| Message ID | 20250617-must_check-devm_mutex_init-v7-2-d9e449f4d224@weissschuh.net |
|---|---|
| State | New |
| Headers | show |
| Series | locking/mutex: Mark devm_mutex_init() as __must_check | expand |
diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c index 52b97c9f2a03567aa12d4f63a951593a5e7017d5..0962c00c215a11f555a7878a3b65824b5219a1fa 100644 --- a/drivers/leds/leds-lp8860.c +++ b/drivers/leds/leds-lp8860.c @@ -307,7 +307,9 @@ static int lp8860_probe(struct i2c_client *client) led->client = client; led->led_dev.brightness_set_blocking = lp8860_brightness_set; - devm_mutex_init(&client->dev, &led->lock); + ret = devm_mutex_init(&client->dev, &led->lock); + if (ret) + return dev_err_probe(&client->dev, ret, "Failed to initialize lock\n"); led->regmap = devm_regmap_init_i2c(client, &lp8860_regmap_config); if (IS_ERR(led->regmap)) {
devm_mutex_init() can fail. With CONFIG_DEBUG_MUTEXES=y the mutex will be marked as unusable and trigger errors on usage. Add the missed check. Fixes: 87a59548af95 ("leds: lp8860: Use new mutex guards to cleanup function exits") Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Andrew Davis <afd@ti.com> --- drivers/leds/leds-lp8860.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)