linux-kernel - [PATCH 4.19 215/239] RDMA/hns: Modify the mapping attribute of doorbell to device

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Date:   Mon, 24 Jan 2022 19:44:13 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Yixing Liu <liuyixing1@...wei.com>,
        Wenpeng Liang <liangwenpeng@...wei.com>,
        Jason Gunthorpe <jgg@...dia.com>
Subject: [PATCH 4.19 215/239] RDMA/hns: Modify the mapping attribute of doorbell to device

From: Yixing Liu <liuyixing1@...wei.com>

commit 39d5534b1302189c809e90641ffae8cbdc42a8fc upstream.

It is more general for ARM device drivers to use the device attribute to
map PCI BAR spaces.

Fixes: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver")
Link: https://lore.kernel.org/r/20211206133652.27476-1-liangwenpeng@huawei.com
Signed-off-by: Yixing Liu <liuyixing1@...wei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@...wei.com>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/infiniband/hw/hns/hns_roce_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -432,7 +432,7 @@ static int hns_roce_mmap(struct ib_ucont
 		return -EINVAL;
 
 	if (vma->vm_pgoff == 0) {
-		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+		vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
 		if (io_remap_pfn_range(vma, vma->vm_start,
 				       to_hr_ucontext(context)->uar.pfn,
 				       PAGE_SIZE, vma->vm_page_prot))