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Subject: [PATCH 1/2] drm/imx: Fix error handling for a kmemdup() call in
 imx_pd_bind()
From:   Markus Elfring <Markus.Elfring@web.de>
To:     dri-devel@lists.freedesktop.org, kernel@pengutronix.de,
        linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com,
        Daniel Vetter <daniel@ffwll.ch>,
        David Airlie <airlied@linux.ie>,
        Fabio Estevam <festevam@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>,
        Navid Emamdoost <navid.emamdoost@gmail.com>,
        Peter Senna Tschudin <peter.senna@collabora.com>
Cc:     Navid Emamdoost <emamd001@umn.edu>, Kangjie Lu <kjlu@umn.edu>,
        Stephen McCamant <smccaman@umn.edu>,
        Rob Herring <robh@kernel.org>,
        Thierry Reding <thierry.reding@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        kernel-janitors@vger.kernel.org
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Date:   Sat, 12 Oct 2019 11:07:43 +0200
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From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 12 Oct 2019 10:30:21 +0200

The return value from a call of the function =E2=80=9Ckmemdup=E2=80=9D was=
 not checked
in this function implementation. Thus add the corresponding error handling=
.

Fixes: 19022aaae677dfa171a719e9d1ff04823ce65a65 ("staging: drm/imx: Add pa=
rallel display support")
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
=2D--
 drivers/gpu/drm/imx/parallel-display.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/=
parallel-display.c
index 35518e5de356..39c4798f56b6 100644
=2D-- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -210,8 +210,13 @@ static int imx_pd_bind(struct device *dev, struct dev=
ice *master, void *data)
 		return -ENOMEM;

 	edidp =3D of_get_property(np, "edid", &imxpd->edid_len);
-	if (edidp)
+	if (edidp) {
 		imxpd->edid =3D kmemdup(edidp, imxpd->edid_len, GFP_KERNEL);
+		if (!imxpd->edid) {
+			devm_kfree(dev, imxpd);
+			return -ENOMEM;
+		}
+	}

 	ret =3D of_property_read_string(np, "interface-pix-fmt", &fmt);
 	if (!ret) {
=2D-
2.23.0