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| author | Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> | 2015-04-14 14:23:30 -0700 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2015-05-04 11:05:54 -0700 |
| commit | 65c6b7e3ab70effc150dacc9c2fbd6581925dd53 (patch) | |
| tree | e2babc061bd43fe446f8734024c57134a2511ac0 /drivers/leds | |
| parent | e370d010a5fe385ae65635ce0dbb1eff0e25059c (diff) | |
| download | linux-65c6b7e3ab70effc150dacc9c2fbd6581925dd53.tar.gz linux-65c6b7e3ab70effc150dacc9c2fbd6581925dd53.tar.bz2 linux-65c6b7e3ab70effc150dacc9c2fbd6581925dd53.zip | |
leds: gpio: Fix device teardown on probe deferral
In gpio_leds_create(), when devm_get_gpiod_from_child() fails with
-EPROBE_DEFER on the second gpio led to be created, the first already
registered led is not torn down properly. This causes create_gpio_led()
to fail for the first led on re-probe().
Fix this misbehaviour by incrementing num_leds only if all
potentially failing calls completed successfully.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-gpio.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c index 15eb3f86f670..25df4a240972 100644 --- a/drivers/leds/leds-gpio.c +++ b/drivers/leds/leds-gpio.c @@ -217,18 +217,19 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) if (fwnode_property_present(child, "retain-state-suspended")) led.retain_state_suspended = 1; - ret = create_gpio_led(&led, &priv->leds[priv->num_leds++], + ret = create_gpio_led(&led, &priv->leds[priv->num_leds], dev, NULL); if (ret < 0) { fwnode_handle_put(child); goto err; } + priv->num_leds++; } return priv; err: - for (count = priv->num_leds - 2; count >= 0; count--) + for (count = priv->num_leds - 1; count >= 0; count--) delete_gpio_led(&priv->leds[count]); return ERR_PTR(ret); } |