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net: phy: fix too strict check in phy_start_aneg 

When adding checks to detect wrong usage of the phylib API we added
a check to phy_start_aneg() which is too strict. If the phylib
state machine is in state PHY_HALTED we should allow reconfiguring
and restarting aneg, and just don't touch the state.

Fixes: 2b3e88ea65 ("net: phy: improve phy state checking")
Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-01-09 20:34:56 +01:00 committed by David S. Miller
parent 5642e27bf6
commit d9f903f6af
1 changed files with 7 additions and 12 deletions
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19
drivers/net/phy/phy.c
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@ -543,13 +543,6 @@ int phy_start_aneg(struct phy_device *phydev)
mutex_lock(&phydev->lock);
if (!__phy_is_started(phydev)) {
WARN(1, "called from state %s\n",
phy_state_to_str(phydev->state));
err = -EBUSY;
goto out_unlock;
}
if (AUTONEG_DISABLE == phydev->autoneg)
phy_sanitize_settings(phydev);
@ -560,11 +553,13 @@ int phy_start_aneg(struct phy_device *phydev)
if (err < 0)
goto out_unlock;
if (phydev->autoneg == AUTONEG_ENABLE) {
err = phy_check_link_status(phydev);
} else {
phydev->state = PHY_FORCING;
phydev->link_timeout = PHY_FORCE_TIMEOUT;
if (__phy_is_started(phydev)) {
if (phydev->autoneg == AUTONEG_ENABLE) {
err = phy_check_link_status(phydev);
} else {
phydev->state = PHY_FORCING;
phydev->link_timeout = PHY_FORCE_TIMEOUT;
}
}
out_unlock: