Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6

[~andy/linux] / sound / core / pcm_lib.c

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index abfeff1611ce271eabe0bd98a1b75f613d626f96..f1341308bedaa585311896d3b62dcca8b86395cb 100644 (file)
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1756,8 +1756,18 @@ static int wait_for_avail(struct snd_pcm_substream *substream,
        wait_queue_t wait;
        int err = 0;
        snd_pcm_uframes_t avail = 0;
-       long tout;
-
+       long wait_time, tout;
+
+       if (runtime->no_period_wakeup)
+               wait_time = MAX_SCHEDULE_TIMEOUT;
+       else {
+               wait_time = 10;
+               if (runtime->rate) {
+                       long t = runtime->period_size * 2 / runtime->rate;
+                       wait_time = max(t, wait_time);
+               }
+               wait_time = msecs_to_jiffies(wait_time * 1000);
+       }
        init_waitqueue_entry(&wait, current);
        add_wait_queue(&runtime->tsleep, &wait);
        for (;;) {
@@ -1765,9 +1775,8 @@ static int wait_for_avail(struct snd_pcm_substream *substream,
                        err = -ERESTARTSYS;
                        break;
                }
-               set_current_state(TASK_INTERRUPTIBLE);
                snd_pcm_stream_unlock_irq(substream);
-               tout = schedule_timeout(msecs_to_jiffies(10000));
+               tout = schedule_timeout_interruptible(wait_time);
                snd_pcm_stream_lock_irq(substream);
                switch (runtime->status->state) {
                case SNDRV_PCM_STATE_SUSPENDED: