linux/sound/firewire/oxfw
Mark Rutland 6aa7de0591 locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()
Please do not apply this to mainline directly, instead please re-run the
coccinelle script shown below and apply its output.

For several reasons, it is desirable to use {READ,WRITE}_ONCE() in
preference to ACCESS_ONCE(), and new code is expected to use one of the
former. So far, there's been no reason to change most existing uses of
ACCESS_ONCE(), as these aren't harmful, and changing them results in
churn.

However, for some features, the read/write distinction is critical to
correct operation. To distinguish these cases, separate read/write
accessors must be used. This patch migrates (most) remaining
ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following
coccinelle script:

----
// Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and
// WRITE_ONCE()

// $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch

virtual patch

@ depends on patch @
expression E1, E2;
@@

- ACCESS_ONCE(E1) = E2
+ WRITE_ONCE(E1, E2)

@ depends on patch @
expression E;
@@

- ACCESS_ONCE(E)
+ READ_ONCE(E)
----

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davem@davemloft.net
Cc: linux-arch@vger.kernel.org
Cc: mpe@ellerman.id.au
Cc: shuah@kernel.org
Cc: snitzer@redhat.com
Cc: thor.thayer@linux.intel.com
Cc: tj@kernel.org
Cc: viro@zeniv.linux.org.uk
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-10-25 11:01:08 +02:00
..
Makefile ALSA: oxfw: add scs1x layer 2015-12-22 11:51:27 +01:00
oxfw-command.c ALSA: firewire-lib/bebob/oxfw: improve response evaluation for AV/C commands 2017-04-05 21:37:23 +02:00
oxfw-hwdep.c ALSA: oxfw: Add hwdep interface 2014-12-10 10:50:00 +01:00
oxfw-midi.c ALSA: firewire: Constify snd_rawmidi_ops 2017-01-12 12:50:38 +01:00
oxfw-pcm.c ALSA: firewire: arrange common PCM info/constraints for AMDTP engine applications 2017-06-08 09:15:44 +02:00
oxfw-proc.c ALSA: oxfw: some signedness bugs 2014-12-15 10:03:21 +01:00
oxfw-scs1x.c locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE() 2017-10-25 11:01:08 +02:00
oxfw-spkr.c ALSA: oxfw: move model-specific parameters from common structure 2015-12-22 11:50:31 +01:00
oxfw-stream.c ALSA: firewire-lib: enable the same feature as CIP_SKIP_INIT_DBC_CHECK flag 2016-05-10 17:04:01 +02:00
oxfw.c ALSA: oxfw: fix regression to handle Stanton SCS.1m/1d 2017-04-05 21:35:14 +02:00
oxfw.h sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00