Subject: [PATCH 005/008] USB: serial: sierra_close() modifications
From: Elina Pasheva <epasheva@xxxxxxxxxxxxxxxxxx>
The following is summary of changes we have made to sierra.c driver in
[PATCH 005/008] from the series dealing with improving urb handling:
- Moved sierra_close() before sierra_open() to resolve dependencies introduced
by the code reorganization.
- Modified sierra_close() to call sierra_stop_rx_urbs() and sierra_release_urb()
functions added in previous patch.
Signed-off-by: Elina Pasheva <epasheva@xxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/sierra.c | 44 ++++++++++++++++++++--------------
1 file changed, 27 insertions(+), 17 deletions(-)
--- a/drivers/usb/serial/sierra.c 2009-05-04 18:24:45.000000000 -0700
+++ b/drivers/usb/serial/sierra.c 2009-05-04 18:29:01.000000000 -0700
@@ -691,6 +691,33 @@ static struct urb *sierra_setup_urb(stru
return urb;
}
+static void sierra_close(struct usb_serial_port *port)
+{
+ int i;
+ struct usb_serial *serial = port->serial;
+ struct sierra_port_private *portdata;
+
+ dev_dbg(&port->dev, "%s\n", __func__);
+ portdata = usb_get_serial_port_data(port);
+
+ portdata->rts_state = 0;
+ portdata->dtr_state = 0;
+
+ if (serial->dev) {
+ mutex_lock(&serial->disc_mutex);
+ if (!serial->disconnected)
+ sierra_send_setup(port);
+ mutex_unlock(&serial->disc_mutex);
+
+ /* Stop reading urbs */
+ sierra_stop_rx_urbs(port);
+ /* .. and release them */
+ for (i = 0; i < N_IN_URB; i++) {
+ sierra_release_urb(portdata->in_urbs[i]);
+ portdata->in_urbs[i] = NULL;
+ }
+ }
+}
static int sierra_open(struct tty_struct *tty,
struct usb_serial_port *port, struct file *filp)
@@ -762,23 +789,6 @@ static void sierra_dtr_rts(struct usb_se
}
}
-static void sierra_close(struct usb_serial_port *port)
-{
- int i;
- struct usb_serial *serial = port->serial;
- struct sierra_port_private *portdata;
-
- dev_dbg(&port->dev, "%s\n", __func__);
- portdata = usb_get_serial_port_data(port);
-
- if (serial->dev) {
- /* Stop reading/writing urbs */
- for (i = 0; i < N_IN_URB; i++)
- usb_kill_urb(portdata->in_urbs[i]);
- }
- usb_kill_urb(port->interrupt_in_urb);
-}
-
static int sierra_startup(struct usb_serial *serial)
{
struct usb_serial_port *port;
--
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