From 79bfcdd26c0e8eba451b950d23a926713e0281bb Mon Sep 17 00:00:00 2001
From: Hu Kejun <william.hu@rock-chips.com>
Date: Fri, 18 Mar 2022 16:02:14 +0800
Subject: [PATCH] media: i2c: ov50c40: fix cannot get channel info on android

Signed-off-by: Hu Kejun <william.hu@rock-chips.com>
Change-Id: I60a02c71bd2bd8970a608d5fffdca74801ca8efc
---
 drivers/media/i2c/ov50c40.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/i2c/ov50c40.c b/drivers/media/i2c/ov50c40.c
index e5dce2a0fcdf..8bfc5492bcd0 100644
--- a/drivers/media/i2c/ov50c40.c
+++ b/drivers/media/i2c/ov50c40.c
@@ -6429,6 +6429,12 @@ static long ov50c40_compat_ioctl32(struct v4l2_subdev *sd,
 			return ret;
 		}
 
+		ret = copy_from_user(ch_info, up, sizeof(*ch_info));
+		if (ret) {
+			ret = -EFAULT;
+			return ret;
+		}
+
 		ret = ov50c40_ioctl(sd, cmd, ch_info);
 		if (!ret) {
 			ret = copy_to_user(up, ch_info, sizeof(*ch_info));