[003/146] [CPUFREQ] Fix _OSC UUID in pcc-cpufreq

Greg KH
2011-06-01T08:06:33Z

From: Naga Chumbalkar <nagananda.chumbalkar@hp.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@hp.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.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 {