Paul Menzel <pm.deb...@googlemail.com> :
[forget runtime PM]
> [18764.958557] r8169 0000:02:00.0: PME# disabled
> [18781.998004] r8169 0000:02:00.0: eth0: link down
^^
> [18781.998024] r8169 0000:02:00.0: eth0: link down
^^
Two link events within 20 us. /me wonders...
The datasheet states "[the PHYStatus] register is updated continuously at
maximum periods of 300us." but it is far from clear that the coherency
with the interrupt status register can be taken for granted. Hayes ?
Paul, can you try the hack below ?
diff --git a/drivers/net/ethernet/realtek/r8169.c
b/drivers/net/ethernet/realtek/r8169.c
index 7a0c800..6daca05 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1278,6 +1278,7 @@ static void __rtl8169_check_link_status(struct net_device
*dev,
{
unsigned long flags;
+ udelay(500);
spin_lock_irqsave(&tp->lock, flags);
if (tp->link_ok(ioaddr)) {
rtl_link_chg_patch(tp);
--
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