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[4.14,014/117] ASoC: Intel: atom: Take the drv->lock mutex before calling sst_send_slot_map()

Message ID 20200501131546.751570895@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH May 1, 2020, 1:20 p.m. UTC 
From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 81630dc042af998b9f58cd8e2c29dab9777ea176 ]

sst_send_slot_map() uses sst_fill_and_send_cmd_unlocked() because in some
places it is called with the drv->lock mutex already held.

So it must always be called with the mutex locked. This commit adds missing
locking in the sst_set_be_modules() code-path.

Fixes: 24c8d14192cc ("ASoC: Intel: mrfld: add DSP core controls")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200402185359.3424-1-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/atom/sst-atom-controls.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/sound/soc/intel/atom/sst-atom-controls.c b/sound/soc/intel/atom/sst-atom-controls.c
index 6044b3bbb1211..999eb3ba78672 100644
--- a/sound/soc/intel/atom/sst-atom-controls.c
+++ b/sound/soc/intel/atom/sst-atom-controls.c
@@ -974,7 +974,9 @@  static int sst_set_be_modules(struct snd_soc_dapm_widget *w,
 	dev_dbg(c->dev, "Enter: widget=%s\n", w->name);
 
 	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		mutex_lock(&drv->lock);
 		ret = sst_send_slot_map(drv);
+		mutex_unlock(&drv->lock);
 		if (ret)
 			return ret;
 		ret = sst_send_pipe_module_params(w, k);