[PATCH net] r8169: enforce RX_MULTI_EN on rtl8168ep/8111ep chips
From: Ivan Vecera <ivecera@redhat.com>
Date: 2015-08-04 20:11:48
Subsystem:
8169 10/100/1000 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Heiner Kallweit, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Enforcing this flag in RxConfig for the mentioned chips fixes netdev watchdog issues prepended with AMD IOMMU message(s) like: AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x001d address=0x0000000000003000 flags=0x0050] Note that this flag is also set in Realtek's own driver for these chips. Signed-off-by: Ivan Vecera <ivecera@redhat.com> Tested-by: Alexander Lindqvist <redacted> --- drivers/net/ethernet/realtek/r8169.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 3df51fa..f790f61 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c@@ -4875,10 +4875,12 @@ static void rtl_init_rxcfg(struct rtl8169_private *tp) case RTL_GIGA_MAC_VER_46: case RTL_GIGA_MAC_VER_47: case RTL_GIGA_MAC_VER_48: + RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST | RX_EARLY_OFF); + break; case RTL_GIGA_MAC_VER_49: case RTL_GIGA_MAC_VER_50: case RTL_GIGA_MAC_VER_51: - RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST | RX_EARLY_OFF); + RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST | RX_EARLY_OFF); break; default: RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST);
--
2.4.6