From 7186364e46c3800635c283924bf25433d0a556a2 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 15 May 2012 15:40:00 -0700 Subject: USB: serial: hook up reset_resume callback The callback is now hooked up for any USB to serial driver that wants it. We only register the callback if any of the usb-serial structures want it, this keeps the USB core happy. Thanks to Alan Stern for the ideas on how to do this. Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 62dd92270525..130a57351c69 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1,7 +1,7 @@ /* * USB Serial Converter driver * - * Copyright (C) 1999 - 2005 Greg Kroah-Hartman (greg@kroah.com) + * Copyright (C) 1999 - 2012 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2000 Peter Berger (pberger@brimson.com) * Copyright (C) 2000 Al Borchers (borchers@steinerpoint.com) * @@ -1166,6 +1166,20 @@ int usb_serial_resume(struct usb_interface *intf) } EXPORT_SYMBOL(usb_serial_resume); +static int usb_serial_reset_resume(struct usb_interface *intf) +{ + struct usb_serial *serial = usb_get_intfdata(intf); + int rv; + + serial->suspending = 0; + if (serial->type->reset_resume) + rv = serial->type->reset_resume(serial); + else + rv = usb_serial_generic_resume(serial); + + return rv; +} + static const struct tty_operations serial_ops = { .open = serial_open, .close = serial_close, @@ -1403,6 +1417,14 @@ int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[] udriver->resume = usb_serial_resume; udriver->probe = usb_serial_probe; udriver->disconnect = usb_serial_disconnect; + + /* we only set the reset_resume field if the serial_driver has one */ + for (sd = serial_drivers; *sd; ++sd) { + if ((*sd)->reset_resume) + udriver->reset_resume = usb_serial_reset_resume; + break; + } + rc = usb_register(udriver); if (rc) return rc; -- cgit v1.2.3