sound: Add missing spin_unlock

Add a spin_unlock missing on the error path.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E1;
@@

* spin_lock(E1,...);
  <+... when != E1
  if (...) {
    ... when != E1
*   return ...;
  }
  ...+>
* spin_unlock(E1,...);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/sound/oss/dmasound/dmasound_atari.c b/sound/oss/dmasound/dmasound_atari.c
index 1f4774123064..13c214466d3b 100644
--- a/sound/oss/dmasound/dmasound_atari.c
+++ b/sound/oss/dmasound/dmasound_atari.c
@@ -1277,7 +1277,7 @@ static irqreturn_t AtaInterrupt(int irq, void *dummy)
                  * (almost) like on the TT.
                  */
                 write_sq_ignore_int = 0;
-                return IRQ_HANDLED;
+                goto out;
         }
 
         if (!write_sq.active) {
@@ -1285,7 +1285,7 @@ static irqreturn_t AtaInterrupt(int irq, void *dummy)
                  * the sq variables, so better don't do anything here.
                  */
                 WAKE_UP(write_sq.sync_queue);
-                return IRQ_HANDLED;
+                goto out;
         }
 
         /* Probably ;) one frame is finished. Well, in fact it may be that a
@@ -1322,6 +1322,7 @@ static irqreturn_t AtaInterrupt(int irq, void *dummy)
         /* We are not playing after AtaPlay(), so there
            is nothing to play any more. Wake up a process
            waiting for audio output to drain. */
+out:
         spin_unlock(&dmasound.lock);
         return IRQ_HANDLED;
 }