From: Ondrej Jirman megi@xff.cz
[ Upstream commit 205c29887a333ee4b37596e6533373e38cb23947 ]
Enabling strobe and then setting brightness to 0 causes the driver to enter invalid state after strobe end timer fires. We should cancel strobe mode resources when changing brightness (aka torch mode).
Fixes: cef8ec8cbd21 ("leds: add sgm3140 driver") Signed-off-by: Ondrej Jirman megi@xff.cz Link: https://lore.kernel.org/r/20240217191133.1757553-1-megi@xff.cz Signed-off-by: Lee Jones lee@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/leds/flash/leds-sgm3140.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/leds/flash/leds-sgm3140.c b/drivers/leds/flash/leds-sgm3140.c index d3f50dca51366..991b3db63ebe7 100644 --- a/drivers/leds/flash/leds-sgm3140.c +++ b/drivers/leds/flash/leds-sgm3140.c @@ -114,8 +114,11 @@ static int sgm3140_brightness_set(struct led_classdev *led_cdev, "failed to enable regulator: %d\n", ret); return ret; } + gpiod_set_value_cansleep(priv->flash_gpio, 0); gpiod_set_value_cansleep(priv->enable_gpio, 1); } else { + del_timer_sync(&priv->powerdown_timer); + gpiod_set_value_cansleep(priv->flash_gpio, 0); gpiod_set_value_cansleep(priv->enable_gpio, 0); ret = regulator_disable(priv->vin_regulator); if (ret) {