PATCH: allow legacy free hw with no smi cmd port

[Alan Cox]

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.22-pre5/drivers/acpi/hardware/hwacpi.c linux.22-pre5-ac1/drivers/acpi/hardware/hwacpi.c
--- linux.22-pre5/drivers/acpi/hardware/hwacpi.c	2003-07-14 12:27:34.000000000 +0100
+++ linux.22-pre5-ac1/drivers/acpi/hardware/hwacpi.c	2003-07-07 16:30:46.000000000 +0100
@@ -208,6 +208,10 @@
 
 	ACPI_FUNCTION_TRACE ("hw_get_mode");
 
+	/* If there's no smi_cmd port, then it's ACPI only hw */
+	if (!acpi_gbl_FADT->smi_cmd)
+		return_VALUE (ACPI_SYS_MODE_ACPI);
+
 	status = acpi_get_register (ACPI_BITREG_SCI_ENABLE, &value, ACPI_MTX_LOCK);
 	if (ACPI_FAILURE (status)) {
 		return_VALUE (ACPI_SYS_MODE_LEGACY);