ASoC: dwc: Don't allow negative use counts

Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>

diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
index d202c7c..bd2fcd7 100644 (file)
--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -280,7 +280,8 @@ static int dw_i2s_trigger(struct snd_pcm_substream *substream,
        case SNDRV_PCM_TRIGGER_STOP:
        case SNDRV_PCM_TRIGGER_SUSPEND:
        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-               dev->active--;
+               if (dev->active > 0)
+                       dev->active--;
                i2s_stop(dev, substream);
                break;
        default: