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-rw-r--r--arch/x86/kernel/hpet.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 53303f2e5475..4a86ffd67ec5 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -446,6 +446,20 @@ static __init int hpet_late_init(void)
}
fs_initcall(hpet_late_init);
+void hpet_disable(void)
+{
+ if (is_hpet_capable()) {
+ unsigned long cfg = hpet_readl(HPET_CFG);
+
+ if (hpet_legacy_int_enabled) {
+ cfg &= ~HPET_CFG_LEGACY;
+ hpet_legacy_int_enabled = 0;
+ }
+ cfg &= ~HPET_CFG_ENABLE;
+ hpet_writel(cfg, HPET_CFG);
+ }
+}
+
#ifdef CONFIG_HPET_EMULATE_RTC
/* HPET in LegacyReplacement Mode eats up RTC interrupt line. When, HPET

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