VIDIOC_S_STD should not return an error if the value is identical
to the current one.
This error was highlighted by the v4l2-compliance test.
Signed-off-by: Benoit Parrot <bparrot@xxxxxx>
---
drivers/media/platform/am437x/am437x-vpfe.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c
index 03415c179c85..8b218f48428f 100644
--- a/drivers/media/platform/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/am437x/am437x-vpfe.c
@@ -1822,6 +1822,10 @@ static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
return -ENODATA;
+ /* if trying to set the same std then nothing to do */
+ if (vpfe_standards[vpfe->std_index].std_id == std_id)
+ return 0;
+
/* If streaming is started, return error */
if (vb2_is_busy(&vpfe->buffer_queue)) {
vpfe_err(vpfe, "%s device busy\n", __func__);
--
2.17.1
