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-rw-r--r--arch/x86/kernel/hpet.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index ba6e65884603..ad80a1c718c6 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -34,6 +34,8 @@
*/
unsigned long hpet_address;
u8 hpet_blockid; /* OS timer block num */
+u8 hpet_msi_disable;
+
#ifdef CONFIG_PCI_MSI
static unsigned long hpet_num_timers;
#endif
@@ -596,6 +598,9 @@ static void hpet_msi_capability_lookup(unsigned int start_timer)
unsigned int num_timers_used = 0;
int i;
+ if (hpet_msi_disable)
+ return;
+
if (boot_cpu_has(X86_FEATURE_ARAT))
return;
id = hpet_readl(HPET_ID);
@@ -928,6 +933,9 @@ static __init int hpet_late_init(void)
hpet_reserve_platform_timers(hpet_readl(HPET_ID));
hpet_print_config();
+ if (hpet_msi_disable)
+ return 0;
+
if (boot_cpu_has(X86_FEATURE_ARAT))
return 0;
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