Re: [PATCH net-next] phy: make some bits preserved while setup forced mode

From: Weidong Wang Date: Thu, 14 Apr 2016 15:43:52 +0800 > 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. > > The BMCR_LOOPBACK bit should be preserved. >

[PATCH net-next] phy: make some bits preserved while setup forced mode

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. The BMCR_LOOPBACK bit should be preserved. As Florian pointed out that other bits should be preserved too. So I make the BMCR_ISOLATE and