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Koen Kooi
6203cbca5c
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net> Signed-off-by: Denys Dmytriyenko <denys@ti.com>
48 lines
1.8 KiB
Diff
48 lines
1.8 KiB
Diff
From 57961c5a47473e6a6aa03292828484bb2d293f04 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?fran=C3=A7ois=20romieu?= <romieu@fr.zoreil.com>
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Date: Wed, 20 Jun 2012 12:09:18 +0000
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Subject: [PATCH 23/73] r8169: RxConfig hack for the 8168evl.
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commit eb2dc35d99028b698cdedba4f5522bc43e576bd2 upstream.
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The 8168evl (RTL_GIGA_MAC_VER_34) based Gigabyte GA-990FXA motherboards
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are very prone to NETDEV watchdog problems without this change. See
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https://bugzilla.kernel.org/show_bug.cgi?id=42899 for instance.
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I don't know why it *works*. It's depressingly effective though.
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For the record:
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- the problem may go along IOMMU (AMD-Vi) errors but it really looks
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like a red herring.
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- the patch sets the RX_MULTI_EN bit. If the 8168c doc is any guide,
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the chipset now fetches several Rx descriptors at a time.
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- long ago the driver ignored the RX_MULTI_EN bit.
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e542a2269f232d61270ceddd42b73a4348dee2bb changed the RxConfig
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settings. Whatever the problem it's now labeled a regression.
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- Realtek's own driver can identify two different 8168evl devices
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(CFG_METHOD_16 and CFG_METHOD_17) where the r8169 driver only
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sees one. It sucks.
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Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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---
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drivers/net/ethernet/realtek/r8169.c | 1 +
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1 files changed, 1 insertions(+), 0 deletions(-)
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diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
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index 9e61d6b..ed1be8a 100644
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--- a/drivers/net/ethernet/realtek/r8169.c
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+++ b/drivers/net/ethernet/realtek/r8169.c
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@@ -3770,6 +3770,7 @@ static void rtl_init_rxcfg(struct rtl8169_private *tp)
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case RTL_GIGA_MAC_VER_22:
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case RTL_GIGA_MAC_VER_23:
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case RTL_GIGA_MAC_VER_24:
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+ case RTL_GIGA_MAC_VER_34:
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RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST);
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break;
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default:
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--
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1.7.7.6
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