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Commit f48256ef authored by wangweidong's avatar wangweidong Committed by David S. Miller
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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 BMCR_PDOWN as well.

Signed-off-by: default avatarWeidong Wang <wangweidong1@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4e811b1e
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