[PATCH] x86/pci: fix dmar_tbl early_ioremap leak v2

[Yinghai Lu <yhlu.kernel@gmail.com>]

use early_acpi_os_unmap_memory

v2: move unmap_memory early...

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

---
 drivers/pci/dmar.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Index: linux-2.6/drivers/pci/dmar.c
===================================================================
--- linux-2.6.orig/drivers/pci/dmar.c
+++ linux-2.6/drivers/pci/dmar.c
@@ -42,6 +42,7 @@
 LIST_HEAD(dmar_drhd_units);
 
 static struct acpi_table_header * __initdata dmar_tbl;
+static acpi_size __initdata dmar_tbl_size;
 
 static void __init dmar_register_drhd_unit(struct dmar_drhd_unit *drhd)
 {
@@ -297,8 +298,9 @@ static int __init dmar_table_detect(void
 	acpi_status status = AE_OK;
 
 	/* if we could find DMAR table, then there are DMAR devices */
-	status = acpi_get_table(ACPI_SIG_DMAR, 0,
-				(struct acpi_table_header **)&dmar_tbl);
+	status = acpi_get_table_with_size(ACPI_SIG_DMAR, 0,
+				(struct acpi_table_header **)&dmar_tbl,
+				&dmar_tbl_size);
 
 	if (ACPI_SUCCESS(status) && !dmar_tbl) {
 		printk (KERN_WARNING PREFIX "Unable to map DMAR\n");
@@ -493,6 +495,9 @@ void __init detect_intel_iommu(void)
 	}
 end:
 #endif
+	if (dmar_tbl)
+		early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size);
+
 	dmar_tbl = NULL;
 }