From f10f383d8414bfe3357e24432ed8a26eeb58ffb8 Mon Sep 17 00:00:00 2001
From: Feng Tang <feng.tang@intel.com>
Date: Thu, 24 Apr 2014 16:18:17 +0800
Subject: [PATCH] x86/hpet: Make boot_hpet_disable extern
Git-commit: f10f383d8414bfe3357e24432ed8a26eeb58ffb8
Patch-mainline: 3.15-rc5
References: bnc#908550,FATE#317933

HPET on some platform has accuracy problem. Making
"boot_hpet_disable" extern so that we can runtime disable
the HPET timer by using quirk to check the platform.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1398327498-13163-1-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 arch/x86/include/asm/hpet.h |    1 +
 arch/x86/kernel/hpet.c      |    2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

--- a/arch/x86/include/asm/hpet.h
+++ b/arch/x86/include/asm/hpet.h
@@ -65,6 +65,7 @@
 /* hpet memory map physical address */
 extern unsigned long hpet_address;
 extern unsigned long force_hpet_address;
+extern int boot_hpet_disable;
 extern u8 hpet_blockid;
 extern int hpet_force_user;
 extern u8 hpet_msi_disable;
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -112,7 +112,7 @@ static inline void hpet_clear_mapping(vo
 /*
  * HPET command line enable / disable
  */
-static int boot_hpet_disable;
+int boot_hpet_disable;
 int hpet_force_user;
 static int hpet_verbose;
 
