change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/usb/misc/cytherm.c
..
..
@@ -36,20 +36,6 @@
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 };
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-/* local function prototypes */
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-static int cytherm_probe(struct usb_interface *interface, 
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-			 const struct usb_device_id *id);
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-static void cytherm_disconnect(struct usb_interface *interface);
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-
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-
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-/* usb specific object needed to register this driver with the usb subsystem */
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-static struct usb_driver cytherm_driver = {
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-	.name =		"cytherm",
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-	.probe =	cytherm_probe,
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-	.disconnect =	cytherm_disconnect,
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-	.id_table =	id_table,
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-};
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-
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 /* Vendor requests */
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 /* They all operate on one byte at a time */
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 #define PING       0x00
..
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@@ -304,6 +290,15 @@
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 }
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 static DEVICE_ATTR_RW(port1);
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+static struct attribute *cytherm_attrs[] = {
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+	&dev_attr_brightness.attr,
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+	&dev_attr_temp.attr,
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+	&dev_attr_button.attr,
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+	&dev_attr_port0.attr,
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+	&dev_attr_port1.attr,
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+	NULL,
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+};
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+ATTRIBUTE_GROUPS(cytherm);
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 static int cytherm_probe(struct usb_interface *interface, 
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 			 const struct usb_device_id *id)
..
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@@ -322,34 +317,10 @@
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 	dev->brightness = 0xFF;
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-	retval = device_create_file(&interface->dev, &dev_attr_brightness);
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-	if (retval)
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-		goto error;
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-	retval = device_create_file(&interface->dev, &dev_attr_temp);
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-	if (retval)
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-		goto error;
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-	retval = device_create_file(&interface->dev, &dev_attr_button);
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-	if (retval)
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-		goto error;
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-	retval = device_create_file(&interface->dev, &dev_attr_port0);
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-	if (retval)
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-		goto error;
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-	retval = device_create_file(&interface->dev, &dev_attr_port1);
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-	if (retval)
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-		goto error;
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-
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 	dev_info (&interface->dev,
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 		  "Cypress thermometer device now attached\n");
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 	return 0;
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-error:
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-	device_remove_file(&interface->dev, &dev_attr_brightness);
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-	device_remove_file(&interface->dev, &dev_attr_temp);
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-	device_remove_file(&interface->dev, &dev_attr_button);
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-	device_remove_file(&interface->dev, &dev_attr_port0);
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-	device_remove_file(&interface->dev, &dev_attr_port1);
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-	usb_set_intfdata (interface, NULL);
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-	usb_put_dev(dev->udev);
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-	kfree(dev);
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+
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 error_mem:
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 	return retval;
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 }
..
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@@ -360,12 +331,6 @@
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 	dev = usb_get_intfdata (interface);
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333
 
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-	device_remove_file(&interface->dev, &dev_attr_brightness);
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-	device_remove_file(&interface->dev, &dev_attr_temp);
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-	device_remove_file(&interface->dev, &dev_attr_button);
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-	device_remove_file(&interface->dev, &dev_attr_port0);
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-	device_remove_file(&interface->dev, &dev_attr_port1);
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-
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 	/* first remove the files, then NULL the pointer */
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 	usb_set_intfdata (interface, NULL);
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336
 
..
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@@ -376,6 +341,15 @@
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 	dev_info(&interface->dev, "Cypress thermometer now disconnected\n");
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 }
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343
 
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+/* usb specific object needed to register this driver with the usb subsystem */
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+static struct usb_driver cytherm_driver = {
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+	.name =		"cytherm",
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+	.probe =	cytherm_probe,
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+	.disconnect =	cytherm_disconnect,
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+	.id_table =	id_table,
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+	.dev_groups =	cytherm_groups,
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+};
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+
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 module_usb_driver(cytherm_driver);
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 MODULE_AUTHOR(DRIVER_AUTHOR);