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authorFeng Tang <feng.tang@intel.com>2014-04-24 16:18:17 +0800
committerIngo Molnar <mingo@kernel.org>2014-05-08 08:15:34 +0200
commitf10f383d8414bfe3357e24432ed8a26eeb58ffb8 (patch)
treeaf391ff8b685c0086edfcad723f7061ce0a6cd55
parent14262d67fe348018af368a07430fbc06eadeabb1 (diff)
x86/hpet: Make boot_hpet_disable extern
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>
-rw-r--r--arch/x86/include/asm/hpet.h1
-rw-r--r--arch/x86/kernel/hpet.c2
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/hpet.h b/arch/x86/include/asm/hpet.h
index b18df579c0e..36f7125945e 100644
--- a/arch/x86/include/asm/hpet.h
+++ b/arch/x86/include/asm/hpet.h
@@ -63,6 +63,7 @@
/* 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;
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 8d80ae01160..4177bfbc80b 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -88,7 +88,7 @@ static inline void hpet_clear_mapping(void)
/*
* HPET command line enable / disable
*/
-static int boot_hpet_disable;
+int boot_hpet_disable;
int hpet_force_user;
static int hpet_verbose;