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Commit 904cc1e6 authored by Naga Chumbalkar's avatar Naga Chumbalkar Committed by Dave Jones
Browse files

[CPUFREQ] Fix _OSC UUID in pcc-cpufreq 



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: default avatarNaga Chumbalkar <nagananda.chumbalkar@hp.com>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
Cc: stable@kernel.org
parent 5dd12af0

arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c

+2 −2
Original line number Diff line number Diff line
@@ -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 doorbell; 
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 {