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media: am437x-vpfe: Setting STD to current value is not an error

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[ Upstream commit 13aa21cfe92ce9ebb51824029d89f19c33f81419 ]

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 <[email protected]>
Acked-by: Lad Prabhakar <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Benoit Parrot 2019-09-20 14:05:48 -03:00 • committed by Greg Kroah-Hartman
commit 95206abb46
1 changed files with 4 additions and 0 deletions
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4
drivers/media/platform/am437x/am437x-vpfe.c
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@ -1830,6 +1830,10 @@ 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__);