linux-kernel - [PATCH 2/2] arch/i386/kernel/time_hpet.c: ioremap balanced with iounmap

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Message-Id: <1161059571.20400.27.camel@amol.verismonetworks.com>
Date:	Tue, 17 Oct 2006 10:02:51 +0530
From:	Amol Lad <amol@...ismonetworks.com>
To:	venkatesh.pallipadi@...el.com
Cc:	linux kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] arch/i386/kernel/time_hpet.c: ioremap balanced with
	iounmap

Signed-off-by: Amol Lad <amol@...ismonetworks.com>
---
diff -uprN -X linux-2.6.19-rc1-orig/Documentation/dontdiff linux-2.6.19-rc1-orig/arch/i386/kernel/time_hpet.c linux-2.6.19-rc1/arch/i386/kernel/time_hpet.c
--- linux-2.6.19-rc1-orig/arch/i386/kernel/time_hpet.c	2006-10-05 14:00:38.000000000 +0530
+++ linux-2.6.19-rc1/arch/i386/kernel/time_hpet.c	2006-10-05 18:30:07.000000000 +0530
@@ -132,14 +132,20 @@ int __init hpet_enable(void)
 	 * the single HPET timer for system time.
 	 */
 #ifdef CONFIG_HPET_EMULATE_RTC
-	if (!(id & HPET_ID_NUMBER))
+	if (!(id & HPET_ID_NUMBER)) {
+		iounmap(hpet_virt_address);
+		hpet_virt_address = NULL;
 		return -1;
+	}
 #endif
 
 
 	hpet_period = hpet_readl(HPET_PERIOD);
-	if ((hpet_period < HPET_MIN_PERIOD) || (hpet_period > HPET_MAX_PERIOD))
+	if ((hpet_period < HPET_MIN_PERIOD) || (hpet_period > HPET_MAX_PERIOD)) {
+		iounmap(hpet_virt_address);
+		hpet_virt_address = NULL;
 		return -1;
+	}
 
 	/*
 	 * 64 bit math
@@ -156,8 +162,11 @@ int __init hpet_enable(void)
 
 	hpet_use_timer = id & HPET_ID_LEGSUP;
 
-	if (hpet_timer_stop_set_go(hpet_tick))
+	if (hpet_timer_stop_set_go(hpet_tick)) {
+		iounmap(hpet_virt_address);
+		hpet_virt_address = NULL;
 		return -1;
+	}
 
 	use_hpet = 1;
 


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