diff options
| author | Andy Shevchenko <andy.shevchenko@gmail.com> | 2021-05-10 12:50:43 +0300 |
|---|---|---|
| committer | Pavel Machek <pavel@ucw.cz> | 2021-05-28 13:00:16 +0300 |
| commit | 95138e01275e1af3f1fc2780fe1d9c6138b29c7a (patch) | |
| tree | 7a83ae4e08ad3ba0f8b80b0ffe7522bd49483052 /drivers/leds | |
| parent | d33e98a1f3ee76f38668304f9ffce49af07da77a (diff) | |
| download | linux-95138e01275e1af3f1fc2780fe1d9c6138b29c7a.tar.xz | |
leds: pwm: Make error handling more robust
It's easy to miss necessary clean up, e.g. firmware node reference counting,
during error path in ->probe(). Make it more robust by moving to a single
point of return.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-pwm.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c index f53f9309ca6c..d71e9fa5c8de 100644 --- a/drivers/leds/leds-pwm.c +++ b/drivers/leds/leds-pwm.c @@ -101,7 +101,7 @@ static int led_pwm_create_fwnode(struct device *dev, struct led_pwm_priv *priv) { struct fwnode_handle *fwnode; struct led_pwm led; - int ret = 0; + int ret; memset(&led, 0, sizeof(led)); @@ -111,8 +111,8 @@ static int led_pwm_create_fwnode(struct device *dev, struct led_pwm_priv *priv) led.name = to_of_node(fwnode)->name; if (!led.name) { - fwnode_handle_put(fwnode); - return -EINVAL; + ret = EINVAL; + goto err_child_out; } led.active_low = fwnode_property_read_bool(fwnode, @@ -121,12 +121,14 @@ static int led_pwm_create_fwnode(struct device *dev, struct led_pwm_priv *priv) &led.max_brightness); ret = led_pwm_add(dev, priv, &led, fwnode); - if (ret) { - fwnode_handle_put(fwnode); - break; - } + if (ret) + goto err_child_out; } + return 0; + +err_child_out: + fwnode_handle_put(fwnode); return ret; } |