From: JongHo Kim <furmuwon@gmail.com>
Date: Tue, 17 Dec 2013 14:02:24 +0000 (+0900)
Subject: ALSA: Add SNDRV_PCM_STATE_PAUSED case in wait_for_avail function
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ed697e1aaf7237b1a62af39f64463b05c262808d;p=openwrt%2Fstaging%2Fblogic.git

ALSA: Add SNDRV_PCM_STATE_PAUSED case in wait_for_avail function

When the process is sleeping at the SNDRV_PCM_STATE_PAUSED
state from the wait_for_avail function, the sleep process will be woken by
timeout(10 seconds). Even if the sleep process wake up by timeout, by this
patch, the process will continue with sleep and wait for the other state.

Signed-off-by: JongHo Kim <furmuwon@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 6e03b465e44e..a2104671f51d 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1937,6 +1937,8 @@ static int wait_for_avail(struct snd_pcm_substream *substream,
 		case SNDRV_PCM_STATE_DISCONNECTED:
 			err = -EBADFD;
 			goto _endloop;
+		case SNDRV_PCM_STATE_PAUSED:
+			continue;
 		}
 		if (!tout) {
 			snd_printd("%s write error (DMA or IRQ trouble?)\n",