linux-kernel - [PATCH 089/173] x86, quirk: Fix SB600 revision check

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Date:	Mon, 25 Apr 2011 22:04:01 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org
Cc:	Andreas Herrmann <andreas.herrmann3@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 089/173] x86, quirk: Fix SB600 revision check

2.6.27.59-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Andreas Herrmann <andreas.herrmann3@....com>

commit 1d3e09a304e6c4e004ca06356578b171e8735d3c upstream.

Commit 7f74f8f28a2bd9db9404f7d364e2097a0c42cc12
(x86 quirk: Fix polarity for IRQ0 pin2 override on SB800
systems) introduced a regression. It removed some SB600 specific
code to determine the revision ID without adapting a
corresponding revision ID check for SB600.

See this mail thread:

  http://marc.info/?l=linux-kernel&m=129980296006380&w=2

This patch adapts the corresponding check to cover all SB600
revisions.

Tested-by: Wang Lei <f3d27b@...il.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@....com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
LKML-Reference: <20110315143137.GD29499@...erich.amd.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/x86/kernel/early-quirks.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Index: longterm-2.6.27/arch/x86/kernel/early-quirks.c
===================================================================
--- longterm-2.6.27.orig/arch/x86/kernel/early-quirks.c	2011-01-23 10:52:13.000000000 +0100
+++ longterm-2.6.27/arch/x86/kernel/early-quirks.c	2011-04-25 15:45:17.351278162 +0200
@@ -163,7 +163,12 @@
 		return;
 
 	rev = ati_sbx00_rev(num, slot, func);
-	if (rev > 0x13)
+	/*
+	 * SB600: revisions 0x11, 0x12, 0x13, 0x14, ...
+	 * SB700: revisions 0x39, 0x3a, ...
+	 * SB800: revisions 0x40, 0x41, ...
+	 */
+	if (rev >= 0x39)
 		return;
 
 	/* check for IRQ0 interrupt swap */


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