releases/2.6.38.8/fix-_osc-uuid-in-pcc-cpufreq.patch

   1 From 904cc1e637a00dba1b58e7752f485f90ebf2a568 Mon Sep 17 00:00:00 2001
   2 From: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
   3 Date: Tue, 26 Apr 2011 17:05:18 +0000
   4 Subject: [CPUFREQ] Fix _OSC UUID in pcc-cpufreq
   5
   6 From: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
   7
   8 commit 904cc1e637a00dba1b58e7752f485f90ebf2a568 upstream.
   9
  10 UUID needs to be written out the way it is described in
  11 Sec 18.5.124 of ACPI 4.0a Specification.
  12
  13 Platform firmware's use of this UUID/_OSC is optional, which is
  14 why we didn't notice this bug earlier.
  15
  16 Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
  17 Signed-off-by: Dave Jones <davej@redhat.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  19
  20 ---
  21  arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c |    4 ++--
  22  1 file changed, 2 insertions(+), 2 deletions(-)
  23
  24 --- a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
  25 +++ b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
  26 @@ -39,7 +39,7 @@
  27
  28  #include <acpi/processor.h>
  29
  30 -#define PCC_VERSION    "1.00.00"
  31 +#define PCC_VERSION    "1.10.00"
  32  #define POLL_LOOPS     300
  33
  34  #define CMD_COMPLETE   0x1
  35 @@ -102,7 +102,7 @@ static struct acpi_generic_address doorb
  36  static u64 doorbell_preserve;
  37  static u64 doorbell_write;
  38
  39 -static u8 OSC_UUID[16] = {0x63, 0x9B, 0x2C, 0x9F, 0x70, 0x91, 0x49, 0x1f,
  40 +static u8 OSC_UUID[16] = {0x9F, 0x2C, 0x9B, 0x63, 0x91, 0x70, 0x1f, 0x49,
  41                           0xBB, 0x4F, 0xA5, 0x98, 0x2F, 0xA1, 0xB5, 0x46};
  42
  43  struct pcc_cpu {