USB: serial: refactor generic close

Export usb_serial_generic_close so that drivers can easily kill the read
and write urb and make sure that the write fifo is reset.

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

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 7e8e39818414..63f7cc45bcac 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -305,10 +305,7 @@ static void ch341_close(struct usb_serial_port *port)
 {
         dbg("%s - port %d", __func__, port->number);
 
-        /* shutdown our urbs */
-        dbg("%s - shutting down urbs", __func__);
-        usb_kill_urb(port->write_urb);
-        usb_kill_urb(port->read_urb);
+        usb_serial_generic_close(port);
         usb_kill_urb(port->interrupt_in_urb);
 }