On Wed, 18 Oct 2017 01:45:49 +0200, Ben Hutchings wrote: > > 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. > > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx> Yeah, this conditional build makes little sense nowadays although it was meaningful in 20 years ago. Applied now, thanks. Takashi