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path: root/drivers/usb
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-rw-r--r--drivers/usb/serial/airprime.c5
-rw-r--r--drivers/usb/serial/cp2101.c5
-rw-r--r--drivers/usb/serial/ftdi_sio.c4
-rw-r--r--drivers/usb/serial/garmin_gps.c17
-rw-r--r--drivers/usb/serial/visor.c2
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",