linux-kernel - [PATCH] olpc: fix model detection without OFW

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Message-ID: <m3mycpye65.fsf@pullcord.laptop.org>
Date:	Fri, 13 Feb 2009 20:56:18 -0500
From:	Chris Ball <cjb@...top.org>
To:	Harvey Harrison <harvey.harrison@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andres Salomon <dilinger@...ued.net>
Subject: [PATCH] olpc: fix model detection without OFW

Harvey's endianness patch (e51a1ac2dfca9ad869471e88f828281db7e810c0)
breaks model comparison on OLPC; the value 0xc2 needs to be scaled
up by olpc_board().  The pre-patch version was wrong, but accidentally
worked anyway (big-endian 0xc2 is big enough to satisfy all other
board revisions, but little endian 0xc2 is not).

Signed-off-by: Chris Ball <cjb@...top.org>
---
 arch/x86/kernel/olpc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/olpc.c b/arch/x86/kernel/olpc.c
index 7a13fac..4006c52 100644
--- a/arch/x86/kernel/olpc.c
+++ b/arch/x86/kernel/olpc.c
@@ -203,7 +203,7 @@ static void __init platform_detect(void)
 static void __init platform_detect(void)
 {
 	/* stopgap until OFW support is added to the kernel */
-	olpc_platform_info.boardrev = 0xc2;
+	olpc_platform_info.boardrev = olpc_board(0xc2);
 }
 #endif
 
-- 
1.6.1.3
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