Hi

On Fri, Oct 25, 2019 at 03:13:53PM +0800, Shengjiu Wang wrote:

...

xrun may happen at the end of stream, the trigger->fsl_esai_trigger_stop maybe called in the middle of fsl_esai_hw_reset, this may cause esai in wrong state after stop, and there may be endless xrun interrupt.

This issue may also happen with trigger->fsl_esai_trigger_start.

So Add spin lock to lock those functions.

Fixes: 7ccafa2b3879 ("ASoC: fsl_esai: recover the channel swap after xrun") Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com

Some small comments inline. Once they are addressed, please add:

Acked-by: Nicolin Chen nicoleotsuka@gmail.com

Thanks

...

---

Change in v2 -add lock for fsl_esai_trigger_start.

sound/soc/fsl/fsl_esai.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)

diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c index 37b14c48b537..9b28e2af26e4 100644 --- a/sound/soc/fsl/fsl_esai.c +++ b/sound/soc/fsl/fsl_esai.c @@ -33,6 +33,7 @@

• @fsysclk: system clock source to derive HCK, SCK and FS
• @spbaclk: SPBA clock (optional, depending on SoC design)
• @task: tasklet to handle the reset operation

• • @lock: spin lock to handle reset and stop behavior

Should be "between hw_reset() and trigger()" now.

...

• @fifo_depth: depth of tx/rx FIFO
• @slot_width: width of each DAI slot
• @slots: number of slots

@@ -56,6 +57,7 @@ struct fsl_esai { struct clk *fsysclk; struct clk *spbaclk; struct tasklet_struct task;

• spinlock_t lock; /* Protect reset and stop */
  

We can drop the comments here since you add it to the top.

Here is required by the checkpatch.pl, so still is needed.

Best regards Wang shengjiu