Commit 8027a9ad authored by 蒋家盛's avatar 蒋家盛 Committed by Philipp Zabel
Browse files

drm/imx: imx-ldb: Check for null pointer after calling kmemdup 



As the possible failure of the allocation, kmemdup() may return NULL
pointer.
Therefore, it should be better to check the return value of kmemdup()
and return error if fails.

Fixes: dc80d703 ("drm/imx-ldb: Add support to drm-bridge")
Signed-off-by: default avatarJiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220105074729.2363657-1-jiasheng@iscas.ac.cn
parent 31231092

drivers/gpu/drm/imx/imx-ldb.c

+2 −0
Original line number Diff line number Diff line
@@ -572,6 +572,8 @@ static int imx_ldb_panel_ddc(struct device *dev, 
		edidp = of_get_property(child, "edid", &edid_len);

		if (edidp) {

			channel->edid = kmemdup(edidp, edid_len, GFP_KERNEL);

			if (!channel->edid)

				return -ENOMEM;

		} else if (!channel->panel) {

			/* fallback to display-timings node */

			ret = of_get_drm_display_mode(child,