From: Yuki Tsunashima <ytsunashima@jp.adit-jv.com> lost wakeup can occur after enabling irq, therefore put task into interruptible before enabling interrupts, without this change, task can be put to sleep and snd_pcm_drain will delay Signed-off-by: Yuki Tsunashima <ytsunashima@jp.adit-jv.com> Signed-off-by: Suresh Udipi <sudipi@jp.adit-jv.com> [ported from 4.9] Signed-off-by: Adam Miartus <amiartus@de.adit-jv.com> --- sound/core/pcm_native.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 860543a..fe333c8 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1874,6 +1874,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, if (!to_check) break; /* all drained */ init_waitqueue_entry(&wait, current); + set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&to_check->sleep, &wait); snd_pcm_stream_unlock_irq(substream); if (runtime->no_period_wakeup) @@ -1886,7 +1887,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, } tout = msecs_to_jiffies(tout * 1000); } - tout = schedule_timeout_interruptible(tout); + tout = schedule_timeout(tout); snd_pcm_stream_lock_irq(substream); group = snd_pcm_stream_group_ref(substream); -- 2.7.4