From: Andrew Jackson <Andrew.Jackson@arm.com>
Date: Fri, 29 Aug 2014 14:02:38 +0000 (+0100)
Subject: ASoC: dwc: Don't allow negative use counts
X-Git-Tag: accepted/tizen/common/20141203.182822~49
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7ee2331c1e21956509b4622dc26d76c1845793a2;p=platform%2Fkernel%2Flinux-arm64.git

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
--- 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: