diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index bfb3bfc..ffa30c9 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -228,7 +228,7 @@
 static int
 acpi_table_compute_checksum(void *table_pointer, unsigned long length)
 {
-	u8 *p = (u8 *) table_pointer;
+	u8 *p = table_pointer;
 	unsigned long remains = length;
 	unsigned long sum = 0;