[ACPI] handle out of spec EC bit width

http://bugzilla.kernel.org/show_bug.cgi?id=1744Signed-off-by: Luming Yu <luming.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/ec.c

 /*
  *  acpi_ec.c - ACPI Embedded Controller Driver ($Revision: 38 $)
  *
+ *  Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
  *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
  *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
  *
@@ -441,9 +442,15 @@ acpi_ec_space_handler (
 
 	ACPI_FUNCTION_TRACE("acpi_ec_space_handler");
 
-	if ((address > 0xFF) || (bit_width != 8) || !value || !handler_context)
+	if ((address > 0xFF) || !value || !handler_context)
 		return_VALUE(AE_BAD_PARAMETER);
 
+	if(bit_width != 8) {
+		printk(KERN_WARNING PREFIX "acpi_ec_space_handler: bit_width should be 8\n");
+		if (acpi_strict)
+			return_VALUE(AE_BAD_PARAMETER);
+	}
+
 	ec = (struct acpi_ec *) handler_context;
 
 	switch (function) {