From 9bac67214fbf4b5f23463f7742ccf69bfe684cbd Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Thu, 7 Jan 2021 11:47:25 +0100 Subject: [PATCH] media: imx7: csi: Fix regression for parallel cameras on i.MX6UL Commit 86e02d07871c ("media: imx5/6/7: csi: Mark a bound video mux as a CSI mux") made an incorrect assumption that for imx7-media-csi, the bound subdev must always be a CSI mux. On i.MX6UL/i.MX6ULL there is no CSI mux at all, so do not return an error when the entity is not a video mux and assign the IMX_MEDIA_GRP_ID_CSI_MUX group id only when appropriate. This is the same approach as done in imx-media-csi.c and it fixes the csi probe regression on i.MX6UL. Tested on a imx6ull-evk board. Fixes: 86e02d07871c ("media: imx5/6/7: csi: Mark a bound video mux as a CSI mux") Signed-off-by: Fabio Estevam Signed-off-by: Rui Miguel Silva Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/imx/imx7-media-csi.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c index a3f3df9..31e3616 100644 --- a/drivers/staging/media/imx/imx7-media-csi.c +++ b/drivers/staging/media/imx/imx7-media-csi.c @@ -1164,12 +1164,12 @@ static int imx7_csi_notify_bound(struct v4l2_async_notifier *notifier, struct imx7_csi *csi = imx7_csi_notifier_to_dev(notifier); struct media_pad *sink = &csi->sd.entity.pads[IMX7_CSI_PAD_SINK]; - /* The bound subdev must always be the CSI mux */ - if (WARN_ON(sd->entity.function != MEDIA_ENT_F_VID_MUX)) - return -ENXIO; - - /* Mark it as such via its group id */ - sd->grp_id = IMX_MEDIA_GRP_ID_CSI_MUX; + /* + * If the subdev is a video mux, it must be one of the CSI + * muxes. Mark it as such via its group id. + */ + if (sd->entity.function == MEDIA_ENT_F_VID_MUX) + sd->grp_id = IMX_MEDIA_GRP_ID_CSI_MUX; return v4l2_create_fwnode_links_to_pad(sd, sink); } -- 2.7.4