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r8169: don't use MSI before RTL8168d 

It was reported that after resuming from suspend network fails with
error "do_IRQ: 3.38 No irq handler for vector", see [0]. Enabling WoL
can work around the issue, but the only actual fix is to disable MSI.
So let's mimic the behavior of the vendor driver and disable MSI on
all chip versions before RTL8168d.

[0] https://bugzilla.kernel.org/show_bug.cgi?id=204079

Fixes: 6c6aa15fde ("r8169: improve interrupt handling")
Reported-by: Dušan Dragić <dragic.dusan@gmail.com>
Tested-by: Dušan Dragić <dragic.dusan@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alistair/sunxi64-5.4-dsi
Heiner Kallweit 2019-07-27 12:43:31 +02:00 committed by David S. Miller
parent 66058b1ca5
commit 003bd5b4a7
1 changed files with 7 additions and 2 deletions
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9
drivers/net/ethernet/realtek/r8169_main.c
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@ -6586,13 +6586,18 @@ static int rtl_alloc_irq(struct rtl8169_private *tp)
{
unsigned int flags;
if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
rtl_unlock_config_regs(tp);
RTL_W8(tp, Config2, RTL_R8(tp, Config2) & ~MSIEnable);
rtl_lock_config_regs(tp);
/* fall through */
case RTL_GIGA_MAC_VER_07 ... RTL_GIGA_MAC_VER_24:
flags = PCI_IRQ_LEGACY;
} else {
break;
default:
flags = PCI_IRQ_ALL_TYPES;
break;
}
return pci_alloc_irq_vectors(tp->pci_dev, 1, 1, flags);