diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/serial/airprime.c | 5 | ||||
| -rw-r--r-- | drivers/usb/serial/cp2101.c | 5 | ||||
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 4 | ||||
| -rw-r--r-- | drivers/usb/serial/garmin_gps.c | 17 | ||||
| -rw-r--r-- | drivers/usb/serial/visor.c | 2 |
5 files changed, 24 insertions, 9 deletions
diff --git a/drivers/usb/serial/airprime.c b/drivers/usb/serial/airprime.c index 77bb893bf2e..f156dba0300 100644 --- a/drivers/usb/serial/airprime.c +++ b/drivers/usb/serial/airprime.c @@ -217,7 +217,10 @@ static void airprime_close(struct usb_serial_port *port, struct file * filp) priv->rts_state = 0; priv->dtr_state = 0; - airprime_send_setup(port); + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) + airprime_send_setup(port); + mutex_lock(&port->serial->disc_mutex); for (i = 0; i < NUM_READ_URBS; ++i) { usb_kill_urb (priv->read_urbp[i]); diff --git a/drivers/usb/serial/cp2101.c b/drivers/usb/serial/cp2101.c index cd5f71b7f63..f3ca66017a0 100644 --- a/drivers/usb/serial/cp2101.c +++ b/drivers/usb/serial/cp2101.c @@ -348,7 +348,10 @@ static void cp2101_close (struct usb_serial_port *port, struct file * filp) usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); - cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) + cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); + mutex_unlock(&port->serial->disc_mutex); } /* diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 2c142bb04fe..90dcc625f70 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1198,7 +1198,8 @@ static void ftdi_close (struct usb_serial_port *port, struct file *filp) dbg("%s", __FUNCTION__); - if (c_cflag & HUPCL){ + mutex_lock(&port->serial->disc_mutex); + if (c_cflag & HUPCL && !port->serial->disconnected){ /* Disable flow control */ if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), @@ -1212,6 +1213,7 @@ static void ftdi_close (struct usb_serial_port *port, struct file *filp) /* drop RTS and DTR */ clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); } /* Note change no line if hupcl is off */ + mutex_unlock(&port->serial->disc_mutex); /* cancel any scheduled reading */ cancel_delayed_work(&priv->rx_work); diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index f1c90cfe725..d74e43d6923 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -1020,19 +1020,26 @@ static void garmin_close (struct usb_serial_port *port, struct file * filp) if (!serial) return; - garmin_clear(garmin_data_p); + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) + garmin_clear(garmin_data_p); /* shutdown our urbs */ usb_kill_urb (port->read_urb); usb_kill_urb (port->write_urb); - if (noResponseFromAppLayer(garmin_data_p) || - ((garmin_data_p->flags & CLEAR_HALT_REQUIRED) != 0)) { - process_resetdev_request(port); - garmin_data_p->state = STATE_RESET; + if (!port->serial->disconnected) { + if (noResponseFromAppLayer(garmin_data_p) || + ((garmin_data_p->flags & CLEAR_HALT_REQUIRED) != 0)) { + process_resetdev_request(port); + garmin_data_p->state = STATE_RESET; + } else { + garmin_data_p->state = STATE_DISCONNECTED; + } } else { garmin_data_p->state = STATE_DISCONNECTED; } + mutex_unlock(&port->serial->disc_mutex); } diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index c2347995c78..22b3f78a388 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -362,7 +362,7 @@ static void visor_close (struct usb_serial_port *port, struct file * filp) kfree (transfer_buffer); } } - mutex_lock(&port->serial->disc_mutex); + mutex_unlock(&port->serial->disc_mutex); if (stats) dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n", |