ASoC: wm_adsp: Correct some missing locking
The recent refactoring overlooked some places which should be covered by
the pwr_lock, all code that affects or depends on the power status of
the DSP should be covered, this patch adds the missing coverage.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index ed615ce..09e50e5 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -2552,6 +2552,8 @@ int wm_adsp2_early_event(struct snd_soc_dapm_widget *w,
queue_work(system_unbound_wq, &dsp->boot_work);
break;
case SND_SOC_DAPM_PRE_PMD:
+ mutex_lock(&dsp->pwr_lock);
+
wm_adsp_debugfs_clear(dsp);
dsp->fw_id = 0;
@@ -2567,6 +2569,8 @@ int wm_adsp2_early_event(struct snd_soc_dapm_widget *w,
wm_adsp_free_alg_regions(dsp);
+ mutex_unlock(&dsp->pwr_lock);
+
adsp_dbg(dsp, "Shutdown complete\n");
break;
default:
@@ -2589,8 +2593,12 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_POST_PMU:
flush_work(&dsp->boot_work);
- if (!dsp->booted)
- return -EIO;
+ mutex_lock(&dsp->pwr_lock);
+
+ if (!dsp->booted) {
+ ret = -EIO;
+ goto err;
+ }
ret = wm_adsp2_ena(dsp);
if (ret != 0)
@@ -2610,14 +2618,10 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
dsp->running = true;
- mutex_lock(&dsp->pwr_lock);
-
if (wm_adsp_fw[dsp->fw].num_caps != 0) {
ret = wm_adsp_buffer_init(dsp);
- if (ret < 0) {
- mutex_unlock(&dsp->pwr_lock);
+ if (ret < 0)
goto err;
- }
}
mutex_unlock(&dsp->pwr_lock);
@@ -2662,6 +2666,7 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
err:
regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
ADSP2_SYS_ENA | ADSP2_CORE_ENA | ADSP2_START, 0);
+ mutex_unlock(&dsp->pwr_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wm_adsp2_event);