From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit a7319c8f50c5e93a12997e2d0821a2f7946fb734 ]
If udl_get_urb() fails then this should return a negative error code but currently it returns success.
Fixes: 798ce3fe1c3a ("drm/udl: Begin/end access to imported buffers in damage-handler") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Link: https://patchwork.freedesktop.org/patch/msgid/20201113101502.GD168908@mwanda Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/udl/udl_modeset.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c index fef43f4e3bac4..edcfd8c120c44 100644 --- a/drivers/gpu/drm/udl/udl_modeset.c +++ b/drivers/gpu/drm/udl/udl_modeset.c @@ -303,8 +303,10 @@ static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y, }
urb = udl_get_urb(dev); - if (!urb) + if (!urb) { + ret = -ENOMEM; goto out_drm_gem_shmem_vunmap; + } cmd = urb->transfer_buffer;
for (i = clip.y1; i < clip.y2; i++) {