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Commit f1e949ac authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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USB: serial: export generic throttle and unthrottle 



Allow drivers to use the generic throttle and unthrottle implementation.
This makes sense for drivers using the generic read functionality.

Note that drivers need to set these explicitly in order to enable them
(i.e., we do not set them at port probe if not defined).

Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent f08e07ac

drivers/usb/serial/generic.c

+2 −0
Original line number Diff line number Diff line
@@ -517,6 +517,7 @@ void usb_serial_generic_throttle(struct tty_struct *tty) 
	port->throttle_req = 1;

	spin_unlock_irqrestore(&port->lock, flags);

}

EXPORT_SYMBOL_GPL(usb_serial_generic_throttle);



void usb_serial_generic_unthrottle(struct tty_struct *tty)

{
@@ -534,6 +535,7 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) 
	if (was_throttled)

		usb_serial_generic_submit_read_urb(port, GFP_KERNEL);

}

EXPORT_SYMBOL_GPL(usb_serial_generic_unthrottle);



#ifdef CONFIG_MAGIC_SYSRQ

int usb_serial_handle_sysrq_char(struct tty_struct *tty,