• Benjamin Herrenschmidt's avatar
    [SUNGEM]: Make PM of PHYs more reliable (#2) · 40727198
    Benjamin Herrenschmidt authored
    On my latest laptop, I've had occasional PHY dead on wakeup from
    sleep... the PHY would be totally unresponsive even to toggling the hard
    reset line until the machine is powered down... Looking closely at the
    code, I found some possible issues in the way we setup the MDIO lines
    during suspend along with slight divergences from what Darwin does when
    resetting it that may explain the problem. That patch change these and
    the problem appear to be gone for me at least... I also fixed an mdelay
    -> msleep while I was at it to the pmac feature code that is called
    when toggling the PHY reset line since sungem doesn't call it in an
    atomic context anymore.
    
    Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>b
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    40727198
feature.c 79.9 KB