[PATCH 04/23] RDMA: use dma_resv_wait() instead of extracting the fence

[Christian König]

Use dma_resv_wait() instead of extracting the exclusive fence and
waiting on it manually.

Signed-off-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Jason Gunthorpe <jgg at ziepe.ca>
Cc: Leon Romanovsky <leon at kernel.org>
Cc: Maor Gottlieb <maorg at nvidia.com>
Cc: Gal Pressman <galpress at amazon.com>
Cc: linux-media at vger.kernel.org
Cc: linaro-mm-sig at lists.linaro.org
---
 drivers/infiniband/core/umem_dmabuf.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/infiniband/core/umem_dmabuf.c b/drivers/infiniband/core/umem_dmabuf.c
index f0760741f281..d32cd7538835 100644
--- a/drivers/infiniband/core/umem_dmabuf.c
+++ b/drivers/infiniband/core/umem_dmabuf.c
@@ -16,7 +16,6 @@ int ib_umem_dmabuf_map_pages(struct ib_umem_dmabuf *umem_dmabuf)
 {
 	struct sg_table *sgt;
 	struct scatterlist *sg;
-	struct dma_fence *fence;
 	unsigned long start, end, cur = 0;
 	unsigned int nmap = 0;
 	int i;
@@ -68,11 +67,8 @@ int ib_umem_dmabuf_map_pages(struct ib_umem_dmabuf *umem_dmabuf)
 	 * may be not up-to-date. Wait for the exporter to finish
 	 * the migration.
 	 */
-	fence = dma_resv_excl_fence(umem_dmabuf->attach->dmabuf->resv);
-	if (fence)
-		return dma_fence_wait(fence, false);
-
-	return 0;
+	return dma_resv_wait_timeout(umem_dmabuf->attach->dmabuf->resv, false,
+				     false, MAX_SCHEDULE_TIMEOUT);
 }
 EXPORT_SYMBOL(ib_umem_dmabuf_map_pages);
 
-- 
2.25.1