Avoid log spam caused by trying to read counters from the chip whilst it is in a PCI power-save state.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=107421 Fixes: 1ef7286e7f36 ("r8169: Dereference MMIO address immediately before use") Signed-off-by: Heiner Kallweit <hkallwe...@gmail.com> --- drivers/net/ethernet/realtek/r8169.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index c6b98024b..8265c1824 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -1682,11 +1682,13 @@ static bool rtl8169_reset_counters(struct rtl8169_private *tp) static bool rtl8169_update_counters(struct rtl8169_private *tp) { + u8 val = RTL_R8(tp, ChipCmd); + /* * Some chips are unable to dump tally counters when the receiver - * is disabled. + * is disabled. If 0xff chip may be in a PCI power-save state. */ - if ((RTL_R8(tp, ChipCmd) & CmdRxEnb) == 0) + if (!(val & CmdRxEnb) || val == 0xff) return true; return rtl8169_do_counters(tp, CounterDump); -- 2.20.1
