Commit 56a1df46 authored May 15, 2010 by Johan Hovold Committed by Greg Kroah-Hartman May 20, 2010

USB: serial: add special case for processing of empty read urbs



Return immediately from generic process_read_urb if urb is empty.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent c0f631d1

drivers/usb/serial/generic.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -324,6 +324,9 @@ void usb_serial_generic_process_read_urb(struct urb *urb)
		char ch = (char )urb->transfer_buffer;
		int i;

		if (!urb->actual_length)
		return;

		tty = tty_port_tty_get(&port->port);
		if (!tty)
		return;