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Commit d9bfbd16 authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
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USB: full power management support for the idmouse driver 



usb: full runtime PM support for idmouse driver

- add suspend/resume support
- add reset_resume support
- add support for autosuspend

Signed-off-by: default avatarOliver Neukum <oliver@neukum.org>
Tested-by: default avatarAndreas Deresch <aderesch@fs.tum.de>
parent b7800218

drivers/usb/misc/idmouse.c

+21 −0
Original line number Diff line number Diff line
@@ -96,6 +96,8 @@ static int idmouse_probe(struct usb_interface *interface, 
				const struct usb_device_id *id);



static void idmouse_disconnect(struct usb_interface *interface);

static int idmouse_suspend(struct usb_interface *intf, pm_message_t message);

static int idmouse_resume(struct usb_interface *intf);



/* file operation pointers */

static const struct file_operations idmouse_fops = {
@@ -117,7 +119,11 @@ static struct usb_driver idmouse_driver = { 
	.name = DRIVER_SHORT,

	.probe = idmouse_probe,

	.disconnect = idmouse_disconnect,

	.suspend = idmouse_suspend,

	.resume = idmouse_resume,

	.reset_resume = idmouse_resume,

	.id_table = idmouse_table,

	.supports_autosuspend = 1,

};



static int idmouse_create_image(struct usb_idmouse *dev)
@@ -197,6 +203,17 @@ static int idmouse_create_image(struct usb_idmouse *dev) 
	return result;

}



/* PM operations are nops as this driver does IO only during open() */

static int idmouse_suspend(struct usb_interface *intf, pm_message_t message)

{

	return 0;

}



static int idmouse_resume(struct usb_interface *intf)

{

	return 0;

}



static inline void idmouse_delete(struct usb_idmouse *dev)

{

	kfree(dev->bulk_in_buffer);
@@ -235,9 +252,13 @@ static int idmouse_open(struct inode *inode, struct file *file) 
	} else {



		/* create a new image and check for success */

		result = usb_autopm_get_interface(interface);

		if (result)

			goto error;

		result = idmouse_create_image (dev);

		if (result)

			goto error;

		usb_autopm_put_interface(interface);



		/* increment our usage count for the driver */

		++dev->open;