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path: root/drivers/usb/serial/sierra.c
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Diffstat (limited to 'drivers/usb/serial/sierra.c')
-rw-r--r--drivers/usb/serial/sierra.c38
1 files changed, 22 insertions, 16 deletions
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 45883988a005..5019325ba25d 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -296,7 +296,6 @@ struct sierra_port_private {
int dsr_state;
int dcd_state;
int ri_state;
-
unsigned int opened:1;
};
@@ -306,6 +305,8 @@ static int sierra_send_setup(struct usb_serial_port *port)
struct sierra_port_private *portdata;
__u16 interface = 0;
int val = 0;
+ int do_send = 0;
+ int retval;
dev_dbg(&port->dev, "%s\n", __func__);
@@ -324,10 +325,7 @@ static int sierra_send_setup(struct usb_serial_port *port)
*/
if (port->interrupt_in_urb) {
/* send control message */
- return usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- 0x22, 0x21, val, interface,
- NULL, 0, USB_CTRL_SET_TIMEOUT);
+ do_send = 1;
}
}
@@ -339,12 +337,18 @@ static int sierra_send_setup(struct usb_serial_port *port)
interface = 1;
else if (port->bulk_out_endpointAddress == 5)
interface = 2;
- return usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- 0x22, 0x21, val, interface,
- NULL, 0, USB_CTRL_SET_TIMEOUT);
+
+ do_send = 1;
}
- return 0;
+ if (!do_send)
+ return 0;
+
+ usb_autopm_get_interface(serial->interface);
+ retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
+ usb_autopm_put_interface(serial->interface);
+
+ return retval;
}
static void sierra_set_termios(struct tty_struct *tty,
@@ -773,8 +777,11 @@ static void sierra_close(struct usb_serial_port *port)
if (serial->dev) {
mutex_lock(&serial->disc_mutex);
- if (!serial->disconnected)
+ if (!serial->disconnected) {
+ serial->interface->needs_remote_wakeup = 0;
+ usb_autopm_get_interface(serial->interface);
sierra_send_setup(port);
+ }
mutex_unlock(&serial->disc_mutex);
spin_lock_irq(&intfdata->susp_lock);
portdata->opened = 0;
@@ -788,8 +795,6 @@ static void sierra_close(struct usb_serial_port *port)
sierra_release_urb(portdata->in_urbs[i]);
portdata->in_urbs[i] = NULL;
}
- usb_autopm_get_interface(serial->interface);
- serial->interface->needs_remote_wakeup = 0;
}
}
@@ -827,6 +832,8 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
if (err) {
/* get rid of everything as in close */
sierra_close(port);
+ /* restore balance for autopm */
+ usb_autopm_put_interface(serial->interface);
return err;
}
sierra_send_setup(port);
@@ -915,7 +922,7 @@ static void sierra_release(struct usb_serial *serial)
#ifdef CONFIG_PM
static void stop_read_write_urbs(struct usb_serial *serial)
{
- int i, j;
+ int i;
struct usb_serial_port *port;
struct sierra_port_private *portdata;
@@ -923,8 +930,7 @@ static void stop_read_write_urbs(struct usb_serial *serial)
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
portdata = usb_get_serial_port_data(port);
- for (j = 0; j < N_IN_URB; j++)
- usb_kill_urb(portdata->in_urbs[j]);
+ sierra_stop_rx_urbs(port);
usb_kill_anchored_urbs(&portdata->active);
}
}