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ALSA: seq: Enable 'use' locking in all configurations
authorBen Hutchings <ben.hutchings@codethink.co.uk>
Tue, 17 Oct 2017 23:45:49 +0000 (00:45 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Sat, 11 Nov 2017 13:34:40 +0000 (13:34 +0000)
commit 8009d506a1dd00cf436b0c4cca0dcec130580a21 upstream.

The 'use' locking macros are no-ops if neither SMP or SND_DEBUG is
enabled.  This might once have been OK in non-preemptible
configurations, but even in that case snd_seq_read() may sleep while
relying on a 'use' lock.  So always use the proper implementations.

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
sound/core/seq/seq_lock.c patch | blob | history
sound/core/seq/seq_lock.h patch | blob | history

diff --cc sound/core/seq/seq_lock.c
Simple merge
diff --cc sound/core/seq/seq_lock.h
Simple merge
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