From: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Date: Mon, 23 Feb 2009 15:12:58 +0000 (-0300)
Subject: V4L/DVB (10668): ov772x: bit mask operation fix on ov772x_mask_set.
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=66b46e68a52114e7065f0bfd0016276ae5925e70;p=openwrt%2Fstaging%2Fblogic.git

V4L/DVB (10668): ov772x: bit mask operation fix on ov772x_mask_set.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/ov772x.c b/drivers/media/video/ov772x.c
index 702e61a9c02b..6b18da7c3c0a 100644
--- a/drivers/media/video/ov772x.c
+++ b/drivers/media/video/ov772x.c
@@ -565,8 +565,11 @@ static int ov772x_mask_set(struct i2c_client *client,
 					  u8  set)
 {
 	s32 val = i2c_smbus_read_byte_data(client, command);
+	if (val < 0)
+		return val;
+
 	val &= ~mask;
-	val |=  set;
+	val |= set & mask;
 
 	return i2c_smbus_write_byte_data(client, command, val);
 }