[PATCH v6 08/22] drm/virtio: Unlock reservations on dma_resv_reserve_fences() error

[Thomas Hellström (Intel)]

On 5/27/22 01:50, Dmitry Osipenko wrote:
> Unlock reservations on dma_resv_reserve_fences() error to fix recursive
> locking of the reservations when this error happens.
Fixes:
> Cc: stable at vger.kernel.org

With that fixed,

Reviewed-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>


> Signed-off-by: Dmitry Osipenko <dmitry.osipenko at collabora.com>
> ---
>   drivers/gpu/drm/virtio/virtgpu_gem.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c
> index 580a78809836..7db48d17ee3a 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_gem.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
> @@ -228,8 +228,10 @@ int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs)
>   
>   	for (i = 0; i < objs->nents; ++i) {
>   		ret = dma_resv_reserve_fences(objs->objs[i]->resv, 1);
> -		if (ret)
> +		if (ret) {
> +			virtio_gpu_array_unlock_resv(objs);
>   			return ret;
> +		}
>   	}
>   	return ret;
>   }