[RFC PATCH 1/3] RDMA/umem: Change for rdma devices has not dma device

[Shunsuke Mie]

To share memory space using dma-buf, a API of the dma-buf requires dma
device, but devices such as rxe do not have a dma device. For those case,
change to specify a device of struct ib instead of the dma device.

Signed-off-by: Shunsuke Mie <mie@xxxxxxxxxx>
---
 drivers/infiniband/core/umem_dmabuf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/umem_dmabuf.c b/drivers/infiniband/core/umem_dmabuf.c
index c6e875619fac..58d6ac9cb51a 100644
--- a/drivers/infiniband/core/umem_dmabuf.c
+++ b/drivers/infiniband/core/umem_dmabuf.c
@@ -146,7 +146,7 @@ struct ib_umem_dmabuf *ib_umem_dmabuf_get(struct ib_device *device,
 
 	umem_dmabuf->attach = dma_buf_dynamic_attach(
 					dmabuf,
-					device->dma_device,
+					device->dma_device ? device->dma_device : &device->dev,
 					ops,
 					umem_dmabuf);
 	if (IS_ERR(umem_dmabuf->attach)) {
-- 
2.17.1