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From:   Haoyue Xu <xuhaoyue1@hisilicon.com>
To:     <jgg@nvidia.com>, <leon@kernel.org>
CC:     <linux-rdma@vger.kernel.org>, <linuxarm@huawei.com>,
        <linux-kernel@vger.kernel.org>, <xuhaoyue1@hisilicon.com>
Subject: [PATCH for-next 4/6] RDMA/hns: Fix page size cap from firmwall
Date:   Sat, 26 Nov 2022 18:29:09 +0800
Message-ID: <20221126102911.2921820-5-xuhaoyue1@hisilicon.com>
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From: Chengchang Tang <tangchengchang@huawei.com>

Add verification to make sure the roce page size cap is supported by the
system page size.

Fixes: ba6bb7e97421 ("RDMA/hns: Add interfaces to get pf capabilities from firmware")
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 41835cb05983..6e74735bbcf8 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -2345,6 +2345,9 @@ static int hns_roce_query_pf_caps(struct hns_roce_dev *hr_dev)
 	caps->wqe_sge_hop_num = hr_reg_read(resp_d, PF_CAPS_D_EX_SGE_HOP_NUM);
 	caps->wqe_rq_hop_num = hr_reg_read(resp_d, PF_CAPS_D_RQWQE_HOP_NUM);
 
+	if (!(caps->page_size_cap & PAGE_SIZE))
+		caps->page_size_cap = HNS_ROCE_V2_PAGE_SIZE_SUPPORTED;
+
 	return 0;
 }
 
-- 
2.30.0