media: Revert "media: videobuf2: Fix length check for single plane dmabuf queueing"

commit 95e9295daa849095d8be05fb6e26b2ba9be1594f upstream.

The updated length check for dmabuf types broke existing usage in v4l2
userland clients.

Fixes: 961d3b27 ("media: videobuf2: Fix length check for single plane dmabuf queueing")
Cc: stable@vger.kernel.org
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 96d3b2b..3f61f58 100644 (file)
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -118,8 +118,7 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b)
                                return -EINVAL;
                }
        } else {
-               length = (b->memory == VB2_MEMORY_USERPTR ||
-                         b->memory == VB2_MEMORY_DMABUF)
+               length = (b->memory == VB2_MEMORY_USERPTR)
                        ? b->length : vb->planes[0].length;
 
                if (b->bytesused > length)