net: hns: Fix wrong read accesses via Clause 45 MDIO protocol

When reading phy registers via Clause 45 MDIO protocol, after write
address operation, the driver use another write address operation, so
can not read the right value of any phy registers. This patch fixes it.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns_mdio.c b/drivers/net/ethernet/hisilicon/hns_mdio.c
index 017e08452d8c0b2ae9b1117e182b099aa36c0447..baf5cc251f3299499f3fc03ee17513aa740110f6 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns_mdio.c
+++ b/drivers/net/ethernet/hisilicon/hns_mdio.c
@@ -321,7 +321,7 @@ static int hns_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
                }
 
                hns_mdio_cmd_write(mdio_dev, is_c45,
-                                  MDIO_C45_WRITE_ADDR, phy_id, devad);
+                                  MDIO_C45_READ, phy_id, devad);
        }
 
        /* Step 5: waitting for MDIO_COMMAND_REG 's mdio_start==0,*/