linux/sound/firewire/digi00x
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: firewire-digi00x: add support for MIDI ports corresponding to isochronous packet streaming 2015-10-11 18:26:04 +02:00
amdtp-dot.c locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE() 2017-10-25 11:01:08 +02:00
digi00x-hwdep.c ALSA: firewire-digi00x: enclose identifiers referred by single function 2017-01-05 16:58:07 +01:00
digi00x-midi.c ALSA: firewire-digi00x: allow user space applications to read/write MIDI messages for all ports 2017-04-05 21:34:11 +02:00
digi00x-pcm.c ALSA: firewire: arrange common PCM info/constraints for AMDTP engine applications 2017-06-08 09:15:44 +02:00
digi00x-proc.c ALSA: firewire-digi00x: add proc node to show clock status 2015-09-30 15:35:31 +02:00
digi00x-stream.c ALSA: firewire-digi00x: add support for MIDI ports corresponding to isochronous packet streaming 2015-10-11 18:26:04 +02:00
digi00x-transaction.c ALSA: firewire-digi00x: remove transaction handler for unknown purpose 2017-04-05 21:34:13 +02:00
digi00x.c ALSA: firewire-digi00x: add support for console models of Digi00x series 2017-04-05 21:34:08 +02:00
digi00x.h ALSA: firewire: remove support for 16 bit PCM samples in playback substream 2017-05-22 16:24:08 +02:00