diff mbox series

media: v4l2-common: Reduce warnings about missing V4L2_CID_LINK_FREQ control

Message ID 20250508083745.1697364-1-niklas.soderlund+renesas@ragnatech.se
State New
Headers show
Series media: v4l2-common: Reduce warnings about missing V4L2_CID_LINK_FREQ control | expand

Commit Message

Niklas Söderlund May 8, 2025, 8:37 a.m. UTC 
When operating a pipeline with a missing V4L2_CID_LINK_FREQ control this
two line warning is printed each time the pipeline is started. Reduce
this excessive logging by only warning once for the missing control.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
 drivers/media/v4l2-core/v4l2-common.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 4ee4aa19efe6..09412989f9b3 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -497,10 +497,10 @@  s64 __v4l2_get_link_freq_ctrl(struct v4l2_ctrl_handler *handler,
 
 		freq = div_u64(v4l2_ctrl_g_ctrl_int64(ctrl) * mul, div);
 
-		pr_warn("%s: Link frequency estimated using pixel rate: result might be inaccurate\n",
-			__func__);
-		pr_warn("%s: Consider implementing support for V4L2_CID_LINK_FREQ in the transmitter driver\n",
-			__func__);
+		pr_warn_once("%s: Link frequency estimated using pixel rate: result might be inaccurate\n",
+			     __func__);
+		pr_warn_once("%s: Consider implementing support for V4L2_CID_LINK_FREQ in the transmitter driver\n",
+			     __func__);
 	}
 
 	return freq > 0 ? freq : -EINVAL;