Fix the possible dead lock shown below:
spin_lock sst_get_stream_status sst_period_elapsed intel_sst_interrupt handle_IRQ_event handle_fasteoi_irq do_IRQ common_interrupt spin_lock sst_set_stream_status sst_platform_pcm_trigger
Signed-off-by: Lu Guanqun guanqun.lu@intel.com --- sound/soc/mid-x86/sst_platform.c | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/sound/soc/mid-x86/sst_platform.c b/sound/soc/mid-x86/sst_platform.c index 9ba9414..d827edb 100644 --- a/sound/soc/mid-x86/sst_platform.c +++ b/sound/soc/mid-x86/sst_platform.c @@ -116,18 +116,20 @@ struct snd_soc_dai_driver sst_platform_dai[] = { static inline void sst_set_stream_status(struct sst_runtime_stream *stream, int state) { - spin_lock(&stream->status_lock); + unsigned long flags; + spin_lock_irqsave(&stream->status_lock, flags); stream->stream_status = state; - spin_unlock(&stream->status_lock); + spin_unlock_irqrestore(&stream->status_lock, flags); }
static inline int sst_get_stream_status(struct sst_runtime_stream *stream) { int state; + unsigned long flags;
- spin_lock(&stream->status_lock); + spin_lock_irqsave(&stream->status_lock, flags); state = stream->stream_status; - spin_unlock(&stream->status_lock); + spin_unlock_irqrestore(&stream->status_lock, flags); return state; }