dma-buf: allow reserving more than one shared fence slot

Let's support simultaneous submissions to multiple engines.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Link: https://patchwork.kernel.org/patch/10626149/

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c
index e6ee71323a66..c1c420afe2dd 100644
--- a/drivers/gpu/drm/vgem/vgem_fence.c
+++ b/drivers/gpu/drm/vgem/vgem_fence.c
@@ -180,7 +180,7 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
         reservation_object_lock(resv, NULL);
         if (arg->flags & VGEM_FENCE_WRITE)
                 reservation_object_add_excl_fence(resv, fence);
-        else if ((ret = reservation_object_reserve_shared(resv)) == 0)
+        else if ((ret = reservation_object_reserve_shared(resv, 1)) == 0)
                 reservation_object_add_shared_fence(resv, fence);
         reservation_object_unlock(resv);