3.6.11.9-rc1 stable review patch.
If anyone has any objections, please let me know.

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

From: Takashi Iwai <ti...@suse.de>

[ Upstream commit cc7282b8d5abbd48c81d1465925d464d9e3eaa8f ]

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

Cc: <sta...@vger.kernel.org>
Signed-off-by: Takashi Iwai <ti...@suse.de>
Signed-off-by: Steven Rostedt <rost...@goodmis.org>
---
 sound/pci/atiixp.c       |    2 ++
 sound/pci/atiixp_modem.c |    2 ++
 2 files changed, 4 insertions(+)

diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index 31020d2..1231353 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -688,7 +688,9 @@ static void snd_atiixp_xrun_dma(struct atiixp *chip, struct 
atiixp_dma *dma)
        if (! dma->substream || ! dma->running)
                return;
        snd_printdd("atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
+       snd_pcm_stream_lock(dma->substream);
        snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
+       snd_pcm_stream_unlock(dma->substream);
 }
 
 /*
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index 79e204e..3662140 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -638,7 +638,9 @@ static void snd_atiixp_xrun_dma(struct atiixp_modem *chip,
        if (! dma->substream || ! dma->running)
                return;
        snd_printdd("atiixp-modem: XRUN detected (DMA %d)\n", dma->ops->type);
+       snd_pcm_stream_lock(dma->substream);
        snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
+       snd_pcm_stream_unlock(dma->substream);
 }
 
 /*
-- 
1.7.10.4


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