[PATCH] Improper mapping of ACPI-HPET table

Early ACPI table parse for HPET tables has a bug, where in it
does not do proper set_fixmap for ACPI-HPET table.

This bug was lost in oversight, and was not noticed during
my testing too, as the ACPI-HPET table on all my test
systems happened to be in 1st Gig of memory (where __va()
will do the job).

arch/i386/kernel/acpi/boot.c

@@ -304,7 +304,14 @@ static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
 {
 	struct acpi_table_hpet *hpet_tbl;
 
-	hpet_tbl = __va(phys);
+	if (!phys || !size)
+		return -EINVAL;
+
+	hpet_tbl = (struct acpi_table_hpet *) __acpi_map_table(phys, size);
+	if (!hpet_tbl) {
+		printk(KERN_WARNING PREFIX "Unable to map HPET\n");
+		return -ENODEV;
+	}
 
 	if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
 		printk(KERN_WARNING PREFIX "HPET timers must be located in "