Am 28.11.2016 um 13:20 schrieb Nicolai Hähnle:
> From: Nicolai Hähnle <Nicolai.Haehnle at amd.com>
>
> Cc: Peter Zijlstra <peterz at infradead.org>
> Cc: Ingo Molnar <mingo at redhat.com>
> Cc: Maarten Lankhorst <dev at mblankhorst.nl>
> Cc: Daniel Vetter <daniel at ffwll.ch>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: dri-devel at lists.freedesktop.org
> Signed-off-by: Nicolai Hähnle <Nicolai.Haehnle at amd.com>
> ---
> drivers/gpu/drm/vgem/vgem_fence.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/vgem/vgem_fence.c
> b/drivers/gpu/drm/vgem/vgem_fence.c
> index 488909a..e1d516f 100644
> --- a/drivers/gpu/drm/vgem/vgem_fence.c
> +++ b/drivers/gpu/drm/vgem/vgem_fence.c
> @@ -191,12 +191,12 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
>
> /* Expose the fence via the dma-buf */
> ret = 0;
> - mutex_lock(&resv->lock.base);
> + ww_mutex_lock(&resv->lock.base, NULL);
Accessing the base member here is probably superfluous now and will most
likely raise a warning.
Christian.
> if (arg->flags & VGEM_FENCE_WRITE)
> reservation_object_add_excl_fence(resv, fence);
> else if ((ret = reservation_object_reserve_shared(resv)) == 0)
> reservation_object_add_shared_fence(resv, fence);
> - mutex_unlock(&resv->lock.base);
> + ww_mutex_unlock(&resv->lock.base);
>
> /* Record the fence in our idr for later signaling */
> if (ret == 0) {
