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media: ipu6: Obtain unique source pad from remote sub-device

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Obtain unique source pad from a remote sub-device, instead of the first
one. This means that only one link may be active at stream start. There's
no functional change in practice, unless multiple CSI-2 transmitters are
directly connected to the receiver.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Bingbu Cao <bingbu.cao@intel.com>
Tested-by: Mehdi Djait <mehdi.djait@linux.intel.com> # Dell XPS 9315
Reviewed-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Sakari Ailus 2025-11-06 11:56:40 +02:00 committed by Hans Verkuil
parent b613b2fedb
commit 7c30585091
1 changed files with 3 additions and 3 deletions
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6
drivers/media/pci/intel/ipu6/ipu6-isys-video.c
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@ -1204,10 +1204,10 @@ int ipu6_isys_setup_video(struct ipu6_isys_video *av,
remote_sd = media_entity_to_v4l2_subdev(remote_pad->entity);
asd = to_ipu6_isys_subdev(remote_sd);
source_pad = media_pad_remote_pad_first(&remote_pad->entity->pads[0]);
if (!source_pad) {
source_pad = media_pad_remote_pad_unique(&remote_pad->entity->pads[0]);
if (IS_ERR(source_pad)) {
dev_dbg(dev, "No external source entity\n");
return -ENODEV;
return PTR_ERR(source_pad);
}
*source_entity = source_pad->entity;