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authorStefano Stabellini <stefano.stabellini@eu.citrix.com>2010-07-21 18:32:37 +0100
committerThomas Gleixner <tglx@linutronix.de>2010-07-23 12:53:00 +0200
commitff4878089e1eaeac79d57878ad4ea32910fb4037 (patch)
tree0e2f78629117a2ca1eff77c673ce364bb4cc32a6 /arch
parent087b255a2b43f417af83cb44e0bb02507f36b7fe (diff)
downloadlinux-2.6.34-ux500-ff4878089e1eaeac79d57878ad4ea32910fb4037.tar.gz
x86: Do not try to disable hpet if it hasn't been initialized before
hpet_disable is called unconditionally on machine reboot if hpet support is compiled in the kernel. hpet_disable only checks if the machine is hpet capable but doesn't make sure that hpet has been initialized. [ tglx: Made it a one liner and removed the redundant hpet_address check ] Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Venkatesh Pallipadi <venki@google.com> LKML-Reference: <alpine.DEB.2.00.1007211726240.22235@kaball-desktop> Cc: stable@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/hpet.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index a198b7c87a1..ba390d73117 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -964,7 +964,7 @@ fs_initcall(hpet_late_init);
void hpet_disable(void)
{
- if (is_hpet_capable()) {
+ if (is_hpet_capable() && hpet_virt_address) {
unsigned int cfg = hpet_readl(HPET_CFG);
if (hpet_legacy_int_enabled) {