eeepc-laptop: fix set_acpi() to return non-zero on failure

If the control method does not exist, return -ENODEV for consistency
with get_acpi()
Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/platform/x86/eeepc-laptop.c

@@ -289,26 +289,30 @@ static int read_acpi_int(acpi_handle handle, const char *method, int *val)
 
 static int set_acpi(int cm, int value)
 {
-	if (ehotk->cm_supported & (0x1 << cm)) {
 	const char *method = cm_setv[cm];
+
 	if (method == NULL)
 		return -ENODEV;
+	if ((ehotk->cm_supported & (0x1 << cm)) == 0)
+		return -ENODEV;
+
 	if (write_acpi_int(ehotk->handle, method, value, NULL))
 		pr_warning("Error writing %s\n", method);
-	}
 	return 0;
 }
 
 static int get_acpi(int cm)
 {
-	int value = -ENODEV;
-	if ((ehotk->cm_supported & (0x1 << cm))) {
 	const char *method = cm_getv[cm];
+	int value;
+
 	if (method == NULL)
 		return -ENODEV;
+	if ((ehotk->cm_supported & (0x1 << cm)) == 0)
+		return -ENODEV;
+
 	if (read_acpi_int(ehotk->handle, method, &value))
 		pr_warning("Error reading %s\n", method);
-	}
 	return value;
 }