tree 88af13216c6c7ae1b7a802e65996f6a0db447a4b
parent 140bc92903287cff4545e358c1651e4b7312cbd3
author Anatolij Gustschin <agust@denx.de> 1239069702 +0000
committer David S. Miller <davem@davemloft.net> 1239659483 -0700

phylib: Allow early-out in phy_change

Marvell 88E1121R Dual PHY device can be hardware-configured
to use shared interrupt pin for both PHY ports. For such
PHY configurations using shared PHY interrupt phy_interrupt()
handler will also schedule a work for PHY port which didn't
cause an interrupt.

This patch adds a possibility for PHY drivers to provide
did_interrupt() function which reports if the PHY (or a PHY
port in a multi-PHY device) generated an interrupt. This
function is called in phy_change() as phy_change() shouldn't
proceed if it is invoked for a PHY which didn't cause an
interrupt. So check for interrupt originator in phy_change()
to allow early-out.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>