From: Dan Carpenter dan.carpenter@linaro.org
[ Upstream commit 34164202a5827f60a203ca9acaf2d9f7d432aac8 ]
The get_channel_from_mode() function is supposed to return the channel which matches the mode. But it has a bug where if it doesn't find a matching channel then it returns the last channel. It should return NULL instead.
Also remove an unnecessary NULL check on "channel".
Fixes: 2870b52bae4c ("greybus: lights: add lights implementation") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Reviewed-by: Rui Miguel Silva rmfrfs@gmail.com Reviewed-by: Alex Elder elder@linaro.org Link: https://lore.kernel.org/r/379c0cb4-39e0-4293-8a18-c7b1298e5420@moroto.mounta... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/staging/greybus/light.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/greybus/light.c b/drivers/staging/greybus/light.c index db06cd544af58..8c5819d1e1abe 100644 --- a/drivers/staging/greybus/light.c +++ b/drivers/staging/greybus/light.c @@ -102,15 +102,15 @@ static struct led_classdev *get_channel_cdev(struct gb_channel *channel) static struct gb_channel *get_channel_from_mode(struct gb_light *light, u32 mode) { - struct gb_channel *channel = NULL; + struct gb_channel *channel; int i;
for (i = 0; i < light->channels_count; i++) { channel = &light->channels[i]; - if (channel && channel->mode == mode) - break; + if (channel->mode == mode) + return channel; } - return channel; + return NULL; }
static int __gb_lights_flash_intensity_set(struct gb_channel *channel,