On 7/24/24 19:09, Dan Carpenter wrote:
> This function accidentally returns zero/success on the failure path.
> It leads to locking issues and an uninitialized *map_copy in the
> caller.
>
> Fixes: b4b0193e83cb ("drm/fbdev-generic: Fix locking with drm_client_buffer_vmap_local()")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_client.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c
> index 2803ac111bbd..bfedcbf516db 100644
> --- a/drivers/gpu/drm/drm_client.c
> +++ b/drivers/gpu/drm/drm_client.c
> @@ -355,7 +355,7 @@ int drm_client_buffer_vmap_local(struct drm_client_buffer *buffer,
>
> err_drm_gem_vmap_unlocked:
> drm_gem_unlock(gem);
> - return 0;
> + return ret;
> }
> EXPORT_SYMBOL(drm_client_buffer_vmap_local);
>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
--
Best regards,
Dmitry
