[PATCH v2] media: v4l2-compat-ioctl32: fix missing length copy in put_v4l2_buffer32

[Tiffany Lin]

In v4l2-compliance utility, test QUERYBUF required correct length
value to go through each planar to check planar's length in
multi-planar buffer type

Change-Id: I98faddc5711c24f17beda52e6d18c657add251ac
Signed-off-by: Tiffany Lin <tiffany.lin at mediatek.com>
---
 drivers/media/v4l2-core/v4l2-compat-ioctl32.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 327e83a..6c01920 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -516,6 +516,9 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
 		put_user(kp->reserved, &up->reserved))
 			return -EFAULT;
 
+	if (put_user(kp->length, &up->length))
+		return -EFAULT;
+
 	if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
 		num_planes = kp->length;
 		if (num_planes == 0)
-- 
1.7.9.5