diff mbox

[net-next] phy: keep the BCMR_LOOPBACK bit while setup forced mode

Message ID 56F4A6D4.2080908@huawei.com
State Deferred, archived
Delegated to: David Miller
Headers show

Commit Message

wangweidong March 25, 2016, 2:47 a.m. UTC 
When tested the PHY SGMII Loopback,:
1.set the LOOPBACK bit,
2.set the autoneg to AUTONEG_DISABLE, it calls the
genphy_setup_forced which will clear the bit.

So just keep the LOOPBACK bit while setup forced mode.

Signed-off-by: Weidong Wang <wangweidong1@huawei.com>
---
 drivers/net/phy/phy_device.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index e551f3a..8da4b80 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1124,7 +1124,9 @@  static int genphy_config_advert(struct phy_device *phydev)
 int genphy_setup_forced(struct phy_device *phydev)
 {
 	int ctl = 0;
+	int val = phy_read(phydev, MII_BMCR);

+	ctl |= val & BMCR_LOOPBACK;
 	phydev->pause = 0;
 	phydev->asym_pause = 0;