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[v3] media: imx-mipi-csis: Check csis_fmt validity before use

Message ID 20230216014401.225603-1-marex@denx.de (mailing list archive)
State New, archived
Headers show
Series [v3] media: imx-mipi-csis: Check csis_fmt validity before use | expand

Commit Message

Marek Vasut Feb. 16, 2023, 1:44 a.m. UTC 
The find_csis_format() may return NULL in case supported format is not
found, check the return value of find_csis_format() before using the
result to avoid NULL pointer dereference.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Fixes: 11927d0fd0d0 ("media: imx-mipi-csis: Use V4L2 subdev active state")
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Rui Miguel Silva <rmfrfs@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-media@vger.kernel.org
---
V2: Add blank line
V3: Return -EPIPE
---
 drivers/media/platform/nxp/imx-mipi-csis.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/media/platform/nxp/imx-mipi-csis.c b/drivers/media/platform/nxp/imx-mipi-csis.c
index e99633565463e..be2768a479951 100644
--- a/drivers/media/platform/nxp/imx-mipi-csis.c
+++ b/drivers/media/platform/nxp/imx-mipi-csis.c
@@ -1109,6 +1109,9 @@  static int mipi_csis_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
 	csis_fmt = find_csis_format(fmt->code);
 	v4l2_subdev_unlock_state(state);
 
+	if (!csis_fmt)
+		return -EPIPE;
+
 	fd->type = V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL;
 	fd->num_entries = 1;