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authorRichard Fitzgerald <rf@opensource.cirrus.com>2023-09-13 19:02:50 +0300
committerMark Brown <broonie@kernel.org>2023-09-13 20:50:33 +0300
commit781118bc2fc1026c8285f83ea7ecab07071a09c4 (patch)
tree45d7080a3e9b883904fab678e3810715c5a5d658 /sound/soc
parent69343ce91435f222052015c5af86b550391bac85 (diff)
downloadlinux-781118bc2fc1026c8285f83ea7ecab07071a09c4.tar.xz
ASoC: wm_adsp: Fix missing locking in wm_adsp_[read|write]_ctl()
wm_adsp_read_ctl() and wm_adsp_write_ctl() must hold the cs_dsp pwr_lock mutex when calling cs_dsp_coeff_read_ctrl() and cs_dsp_coeff_write_ctrl(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://lore.kernel.org/r/20230913160250.3700346-1-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/wm_adsp.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 6fc34f41b175..d1b9238d391e 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -687,7 +687,10 @@ int wm_adsp_write_ctl(struct wm_adsp *dsp, const char *name, int type,
struct wm_coeff_ctl *ctl;
int ret;
+ mutex_lock(&dsp->cs_dsp.pwr_lock);
ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len);
+ mutex_unlock(&dsp->cs_dsp.pwr_lock);
+
if (ret < 0)
return ret;
@@ -703,8 +706,14 @@ EXPORT_SYMBOL_GPL(wm_adsp_write_ctl);
int wm_adsp_read_ctl(struct wm_adsp *dsp, const char *name, int type,
unsigned int alg, void *buf, size_t len)
{
- return cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(&dsp->cs_dsp, name, type, alg),
- 0, buf, len);
+ int ret;
+
+ mutex_lock(&dsp->cs_dsp.pwr_lock);
+ ret = cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(&dsp->cs_dsp, name, type, alg),
+ 0, buf, len);
+ mutex_unlock(&dsp->cs_dsp.pwr_lock);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(wm_adsp_read_ctl);