linux-kernel - [PATCH net-next 04/23] {topost} net: hns3: fix endian issue when PF get mbx message flag

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Date:   Thu, 8 Mar 2018 11:06:29 +0800
From:   Peng Li <lipeng321@...wei.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>, <salil.mehta@...wei.com>,
        <lipeng321@...wei.com>
Subject: [PATCH net-next 04/23] {topost} net: hns3: fix endian issue when PF get mbx message flag

This patch fixes the endian issue when PF get mbx message flag.

Signed-off-by: Peng Li <lipeng321@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index 3a2c174..ed34ca3 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -335,11 +335,11 @@ void hclge_mbx_handler(struct hclge_dev *hdev)
 	struct hclge_mbx_vf_to_pf_cmd *req;
 	struct hclge_vport *vport;
 	struct hclge_desc *desc;
-	int ret;
+	int ret, flag;
 
+	flag = le16_to_cpu(crq->desc[crq->next_to_use].flag);
 	/* handle all the mailbox requests in the queue */
-	while (hnae_get_bit(crq->desc[crq->next_to_use].flag,
-			    HCLGE_CMDQ_RX_OUTVLD_B)) {
+	while (hnae_get_bit(flag, HCLGE_CMDQ_RX_OUTVLD_B)) {
 		desc = &crq->desc[crq->next_to_use];
 		req = (struct hclge_mbx_vf_to_pf_cmd *)desc->data;
 
@@ -414,6 +414,7 @@ void hclge_mbx_handler(struct hclge_dev *hdev)
 		}
 		crq->desc[crq->next_to_use].flag = 0;
 		hclge_mbx_ring_ptr_move_crq(crq);
+		flag = le16_to_cpu(crq->desc[crq->next_to_use].flag);
 	}
 
 	/* Write back CMDQ_RQ header pointer, M7 need this pointer */
-- 
2.9.3