RDMA/hns: Fix wrong maximum DMA segment size

[ Upstream commit 9beb2c9 ]

Set maximum DMA segment size to 2G instead of UINT_MAX due to HW limit.

Fixes: e0477b3 ("RDMA: Explicitly pass in the dma_device to ib_register_device")
Link: https://patch.msgid.link/r/[email protected]
Signed-off-by: Chengchang Tang <[email protected]>
Signed-off-by: Junxian Huang <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: Chengchang Tang

drivers/infiniband/hw/hns/hns_roce_main.c

@@ -763,7 +763,7 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 		if (ret)
 			return ret;
 	}
-	dma_set_max_seg_size(dev, UINT_MAX);
+	dma_set_max_seg_size(dev, SZ_2G);
 	ret = ib_register_device(ib_dev, "hns_%d", dev);
 	if (ret) {
 		dev_err(dev, "ib_register_device failed!\n");