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Commit 950a3a3f authored by Rajkumar Raghupathy's avatar Rajkumar Raghupathy Committed by Stephen Boyd
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USB: Gadget: u_serial: Freeing usb requests as a part of gs_close 



The usb requests allocated during gs_open() were freed only as a part of
usb disconnect previously. So freeing the usb requests as a part of
gs_close() helps to free the requests on every network disconnect also.

Change-Id: I6edcab3cba94902ea3cb1a043403c93afa8c9d52
Signed-off-by: default avatarRajkumar Raghupathy <raghup@codeaurora.org>
parent 272d2fd1

drivers/usb/gadget/u_serial.c

+16 −0
Original line number Diff line number Diff line
@@ -941,6 +941,22 @@ static void gs_close(struct tty_struct *tty, struct file *file) 
			port->port_num, tty, file);



	wake_up(&port->port.close_wait);



	/*

	 * Freeing the previously queued requests as they are

	 * allocated again as a part of gs_open()

	 */

	if (port->port_usb) {

		spin_unlock_irq(&port->port_lock);

		usb_ep_fifo_flush(gser->out);

		usb_ep_fifo_flush(gser->in);

		spin_lock_irq(&port->port_lock);

		gs_free_requests(gser->out, &port->read_queue, NULL);

		gs_free_requests(gser->out, &port->read_pool, NULL);

		gs_free_requests(gser->in, &port->write_pool, NULL);

	}

	port->read_allocated = port->read_started =

		port->write_allocated = port->write_started = 0;

exit:

	spin_unlock_irq(&port->port_lock);

}