Merge branch 'stable-3.2' into pandora-3.2

[pandora-kernel.git] / sound / core / seq / seq_prioq.c

diff --git a/sound/core/seq/seq_prioq.c b/sound/core/seq/seq_prioq.c
index 29896ab..15c5d67 100644 (file)
--- a/sound/core/seq/seq_prioq.c
+++ b/sound/core/seq/seq_prioq.c
@@ -89,7 +89,7 @@ void snd_seq_prioq_delete(struct snd_seq_prioq **fifo)
        if (f->cells > 0) {
                /* drain prioQ */
                while (f->cells > 0)
-                       snd_seq_cell_free(snd_seq_prioq_cell_out(f));
+                       snd_seq_cell_free(snd_seq_prioq_cell_out(f, NULL));
        }
        
        kfree(f);
@@ -216,8 +216,18 @@ int snd_seq_prioq_cell_in(struct snd_seq_prioq * f,
        return 0;
 }
 
+/* return 1 if the current time >= event timestamp */
+static int event_is_ready(struct snd_seq_event *ev, void *current_time)
+{
+       if ((ev->flags & SNDRV_SEQ_TIME_STAMP_MASK) == SNDRV_SEQ_TIME_STAMP_TICK)
+               return snd_seq_compare_tick_time(current_time, &ev->time.tick);
+       else
+               return snd_seq_compare_real_time(current_time, &ev->time.time);
+}
+
 /* dequeue cell from prioq */
-struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f)
+struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
+                                                 void *current_time)
 {
        struct snd_seq_event_cell *cell;
        unsigned long flags;
@@ -229,6 +239,8 @@ struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f)
        spin_lock_irqsave(&f->lock, flags);
 
        cell = f->head;
+       if (cell && current_time && !event_is_ready(&cell->event, current_time))
+               cell = NULL;
        if (cell) {
                f->head = cell->next;
 
@@ -255,17 +267,6 @@ int snd_seq_prioq_avail(struct snd_seq_prioq * f)
 }
 
 
-/* peek at cell at the head of the prioq */
-struct snd_seq_event_cell *snd_seq_prioq_cell_peek(struct snd_seq_prioq * f)
-{
-       if (f == NULL) {
-               snd_printd("oops: snd_seq_prioq_cell_in() called with NULL prioq\n");
-               return NULL;
-       }
-       return f->head;
-}
-
-
 static inline int prioq_match(struct snd_seq_event_cell *cell,
                              int client, int timestamp)
 {