[PATCH] media: imx: csi: fix enum_mbus_code for unknown mbus format codes

[Philipp Zabel]

If no imx_media_pixfmt is found for a given mbus format code,
we shouldn't crash. Return -EINVAL for any index.

Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
 drivers/staging/media/imx/imx-media-csi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/staging/media/imx/imx-media-csi.c 
b/drivers/staging/media/imx/imx-media-csi.c
index eb7be5093a9d..89903f267d60 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -1138,6 +1138,10 @@ static int csi_enum_mbus_code(struct v4l2_subdev *sd,
 
        infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, code->which);
        incc = imx_media_find_mbus_format(infmt->code, CS_SEL_ANY, true);
+       if (!incc) {
+               ret = -EINVAL;
+               goto out;
+       }
 
        switch (code->pad) {
        case CSI_SINK_PAD:
-- 
2.15.1