2024-04-10 14:08:50

by Sakari Ailus

[permalink] [raw]
Subject: [PATCH 1/1] media: v4l: Don't turn on privacy LED if streamon fails

Turn on the privacy LED only if streamon succeeds. This can be done after
enabling streaming on the sensor.

Fixes: b6e10ff6c23d ("media: v4l2-core: Make the v4l2-core code enable/disable the privacy LED if present")
Signed-off-by: Sakari Ailus <[email protected]>
---
drivers/media/v4l2-core/v4l2-subdev.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 4c6198c48dd6..acb7c3003ab6 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -412,15 +412,6 @@ static int call_s_stream(struct v4l2_subdev *sd, int enable)
if (WARN_ON(!!sd->enabled_streams == !!enable))
return 0;

-#if IS_REACHABLE(CONFIG_LEDS_CLASS)
- if (!IS_ERR_OR_NULL(sd->privacy_led)) {
- if (enable)
- led_set_brightness(sd->privacy_led,
- sd->privacy_led->max_brightness);
- else
- led_set_brightness(sd->privacy_led, 0);
- }
-#endif
ret = sd->ops->video->s_stream(sd, enable);

if (!enable && ret < 0) {
@@ -431,6 +422,16 @@ static int call_s_stream(struct v4l2_subdev *sd, int enable)
if (!ret)
sd->enabled_streams = enable ? BIT(0) : 0;

+#if IS_REACHABLE(CONFIG_LEDS_CLASS)
+ if (!IS_ERR_OR_NULL(sd->privacy_led) && !(enable && ret < 0)) {
+ if (enable)
+ led_set_brightness(sd->privacy_led,
+ sd->privacy_led->max_brightness);
+ else
+ led_set_brightness(sd->privacy_led, 0);
+ }
+#endif
+
return ret;
}

--
2.39.2