4.18-stable review patch. If anyone has any objections, please let me know.
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From: "Maciej S. Szmigiero" mail@maciej.szmigiero.name
[ Upstream commit 511cfd580f23b0e0fcd5659931ef14c6e2c062b0 ]
It has been reported that since commit 05212ba8132b42 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices") at least RTL_GIGA_MAC_VER_38 NICs work erratically after a resume from suspend. The problem has been traced to a missing RX_MULTI_EN bit in the RxConfig register. We already set this bit for RTL_GIGA_MAC_VER_35 NICs of the same 8168F chip family so let's do it also for its other siblings: RTL_GIGA_MAC_VER_36 and RTL_GIGA_MAC_VER_38.
Curiously, the NIC seems to work fine after a system boot without having this bit set as long as the system isn't suspended and resumed.
Fixes: 05212ba8132b42 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices") Reported-by: Chris Clayton chris2553@googlemail.com Signed-off-by: Maciej S. Szmigiero mail@maciej.szmigiero.name Reviewed-by: Heiner Kallweit hkallweit1@gmail.com Tested-by: Chris Clayton chris2553@googlemail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/realtek/r8169.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -4788,8 +4788,8 @@ static void rtl_init_rxcfg(struct rtl816 RTL_W32(tp, RxConfig, RX_FIFO_THRESH | RX_DMA_BURST); break; case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_24: - case RTL_GIGA_MAC_VER_34: - case RTL_GIGA_MAC_VER_35: + case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_36: + case RTL_GIGA_MAC_VER_38: RTL_W32(tp, RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST); break; case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51: