From ff4878089e1eaeac79d57878ad4ea32910fb4037 Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Wed, 21 Jul 2010 18:32:37 +0100 Subject: [PATCH] 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 Acked-by: Venkatesh Pallipadi LKML-Reference: Cc: stable@kernel.org Signed-off-by: Thomas Gleixner --- arch/x86/kernel/hpet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index a198b7c87a12..ba390d731175 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) {