3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <ti...@suse.de>
commit 86f0b5b86d142b9323432fef078a6cf0fb5dda74 upstream.
snd_pcm_stop() must be called in the PCM substream lock context.
Signed-off-by: Takashi Iwai <ti...@suse.de>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
Cc: Weng Meiling <wengmeiling.w...@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/line6/pcm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/staging/line6/pcm.c
+++ b/drivers/staging/line6/pcm.c
@@ -378,8 +378,11 @@ static int snd_line6_pcm_free(struct snd
*/
static void pcm_disconnect_substream(struct snd_pcm_substream *substream)
{
- if (substream->runtime && snd_pcm_running(substream))
+ if (substream->runtime && snd_pcm_running(substream)) {
+ snd_pcm_stream_lock_irq(substream);
snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED);
+ snd_pcm_stream_unlock_irq(substream);
+ }
}
/*
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