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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Daniel Mack <daniel@zonque.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 47/88] video: fbdev: pxafb: clear allocated
 memory for video modes
Thread-Topic: [PATCH AUTOSEL 4.18 47/88] video: fbdev: pxafb: clear allocated
 memory for video modes
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Date:   Fri, 7 Sep 2018 00:36:27 +0000
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From: Daniel Mack <daniel@zonque.org>

[ Upstream commit b951d80aaf224b1f774e10def672f5e37488e4ee ]

When parsing the video modes from DT properties, make sure to zero out
memory before using it. This is important because not all fields in the mod=
e
struct are explicitly initialized, even though they are used later on.

Fixes: 420a488278e86 ("video: fbdev: pxafb: initial devicetree conversion")
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/video/fbdev/pxafb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c
index 76722a59f55e..dfe382e68287 100644
--- a/drivers/video/fbdev/pxafb.c
+++ b/drivers/video/fbdev/pxafb.c
@@ -2128,8 +2128,8 @@ static int of_get_pxafb_display(struct device *dev, s=
truct device_node *disp,
 		return -EINVAL;
=20
 	ret =3D -ENOMEM;
-	info->modes =3D kmalloc_array(timings->num_timings,
-				    sizeof(info->modes[0]), GFP_KERNEL);
+	info->modes =3D kcalloc(timings->num_timings, sizeof(info->modes[0]),
+			      GFP_KERNEL);
 	if (!info->modes)
 		goto out;
 	info->num_modes =3D timings->num_timings;
--=20
2.17.1