[PATCH 1/2] arch/i386/kernel/hpet.c: ioremap balanced with iounmap

[Amol Lad <amol@verismonetworks.com>]

ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.

Tested (compilation only):
- using allmodconfig
- making sure the files are compiling without any warning/error due to
new changes

Signed-off-by: Amol Lad <amol@verismonetworks.com>
---
diff -uprN -X linux-2.6.19-rc1-orig/Documentation/dontdiff linux-2.6.19-rc1-orig/arch/i386/kernel/hpet.c linux-2.6.19-rc1/arch/i386/kernel/hpet.c
--- linux-2.6.19-rc1-orig/arch/i386/kernel/hpet.c	2006-09-21 10:15:25.000000000 +0530
+++ linux-2.6.19-rc1/arch/i386/kernel/hpet.c	2006-10-05 18:32:34.000000000 +0530
@@ -34,6 +34,7 @@ static int __init init_hpet_clocksource(
 	unsigned long hpet_period;
 	void __iomem* hpet_base;
 	u64 tmp;
+	int err;
 
 	if (!is_hpet_enabled())
 		return -ENODEV;
@@ -61,7 +62,11 @@ static int __init init_hpet_clocksource(
 	do_div(tmp, FSEC_PER_NSEC);
 	clocksource_hpet.mult = (u32)tmp;
 
-	return clocksource_register(&clocksource_hpet);
+	err = clocksource_register(&clocksource_hpet);
+	if (err)
+		iounmap(hpet_base);
+
+	return err;
 }
 
 module_init(init_hpet_clocksource);


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