Hi
Am 13.11.20 um 11:15 schrieb Dan Carpenter:
> 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.carpen...@oracle.com>
Reviewed-by: Thomas Zimmermann <tzimmerm...@suse.de>
Thanks for the patch. As it has a Fixes tag, it's probably worth taking
for silencing compiler warnings alone. I'll add it to the tree.
In practice, it doesn't really matter. udl_handle_damage() is running
during the DRM commit phase and it's too late to handle errors. We could
as well convert the the function to void.
Best regards
Thomas
> ---
> 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 42eeba1dfdbf..9d34ec9d03f6 100644
> --- a/drivers/gpu/drm/udl/udl_modeset.c
> +++ b/drivers/gpu/drm/udl/udl_modeset.c
> @@ -305,8 +305,10 @@ static int udl_handle_damage(struct drm_framebuffer *fb,
> int x, int y,
> vaddr = map.vaddr; /* TODO: Use mapping abstraction properly */
>
> 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++) {
>
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer
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