mirror of https://gitee.com/openkylin/linux.git
db9683fb41
If phy_start_aneg() was called while the phydev is in the PHY_RESUMING state, then its state would immediately transition to PHY_AN (or PHY_FORCING). This meant the phy_state_machine() never processed the PHY_RESUMING state change, which meant interrupts weren't enabled for the PHY. If the PHY used low-power mode (i.e. using BMCR_PDOWN), then the physical link wouldn't get powered up again. There seems no point for phy_start_aneg() to make the PHY_RESUMING --> PHY_AN transition, as the state machine will do this anyway. I'm not sure about the case where autoneg is disabled, as my patch will change behaviour so that the PHY goes to PHY_NOLINK instead of PHY_FORCING. An alternative solution would be to move the phy_config_interrupt() and phy_resume() work out of the state machine and into phy_start(). The background behind this: we're running linux v3.16.7 and from user-space we want to enable the eth port (i.e. do a SIOCSIFFLAGS ioctl with the IFF_UP flag) and immediately afterward set the interface's speed/duplex. Enabling the interface calls .ndo_open() then phy_start() and the PHY transitions PHY_HALTED --> PHY_RESUMING. Setting the speed/duplex ends up calling phy_ethtool_sset(), which calls phy_start_aneg() (meanwhile the phy_state_machine() hasn't processed the PHY_RESUMING state change yet). Signed-off-by: Tim Beale <tim.beale@alliedtelesis.co.nz> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| appletalk | ||
| arcnet | ||
| bonding | ||
| caif | ||
| can | ||
| cris | ||
| dsa | ||
| ethernet | ||
| fddi | ||
| hamradio | ||
| hippi | ||
| hyperv | ||
| ieee802154 | ||
| ipvlan | ||
| irda | ||
| phy | ||
| plip | ||
| ppp | ||
| slip | ||
| team | ||
| usb | ||
| vmxnet3 | ||
| wan | ||
| wimax | ||
| wireless | ||
| xen-netback | ||
| Kconfig | ||
| LICENSE.SRC | ||
| Makefile | ||
| Space.c | ||
| dummy.c | ||
| eql.c | ||
| ifb.c | ||
| loopback.c | ||
| macvlan.c | ||
| macvtap.c | ||
| mdio.c | ||
| mii.c | ||
| netconsole.c | ||
| nlmon.c | ||
| ntb_netdev.c | ||
| rionet.c | ||
| sb1000.c | ||
| sungem_phy.c | ||
| tun.c | ||
| veth.c | ||
| virtio_net.c | ||
| vxlan.c | ||
| xen-netfront.c | ||