[PATCH 2/3] ASoC: Intel: atom: Check drv->lock is locked in sst_fill_and_send_cmd_unlocked

[Hans de Goede]

sst_fill_and_send_cmd_unlocked must be called with the drv->lock mutex
locked already. In the past there have been cases where this was not the
case, add a WARN_ON to check for drv->lock being locked.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 sound/soc/intel/atom/sst-atom-controls.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/intel/atom/sst-atom-controls.c b/sound/soc/intel/atom/sst-atom-controls.c
index 2c3798034b1d..5bd2c2ec177b 100644
--- a/sound/soc/intel/atom/sst-atom-controls.c
+++ b/sound/soc/intel/atom/sst-atom-controls.c
@@ -50,6 +50,8 @@ static int sst_fill_and_send_cmd_unlocked(struct sst_data *drv,
 {
 	int ret = 0;
 
+	WARN_ON(!mutex_is_locked(&drv->lock));
+
 	ret = sst_fill_byte_control(drv, ipc_msg,
 				block, task_id, pipe_id, len, cmd_data);
 	if (ret < 0)
-- 
2.26.0