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-rw-r--r--sound/soc/sof/core.c1
-rw-r--r--sound/soc/sof/ops.h11
-rw-r--r--sound/soc/sof/sof-priv.h2
3 files changed, 11 insertions, 3 deletions
diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index adc7c37145d6..2b85ef5d6092 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -316,6 +316,7 @@ int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data)
INIT_LIST_HEAD(&sdev->route_list);
spin_lock_init(&sdev->ipc_lock);
spin_lock_init(&sdev->hw_lock);
+ mutex_init(&sdev->power_state_access);
if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE))
INIT_WORK(&sdev->probe_work, sof_probe_work);
diff --git a/sound/soc/sof/ops.h b/sound/soc/sof/ops.h
index 95e748b36903..4c1f9daaa6e8 100644
--- a/sound/soc/sof/ops.h
+++ b/sound/soc/sof/ops.h
@@ -208,11 +208,16 @@ static inline int
snd_sof_dsp_set_power_state(struct snd_sof_dev *sdev,
const struct sof_dsp_power_state *target_state)
{
+ int ret = 0;
+
+ mutex_lock(&sdev->power_state_access);
+
if (sof_ops(sdev)->set_power_state)
- return sof_ops(sdev)->set_power_state(sdev, target_state);
+ ret = sof_ops(sdev)->set_power_state(sdev, target_state);
- /* D0 substate is not supported, do nothing here. */
- return 0;
+ mutex_unlock(&sdev->power_state_access);
+
+ return ret;
}
/* debug */
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 68da8f797403..28d19fa30614 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -375,6 +375,8 @@ struct snd_sof_dev {
/* current DSP power state */
struct sof_dsp_power_state dsp_power_state;
+ /* mutex to protect the dsp_power_state access */
+ struct mutex power_state_access;
/* Intended power target of system suspend */
enum sof_system_suspend_state system_suspend_target;