From: "Wei Hu(Xavier)" <xavier.huwei@huawei.com>
Date: Wed, 30 Aug 2017 17:23:17 +0800
Subject: RDMA/hns: Replace condition statement using hardware version
 information
Patch-mainline: v4.15-rc1
Git-commit: 5caad67cb337a81ae6f579a04372865a4dfc0065
References: bsc#1104427 FATE#326416

This patch replaces condition statement to reduce usage of hardware version
information in common driver.

Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/hns/hns_roce_main.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -381,7 +381,8 @@ static int hns_roce_mmap(struct ib_ucont
 				       to_hr_ucontext(context)->uar.pfn,
 				       PAGE_SIZE, vma->vm_page_prot))
 			return -EAGAIN;
-	} else if (vma->vm_pgoff == 1 && hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
+	} else if (vma->vm_pgoff == 1 && hr_dev->tptr_dma_addr &&
+		   hr_dev->tptr_size) {
 		/* vm_pgoff: 1 -- TPTR */
 		if (io_remap_pfn_range(vma, vma->vm_start,
 				       hr_dev->tptr_dma_addr >> PAGE_SHIFT,