linux-kernel - [005/165] [CPUFREQ] Fix

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Date:	Wed, 01 Jun 2011 17:09:35 +0900
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Naga Chumbalkar <nagananda.chumbalkar@...com>,
	Dave Jones <davej@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [005/165] [CPUFREQ] Fix _OSC UUID in pcc-cpufreq

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

------------------
Content-Length: 1193
Lines: 39

From: Naga Chumbalkar <nagananda.chumbalkar@...com>

commit 904cc1e637a00dba1b58e7752f485f90ebf2a568 upstream.

UUID needs to be written out the way it is described in
Sec 18.5.124 of ACPI 4.0a Specification.

Platform firmware's use of this UUID/_OSC is optional, which is
why we didn't notice this bug earlier.

Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@...com>
Signed-off-by: Dave Jones <davej@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
@@ -39,7 +39,7 @@
 
 #include <acpi/processor.h>
 
-#define PCC_VERSION 	"1.00.00"
+#define PCC_VERSION	"1.10.00"
 #define POLL_LOOPS 	300
 
 #define CMD_COMPLETE 	0x1
@@ -102,7 +102,7 @@ static struct acpi_generic_address doorb
 static u64 doorbell_preserve;
 static u64 doorbell_write;
 
-static u8 OSC_UUID[16] = {0x63, 0x9B, 0x2C, 0x9F, 0x70, 0x91, 0x49, 0x1f,
+static u8 OSC_UUID[16] = {0x9F, 0x2C, 0x9B, 0x63, 0x91, 0x70, 0x1f, 0x49,
 			  0xBB, 0x4F, 0xA5, 0x98, 0x2F, 0xA1, 0xB5, 0x46};
 
 struct pcc_cpu {


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