[PATCH v4 12/24] ASoC: codecs: cs-amp-lib: Use guard() for mutex locks

From: bui duc phuc <[email protected]>

Clean up the code using guard() for mutex locks.
Merely code refactoring, and no behavior change.

Reviewed-by: Cezary Rojewski <[email protected]>
Reviewed-by: Richard Fitzgerald <[email protected]>
Signed-off-by: bui duc phuc <[email protected]>
---
 sound/soc/codecs/cs-amp-lib.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/cs-amp-lib.c b/sound/soc/codecs/cs-amp-lib.c
index 371e99205b58..41a9a5b005c6 100644
--- a/sound/soc/codecs/cs-amp-lib.c
+++ b/sound/soc/codecs/cs-amp-lib.c
@@ -7,6 +7,7 @@
 
 #include <asm/byteorder.h>
 #include <kunit/static_stub.h>
+#include <linux/cleanup.h>
 #include <linux/debugfs.h>
 #include <linux/dev_printk.h>
 #include <linux/efi.h>
@@ -83,10 +84,12 @@ static int cs_amp_write_cal_coeff(struct cs_dsp *dsp,
 	KUNIT_STATIC_STUB_REDIRECT(cs_amp_write_cal_coeff, dsp, controls, ctl_name, val);
 
 	if (IS_REACHABLE(CONFIG_FW_CS_DSP)) {
-		mutex_lock(&dsp->pwr_lock);
-		cs_ctl = cs_dsp_get_ctl(dsp, ctl_name, controls->mem_region, controls->alg_id);
-		ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, &beval, sizeof(beval));
-		mutex_unlock(&dsp->pwr_lock);
+		scoped_guard(mutex, &dsp->pwr_lock) {
+			cs_ctl = cs_dsp_get_ctl(dsp, ctl_name,
+						controls->mem_region,
+						controls->alg_id);
+			ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, &beval, sizeof(beval));
+		}
 
 		if (ret < 0) {
 			dev_err(dsp->dev, "Failed to write to '%s': %d\n", ctl_name, ret);
-- 
2.43.0