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leds: lp8860: Use new mutex guards to cleanup function exits

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Use scoped mutex guards to simplify return paths. While here use
devm_mutex_init() to register the muxex so it also is cleaned
up automatically.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20250407183555.409687-2-afd@ti.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Andrew Davis 2025-04-07 13:35:51 -05:00 • committed by Lee Jones
parent 4bab18dcb4
commit 87a59548af
1 changed files with 11 additions and 16 deletions
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27
drivers/leds/leds-lp8860.c
View file

@ -135,7 +135,7 @@ static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock)
{
int ret;
mutex_lock(&led->lock);
guard(mutex)(&led->lock);
if (lock == LP8860_UNLOCK_EEPROM) {
ret = regmap_write(led->regmap,
@ -143,7 +143,7 @@ static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock)
LP8860_EEPROM_CODE_1);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
goto out;
return ret;
}
ret = regmap_write(led->regmap,
@ -151,14 +151,14 @@ static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock)
LP8860_EEPROM_CODE_2);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
goto out;
return ret;
}
ret = regmap_write(led->regmap,
LP8860_EEPROM_UNLOCK,
LP8860_EEPROM_CODE_3);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
goto out;
return ret;
}
} else {
ret = regmap_write(led->regmap,
@ -166,8 +166,6 @@ static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock)
LP8860_LOCK_EEPROM);
}
out:
mutex_unlock(&led->lock);
return ret;
}
@ -204,30 +202,29 @@ static int lp8860_brightness_set(struct led_classdev *led_cdev,
int disp_brightness = brt_val * 255;
int ret;
mutex_lock(&led->lock);
guard(mutex)(&led->lock);
ret = lp8860_fault_check(led);
if (ret) {
dev_err(&led->client->dev, "Cannot read/clear faults\n");
goto out;
return ret;
}
ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_MSB,
(disp_brightness & 0xff00) >> 8);
if (ret) {
dev_err(&led->client->dev, "Cannot write CL1 MSB\n");
goto out;
return ret;
}
ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_LSB,
disp_brightness & 0xff);
if (ret) {
dev_err(&led->client->dev, "Cannot write CL1 LSB\n");
goto out;
return ret;
}
out:
mutex_unlock(&led->lock);
return ret;
return 0;
}
static int lp8860_init(struct lp8860_led *led)
@ -392,7 +389,7 @@ static int lp8860_probe(struct i2c_client *client)
led->client = client;
led->led_dev.brightness_set_blocking = lp8860_brightness_set;
mutex_init(&led->lock);
devm_mutex_init(&client->dev, &led->lock);
i2c_set_clientdata(client, led);
@ -443,8 +440,6 @@ static void lp8860_remove(struct i2c_client *client)
dev_err(&led->client->dev,
"Failed to disable regulator\n");
}
mutex_destroy(&led->lock);
}
static const struct i2c_device_id lp8860_id[] = {