[PATCH 6.9 158/374] media: v4l: Dont turn on privacy LED if streamon fails

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6.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>

[ Upstream commit f2bf6cd8f44781349620e30a0af8987fe9af008f ]

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 <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Reviewed-by: Umang Jain <umang.jain@xxxxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/media/v4l2-core/v4l2-subdev.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 45836f0a2b0a7..19d20871afefa 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) {
@@ -428,9 +419,20 @@ static int call_s_stream(struct v4l2_subdev *sd, int enable)
 		ret = 0;
 	}
 
-	if (!ret)
+	if (!ret) {
 		sd->enabled_streams = enable ? BIT(0) : 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
+	}
+
 	return ret;
 }
 
-- 
2.43.0







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