tree cf8ebddef2228a4a1571c66faecf00d2eb238d7b
parent 6136c8fe53a8a28906e090ddd8914f9846eb8df8
author Florian Fainelli <f.fainelli@gmail.com> 1486425323 -0800
committer David S. Miller <davem@davemloft.net> 1486493302 -0500

net: dsa: Do not clobber PHY link outside of state machine

Calling phy_read_status() means that we may call into
genphy_read_status() which in turn will use genphy_update_link() which
can make changes to phydev->link outside of the state machine's state
transitions. This is an invalid behavior that is now caught as of
811a919135b9 ("phy state machine: failsafe leave invalid RUNNING state")

Reported-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>