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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2021-06-24 15:32:02 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-08-04 15:43:51 +0300 |
| commit | 4d7adf0236c18befcac449fa1938e32f4bd1ddad (patch) | |
| tree | 00e8de1c047ee3e08179f515dbc64d55e7f778c9 /drivers/media | |
| parent | a40eba9b26f70c7a967647a05ce0ef84e82140ba (diff) | |
| download | linux-4d7adf0236c18befcac449fa1938e32f4bd1ddad.tar.xz | |
media: v4l2-flash: Check whether setting LED brightness succeeded
Setting LED brightness may return an error but the return value was never
checked by the V4L2 flash LED class. Do it now.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-flash-led-class.c | 38 |
1 files changed, 21 insertions, 17 deletions
diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c index 4c096ae4648d..e70e128ccc9c 100644 --- a/drivers/media/v4l2-core/v4l2-flash-led-class.c +++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c @@ -76,8 +76,8 @@ static s32 __led_brightness_to_intensity(struct v4l2_ctrl *ctrl, return (brightness * ctrl->step) + ctrl->minimum; } -static void v4l2_flash_set_led_brightness(struct v4l2_flash *v4l2_flash, - struct v4l2_ctrl *ctrl) +static int v4l2_flash_set_led_brightness(struct v4l2_flash *v4l2_flash, + struct v4l2_ctrl *ctrl) { struct v4l2_ctrl **ctrls = v4l2_flash->ctrls; struct led_classdev *led_cdev; @@ -103,20 +103,20 @@ static void v4l2_flash_set_led_brightness(struct v4l2_flash *v4l2_flash, if (ctrl == ctrls[TORCH_INTENSITY]) { if (ctrls[LED_MODE]->val != V4L2_FLASH_LED_MODE_TORCH) - return; + return 0; if (WARN_ON_ONCE(!v4l2_flash->fled_cdev)) - return; + return -EINVAL; led_cdev = &v4l2_flash->fled_cdev->led_cdev; } else { if (WARN_ON_ONCE(!v4l2_flash->iled_cdev)) - return; + return -EINVAL; led_cdev = v4l2_flash->iled_cdev; } - led_set_brightness_sync(led_cdev, brightness); + return led_set_brightness_sync(led_cdev, brightness); } static int v4l2_flash_update_led_brightness(struct v4l2_flash *v4l2_flash, @@ -222,8 +222,7 @@ static int v4l2_flash_s_ctrl(struct v4l2_ctrl *c) switch (c->id) { case V4L2_CID_FLASH_TORCH_INTENSITY: case V4L2_CID_FLASH_INDICATOR_INTENSITY: - v4l2_flash_set_led_brightness(v4l2_flash, c); - return 0; + return v4l2_flash_set_led_brightness(v4l2_flash, c); } if (!fled_cdev) @@ -262,9 +261,8 @@ static int v4l2_flash_s_ctrl(struct v4l2_ctrl *c) if (ret < 0) return ret; - v4l2_flash_set_led_brightness(v4l2_flash, - ctrls[TORCH_INTENSITY]); - return 0; + return v4l2_flash_set_led_brightness(v4l2_flash, + ctrls[TORCH_INTENSITY]); } break; case V4L2_CID_FLASH_STROBE_SOURCE: @@ -511,13 +509,19 @@ static int __sync_device_with_v4l2_controls(struct v4l2_flash *v4l2_flash) struct v4l2_ctrl **ctrls = v4l2_flash->ctrls; int ret = 0; - if (ctrls[TORCH_INTENSITY]) - v4l2_flash_set_led_brightness(v4l2_flash, - ctrls[TORCH_INTENSITY]); + if (ctrls[TORCH_INTENSITY]) { + ret = v4l2_flash_set_led_brightness(v4l2_flash, + ctrls[TORCH_INTENSITY]); + if (ret < 0) + return ret; + } - if (ctrls[INDICATOR_INTENSITY]) - v4l2_flash_set_led_brightness(v4l2_flash, - ctrls[INDICATOR_INTENSITY]); + if (ctrls[INDICATOR_INTENSITY]) { + ret = v4l2_flash_set_led_brightness(v4l2_flash, + ctrls[INDICATOR_INTENSITY]); + if (ret < 0) + return ret; + } if (ctrls[FLASH_TIMEOUT]) { if (WARN_ON_ONCE(!fled_cdev)) |