
checkpatch: prefer __printf over __attribute__((format(printf,...)))
Add a warn for not using __printf.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Tue, 10 Jan 2012 23:09:50 +0000 (15:09 -0800)]
checkpatch: update signature "might be better as" warning
email header lines can look like signature tags. It's valid to have
multiple email recipients on a single line but not valid to have multiple
signatures on a single line.
Validate signatures only when not in the email headers.
Clear the $in_commit_log flag when the patch filename appears.
Add '-' to the valid chars in a message header for headers
like "Message-Id:" and "In-Reply-To:".
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Steve Hodgson [Tue, 10 Jan 2012 23:09:47 +0000 (15:09 -0800)]
btree: export btree_get_prev() so modules can use btree_for_each
The btree_for_each API is implemented with macros that internally call
btree_get_prev(), so if btree_get_prev() isn't exported then modules fail
to link if they try to use one of the btree_for_each macros. Since the
rest of the btree API is exported, we should keep things orthogonal and
make this work too.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Steve Hodgson <steve@purestorage.com>
Acked-by: Joern Engel <joern@logfs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Tue, 10 Jan 2012 23:09:46 +0000 (15:09 -0800)]
leds: convert wm8350 driver to devm_kzalloc()
Saves a small amount of code and systematically eliminates leaks.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Tue, 10 Jan 2012 23:09:45 +0000 (15:09 -0800)]
leds: convert wm831x status driver to devm_kzalloc()
Saves a small amount of code and systematically eliminates leaks.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:09:43 +0000 (15:09 -0800)]
drivers/leds/leds-mc13783.c: fix off-by-one for checking num_leds
The LED id begins from 0. Thus the maximum number of leds should be
MC13783_LED_MAX + 1.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Philippe Retornaz <philippe.retornaz@epfl.ch>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Tue, 10 Jan 2012 23:09:40 +0000 (15:09 -0800)]
leds: add driver for TCA6507 LED controller
TI's TCA6507 is the LED driver in the GTA04 Openmoko motherboard. The
driver provides full support for brightness levels and hardware blinking.
This driver can drive each of 7 outputs as an LED or a GPIO output,
and provides hardware-assist blinking.
[akpm@linux-foundation.org: fix __mod_i2c_device_table alias]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:09:37 +0000 (15:09 -0800)]
drivers/leds/leds-netxbig.c: use gpio_request_one()
Use gpio_request_one() instead of multiple gpiolib calls. This also
simplifies error handling a bit.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:09:35 +0000 (15:09 -0800)]
drivers/leds/leds-bd2802.c: use gpio_request_one()
Use gpio_request_one() instead of multiple gpiolib calls.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Kim Kyuwon <q1.kim@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:09:34 +0000 (15:09 -0800)]
drivers/leds/leds-lp5523.c: remove unneeded forward declaration
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:09:30 +0000 (15:09 -0800)]
leds: convert leds-dac124s085 to module_spi_driver
Factor out some boilerplate code for spi driver registration into
module_spi_driver.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Haojian Zhuang <hzhuang1@marvell.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: Mike Rapoport <mike@compulab.co.il>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:09:27 +0000 (15:09 -0800)]
leds: convert led i2c drivers to module_i2c_driver
Factor out some boilerplate code for i2c driver registration
into module_i2c_driver.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Haojian Zhuang <hzhuang1@marvell.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 10 Jan 2012 23:09:24 +0000 (15:09 -0800)]
leds: convert led platform drivers to module_platform_driver
Factor out some boilerplate code for platform driver registration into
module_platform_driver.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Haojian Zhuang <hzhuang1@marvell.com> [led-88pm860x.c]
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Tue, 10 Jan 2012 23:09:22 +0000 (15:09 -0800)]
backlight: convert pwm_bl to dev_pm_ops
Should be no functional changes, mainly a reorganisation to support future
work.
[akpm@linux-foundation.org: fix CONFIG_PM=n build]
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Tue, 10 Jan 2012 23:09:21 +0000 (15:09 -0800)]
backlight: convert platform_lcd to devm_kzalloc()
Saves some error handling code and eliminates a class of leaks.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jingoo Han [Tue, 10 Jan 2012 23:09:19 +0000 (15:09 -0800)]
backlight: use kstrtoul()
The usage of simple_strtoul() or strict_strtoul() is not preferred. Thus,
kstrtoul should be used.
This patch also fixes checkpatch error as follows:
ERROR: space required after that ',' (ctx:VxV)
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jingoo Han [Tue, 10 Jan 2012 23:09:18 +0000 (15:09 -0800)]
drivers/video/backlight/ep93xx_bl.c: remove duplicated header include
module.h is included twice.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ryan Mallon <rmallon@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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