staging: line6: drop dirty sysfs attr

Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/line6/pod.c

@@ -156,12 +156,11 @@ static void pod_dump(struct usb_line6_pod *pod, const unsigned char *data)
 }
 
 /*
-	Store parameter value in driver memory and mark it as dirty.
+	Store parameter value in driver memory.
 */
 static void pod_store_parameter(struct usb_line6_pod *pod, int param, int value)
 {
 	pod->prog_data.control[param] = value;
-	pod->dirty = 1;
 }
 
 /*
@@ -170,7 +169,6 @@ static void pod_store_parameter(struct usb_line6_pod *pod, int param, int value)
 static void pod_save_button_pressed(struct usb_line6_pod *pod, int type,
 				    int index)
 {
-	pod->dirty = 0;
 	set_bit(POD_SAVE_PRESSED, &pod->atomic_flags);
 }
 
@@ -209,7 +207,6 @@ void line6_pod_process_message(struct usb_line6_pod *pod)
 
 	case LINE6_PROGRAM_CHANGE | LINE6_CHANNEL_DEVICE:
 	case LINE6_PROGRAM_CHANGE | LINE6_CHANNEL_HOST:
-		pod->dirty = 0;
 		set_bit(POD_CHANNEL_DIRTY, &pod->atomic_flags);
 		line6_dump_request_async(&pod->dumpreq, &pod->line6, 0,
 					 LINE6_DUMP_CURRENT);
@@ -777,19 +774,6 @@ static ssize_t pod_set_retrieve_amp_setup(struct device *dev,
 	return pod_send_retrieve_command(dev, buf, count, 0x0040, 0x0100);
 }
 
-/*
-	"read" request on "dirty" special file.
-*/
-static ssize_t pod_get_dirty(struct device *dev, struct device_attribute *attr,
-			     char *buf)
-{
-	struct usb_interface *interface = to_usb_interface(dev);
-	struct usb_line6_pod *pod = usb_get_intfdata(interface);
-	buf[0] = pod->dirty ? '1' : '0';
-	buf[1] = '\n';
-	return 2;
-}
-
 /*
 	"read" request on "midi_postprocess" special file.
 */
@@ -959,7 +943,6 @@ POD_GET_SYSTEM_PARAM(tuner_pitch, 1);
 
 /* POD special files: */
 static DEVICE_ATTR(device_id, S_IRUGO, pod_get_device_id, line6_nop_write);
-static DEVICE_ATTR(dirty, S_IRUGO, pod_get_dirty, line6_nop_write);
 static DEVICE_ATTR(dump, S_IWUSR | S_IRUGO, pod_get_dump, pod_set_dump);
 static DEVICE_ATTR(dump_buf, S_IWUSR | S_IRUGO, pod_get_dump_buf,
 		   pod_set_dump_buf);
@@ -1073,7 +1056,6 @@ static int pod_create_files2(struct device *dev)
 	int err;
 
 	CHECK_RETURN(device_create_file(dev, &dev_attr_device_id));
-	CHECK_RETURN(device_create_file(dev, &dev_attr_dirty));
 	CHECK_RETURN(device_create_file(dev, &dev_attr_dump));
 	CHECK_RETURN(device_create_file(dev, &dev_attr_dump_buf));
 	CHECK_RETURN(device_create_file(dev, &dev_attr_finish));
@@ -1213,7 +1195,6 @@ void line6_pod_disconnect(struct usb_interface *interface)
 					       properties->device_bit, dev);
 
 			device_remove_file(dev, &dev_attr_device_id);
-			device_remove_file(dev, &dev_attr_dirty);
 			device_remove_file(dev, &dev_attr_dump);
 			device_remove_file(dev, &dev_attr_dump_buf);
 			device_remove_file(dev, &dev_attr_finish);

drivers/staging/line6/pod.h

@@ -167,11 +167,6 @@ struct usb_line6_pod {
 	*/
 	int device_id;
 
-	/**
-		Flag to indicate modification of current program settings.
-	*/
-	char dirty;
-
 	/**
 		Flag to enable MIDI postprocessing.
 	*/