Patch "media: nxp: imx8-isi: Mark all crossbar sink pads as MUST_CONNECT" has been added to the 6.7-stable tree

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This is a note to let you know that I've just added the patch titled

    media: nxp: imx8-isi: Mark all crossbar sink pads as MUST_CONNECT

to the 6.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     media-nxp-imx8-isi-mark-all-crossbar-sink-pads-as-mu.patch
and it can be found in the queue-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 7cf01042771473b0225472c90a13bbba534c5c56
Author: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Date:   Mon Jan 15 04:16:29 2024 +0200

    media: nxp: imx8-isi: Mark all crossbar sink pads as MUST_CONNECT
    
    [ Upstream commit 9b71021b2ea537632b01e51e3f003df24a637858 ]
    
    All the sink pads of the crossbar switch require an active link if
    they're part of the pipeline. Mark them with the
    MEDIA_PAD_FL_MUST_CONNECT flag to fail pipeline validation if they're
    not connected. This allows removing a manual check when translating
    streams.
    
    Cc: stable@xxxxxxxxxxxxxxx # 6.1
    Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
    Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
    Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
index 44354931cf8a1..c9a4d091b5707 100644
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
@@ -160,13 +160,6 @@ mxc_isi_crossbar_xlate_streams(struct mxc_isi_crossbar *xbar,
 	}
 
 	pad = media_pad_remote_pad_first(&xbar->pads[sink_pad]);
-	if (!pad) {
-		dev_dbg(xbar->isi->dev,
-			"no pad connected to crossbar input %u\n",
-			sink_pad);
-		return ERR_PTR(-EPIPE);
-	}
-
 	sd = media_entity_to_v4l2_subdev(pad->entity);
 	if (!sd) {
 		dev_dbg(xbar->isi->dev,
@@ -471,7 +464,8 @@ int mxc_isi_crossbar_init(struct mxc_isi_dev *isi)
 	}
 
 	for (i = 0; i < xbar->num_sinks; ++i)
-		xbar->pads[i].flags = MEDIA_PAD_FL_SINK;
+		xbar->pads[i].flags = MEDIA_PAD_FL_SINK
+				    | MEDIA_PAD_FL_MUST_CONNECT;
 	for (i = 0; i < xbar->num_sources; ++i)
 		xbar->pads[i + xbar->num_sinks].flags = MEDIA_PAD_FL_SOURCE;
 




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