Commit 08e1b427 authored by Christian Gromm's avatar Christian Gromm Committed by Greg Kroah-Hartman
Browse files

staging: most: usb: add PM functions 



This patch adds the implementation of the PM functions resume and suspend.

Signed-off-by: default avatarChristian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1588680892-9413-1-git-send-email-christian.gromm@microchip.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4fdc18d3

drivers/staging/most/usb/usb.c

+28 −0
Original line number Diff line number Diff line
@@ -1221,11 +1221,39 @@ static void hdm_disconnect(struct usb_interface *interface) 
	put_device(&mdev->dev);

}



static int hdm_suspend(struct usb_interface *interface, pm_message_t message)

{

	struct most_dev *mdev = usb_get_intfdata(interface);

	int i;



	mutex_lock(&mdev->io_mutex);

	for (i = 0; i < mdev->iface.num_channels; i++) {

		most_stop_enqueue(&mdev->iface, i);

		usb_kill_anchored_urbs(&mdev->busy_urbs[i]);

	}

	mutex_unlock(&mdev->io_mutex);

	return 0;

}



static int hdm_resume(struct usb_interface *interface)

{

	struct most_dev *mdev = usb_get_intfdata(interface);

	int i;



	mutex_lock(&mdev->io_mutex);

	for (i = 0; i < mdev->iface.num_channels; i++)

		most_resume_enqueue(&mdev->iface, i);

	mutex_unlock(&mdev->io_mutex);

	return 0;

}



static struct usb_driver hdm_usb = {

	.name = "hdm_usb",

	.id_table = usbid,

	.probe = hdm_probe,

	.disconnect = hdm_disconnect,

	.resume = hdm_resume,

	.suspend = hdm_suspend,

};



module_usb_driver(hdm_usb);