[lkml]   [2011]   [Jun]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
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 <>

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 <>
Signed-off-by: Dave Jones <>
Signed-off-by: Greg Kroah-Hartman <>

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 {

 \ /
  Last update: 2011-06-01 11:13    [W:0.453 / U:1.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site