diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 786aa227afdfbc1ac7e676ae750a9185cdc086fa..a3c56c9b8a025b1625889b7bce3d655f85c7f848 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -117,7 +117,8 @@ int is_hpet_enabled(void)
 static void hpet_reserve_platform_timers(unsigned long id)
 {
 	struct hpet __iomem *hpet = hpet_virt_address;
-	unsigned int nrtimers;
+	struct hpet_timer __iomem *timer = &hpet->hpet_timers[2];
+	unsigned int nrtimers, i;
 	struct hpet_data hd;
 
 	nrtimers = ((id & HPET_ID_NUMBER) >> HPET_ID_NUMBER_SHIFT) + 1;
@@ -135,10 +136,9 @@ static void hpet_reserve_platform_timers(unsigned long id)
 	hd.hd_irq[0] = HPET_LEGACY_8254;
 	hd.hd_irq[1] = HPET_LEGACY_RTC;
 
-	/*
-	 * IRQs for the other timers are assigned dynamically
-	 * in hpet_alloc
-	 */
+       for (i = 2; i < nrtimers; timer++, i++)
+	       hd.hd_irq[i] = (timer->hpet_config & Tn_INT_ROUTE_CNF_MASK) >>
+		       Tn_INT_ROUTE_CNF_SHIFT;
 	hpet_alloc(&hd);
 }
 #else
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 593b32cfbc338530904859af5fff37c994ca03bb..22f5fd02ea87844f4ef0bbd6b59f1688aa6cdf02 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -852,6 +852,12 @@ int hpet_alloc(struct hpet_data *hdp)
 
 		timer = &hpet->hpet_timers[devp - hpetp->hp_dev];
 
+		/* Check if there's already an IRQ assigned to the timer */
+		if (hdp->hd_irq[i]) {
+			hpetp->hp_dev[i].hd_hdwirq = hdp->hd_irq[i];
+			continue;
+		}
+
 		hpet_config = readq(&timer->hpet_config);
 		irq_bitmap = (hpet_config & Tn_INT_ROUTE_CAP_MASK)
 			>> Tn_INT_ROUTE_CAP_SHIFT;