Commit cec8abba authored Jan 26, 2019 by Yonglong Liu Committed by David S. Miller Jan 27, 2019

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>

parent ed29ca8b

drivers/net/ethernet/hisilicon/hns_mdio.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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,*/

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