shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 10:31:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
[ Upstream commit cec8abba13 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yonglong Liu
2019-01-26 17:18:27 +08:00
committed by Greg Kroah-Hartman
parent a60323e6b9
commit 04731b3c70
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/hisilicon/hns_mdio.c
View File

@@ -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,*/