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>
git-mirror · May 20, 2010 · f26788d · f26788d
1 parent ec3ee50
commit f26788d
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Showing 6 changed files with 8 additions and 21 deletions.
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
@@ -355,14 +355,11 @@ static void ark3116_close(struct usb_serial_port *port)
 		/* deactivate interrupts */
 		ark3116_write_reg(serial, UART_IER, 0);
 
-		/* shutdown any bulk reads that might be going on */
-		if (serial->num_bulk_out)
-			usb_kill_urb(port->write_urb);
-		if (serial->num_bulk_in)
-			usb_kill_urb(port->read_urb);
+		usb_serial_generic_close(port);
 		if (serial->num_interrupt_in)
 			usb_kill_urb(port->interrupt_in_urb);
 	}
+
 }
 
 static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port)

diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c
@@ -246,9 +246,7 @@ static void belkin_sa_close(struct usb_serial_port *port)
 {
 	dbg("%s port %d", __func__, port->number);
 
-	/* shutdown our bulk reads and writes */
-	usb_kill_urb(port->write_urb);
-	usb_kill_urb(port->read_urb);
+	usb_serial_generic_close(port);
 	usb_kill_urb(port->interrupt_in_urb);
 } /* belkin_sa_close */
 

diff --git 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);
 }
 

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
@@ -422,10 +422,7 @@ static void cp210x_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);
 
 	mutex_lock(&port->serial->disc_mutex);
 	if (!port->serial->disconnected)

diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
@@ -179,6 +179,7 @@ void usb_serial_generic_close(struct usb_serial_port *port)
 	dbg("%s - port %d", __func__, port->number);
 	generic_cleanup(port);
 }
+EXPORT_SYMBOL_GPL(usb_serial_generic_close);
 
 static int usb_serial_multi_urb_write(struct tty_struct *tty,
 	struct usb_serial_port *port, const unsigned char *buf, int count)

diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
@@ -549,12 +549,9 @@ static void mct_u232_close(struct usb_serial_port *port)
 {
 	dbg("%s port %d", __func__, port->number);
 
-	if (port->serial->dev) {
-		/* shutdown our urbs */
-		usb_kill_urb(port->write_urb);
-		usb_kill_urb(port->read_urb);
+	usb_serial_generic_close(port);
+	if (port->serial->dev)
 		usb_kill_urb(port->interrupt_in_urb);
-	}
 } /* mct_u232_close */