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USB: suspend support for usb serial

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this implements generic support for suspend/resume for usb serial.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Oliver Neukum
2007-04-27 20:54:57 +02:00
committed by Greg Kroah-Hartman
parent dd172d72ad
commit ec22559e0b
3 changed files with 56 additions and 0 deletions
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31
drivers/usb/serial/usb-serial.c
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@@ -46,6 +46,8 @@ static struct usb_driver usb_serial_driver = {
.name = "usbserial",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.suspend = usb_serial_suspend,
.resume = usb_serial_resume,
.no_dynamic_id = 1,
};
@@ -1069,6 +1071,35 @@ void usb_serial_disconnect(struct usb_interface *interface)
dev_info(dev, "device disconnected\n");
}
int usb_serial_suspend(struct usb_interface *intf, pm_message_t message)
{
struct usb_serial *serial = usb_get_intfdata(intf);
struct usb_serial_port *port;
int i, r = 0;
if (serial) {
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
if (port)
kill_traffic(port);
}
}
if (serial->type->suspend)
serial->type->suspend(serial, message);
return r;
}
EXPORT_SYMBOL(usb_serial_suspend);
int usb_serial_resume(struct usb_interface *intf)
{
struct usb_serial *serial = usb_get_intfdata(intf);
return serial->type->resume(serial);
}
EXPORT_SYMBOL(usb_serial_resume);
static const struct tty_operations serial_ops = {
.open = serial_open,
.close = serial_close,