Patchwork [26/75] ALSA: pxa2xx: Fix unlocked snd_pcm_stop() call

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Submitter Kamal Mostafa
Date July 30, 2013, 3:16 p.m.
Message ID <1375197464-27962-27-git-send-email-kamal@canonical.com>
Download mbox | patch
Permalink /patch/263429/
State New
Headers show

Comments

Kamal Mostafa - July 30, 2013, 3:16 p.m.
3.8.13.6 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@suse.de>

commit 46f6c1aaf790be9ea3c8ddfc8f235a5f677d08e2 upstream.

snd_pcm_stop() must be called in the PCM substream lock context.

Acked-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 sound/arm/pxa2xx-pcm-lib.c | 2 ++
 1 file changed, 2 insertions(+)

Patch

diff --git a/sound/arm/pxa2xx-pcm-lib.c b/sound/arm/pxa2xx-pcm-lib.c
index 76e0d56..823359e 100644
--- a/sound/arm/pxa2xx-pcm-lib.c
+++ b/sound/arm/pxa2xx-pcm-lib.c
@@ -166,7 +166,9 @@  void pxa2xx_pcm_dma_irq(int dma_ch, void *dev_id)
 	} else {
 		printk(KERN_ERR "%s: DMA error on channel %d (DCSR=%#x)\n",
 			rtd->params->name, dma_ch, dcsr);
+		snd_pcm_stream_lock(substream);
 		snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
+		snd_pcm_stream_unlock(substream);
 	}
 }
 EXPORT_SYMBOL(pxa2xx_pcm_dma_irq);