OMAP: ASoC: Fix spinlock misuse in omap-pcm.c

omap_pcm_trigger is called also in interrupt context so CPU flags must
be restored when returning.

Signed-off-by: Eero Nurkkala <ext-eero.nurkkala@nokia.com>
Acked-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index b0362dfd5b71..dd3bb2933762 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -175,9 +175,10 @@ static int omap_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 {
         struct snd_pcm_runtime *runtime = substream->runtime;
         struct omap_runtime_data *prtd = runtime->private_data;
+        unsigned long flags;
         int ret = 0;
 
-        spin_lock_irq(&prtd->lock);
+        spin_lock_irqsave(&prtd->lock, flags);
         switch (cmd) {
         case SNDRV_PCM_TRIGGER_START:
         case SNDRV_PCM_TRIGGER_RESUME:
@@ -195,7 +196,7 @@ static int omap_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
         default:
                 ret = -EINVAL;
         }
-        spin_unlock_irq(&prtd->lock);
+        spin_unlock_irqrestore(&prtd->lock, flags);
 
         return ret;
 }