usb serial drivers:

	- removed all usage of port->sem as the usb serial core now does this.

12 files changed, 3 insertions, 152 deletions

diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c
index 8b3f1ecf9198..86683cc20c69 100644
--- a/drivers/usb/serial/belkin_sa.c
+++ b/drivers/usb/serial/belkin_sa.c
@@ -207,8 +207,6 @@ static int  belkin_sa_open (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__" port %d", port->number);
 
-	down (&port->sem);
-	
 	++port->open_count;
 	
 	if (port->open_count == 1) {
@@ -230,8 +228,6 @@ static int  belkin_sa_open (struct usb_serial_port *port, struct file *filp)
 	}
 	
 exit:
-	up (&port->sem);
-
 	return retval;
 } /* belkin_sa_open */
 
@@ -249,8 +245,6 @@ static void belkin_sa_close (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__" port %d", port->number);
 
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -262,8 +256,6 @@ static void belkin_sa_close (struct usb_serial_port *port, struct file *filp)
 		}
 		port->open_count = 0;
 	}
-	
-	up (&port->sem);
 } /* belkin_sa_close */
 
 
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index e2c0536d6a7d..f185987c6541 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -151,8 +151,6 @@ static int  cyberjack_open (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__ " - port %d", port->number);
 
-	down (&port->sem);
-
 	++port->open_count;
 
 	if (port->open_count == 1) {
@@ -179,8 +177,6 @@ static int  cyberjack_open (struct usb_serial_port *port, struct file *filp)
 		dbg(__FUNCTION__ " - usb_submit_urb(int urb)");
 	}
 
-	up (&port->sem);
-
 	return result;
 }
 
@@ -188,8 +184,6 @@ static void cyberjack_close (struct usb_serial_port *port, struct file *filp)
 {
 	dbg(__FUNCTION__ " - port %d", port->number);
 
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -201,8 +195,6 @@ static void cyberjack_close (struct usb_serial_port *port, struct file *filp)
 		}
 		port->open_count = 0;
 	}
-
-	up (&port->sem);
 }
 
 static int cyberjack_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count)
@@ -225,8 +217,6 @@ static int cyberjack_write (struct usb_serial_port *port, int from_user, const u
 		return (0);
 	}
 
-	down (&port->sem);
-
 	if( (count+priv->wrfilled)>sizeof(priv->wrbuf) ) {
 		/* To much data  for buffer. Reset buffer. */
 		priv->wrfilled=0;
@@ -235,8 +225,9 @@ static int cyberjack_write (struct usb_serial_port *port, int from_user, const u
 
 	/* Copy data */
 	if (from_user) {
-		if (copy_from_user(priv->wrbuf+priv->wrfilled, buf, count))
+		if (copy_from_user(priv->wrbuf+priv->wrfilled, buf, count)) {
 			return -EFAULT;
+		}
 	} else {
 		memcpy (priv->wrbuf+priv->wrfilled, buf, count);
 	}  
@@ -277,7 +268,6 @@ static int cyberjack_write (struct usb_serial_port *port, int from_user, const u
 			/* Throw away data. No better idea what to do with it. */
 			priv->wrfilled=0;
 			priv->wrsent=0;
-			up (&port->sem);
 			return 0;
 		}
 
@@ -292,7 +282,6 @@ static int cyberjack_write (struct usb_serial_port *port, int from_user, const u
 		}
 	}
 
-	up (&port->sem);
 	return (count);
 } 
 
@@ -432,8 +421,6 @@ static void cyberjack_write_bulk_callback (struct urb *urb)
 			return;
 		}
 
-		down (&port->sem);
-
 		dbg(__FUNCTION__ " - transmitting data (frame n)");
 
 		length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ?
@@ -459,7 +446,6 @@ static void cyberjack_write_bulk_callback (struct urb *urb)
 			/* Throw away data. No better idea what to do with it. */
 			priv->wrfilled=0;
 			priv->wrsent=0;
-			up (&port->sem);
 			queue_task(&port->tqueue, &tq_immediate);
 			mark_bh(IMMEDIATE_BH);
 			return;
@@ -477,7 +463,6 @@ static void cyberjack_write_bulk_callback (struct urb *urb)
 			priv->wrsent=0;
 		}
 
-		up (&port->sem);
 		queue_task(&port->tqueue, &tq_immediate);
 		mark_bh(IMMEDIATE_BH);
 		return;
diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c
index 892ad71fa26e..3a636d7a4740 100644
--- a/drivers/usb/serial/empeg.c
+++ b/drivers/usb/serial/empeg.c
@@ -157,8 +157,6 @@ static int empeg_open (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__ " - port %d", port->number);
 
-	down (&port->sem);
-
 	++port->open_count;
 
 	if (port->open_count == 1) {
@@ -189,8 +187,6 @@ static int empeg_open (struct usb_serial_port *port, struct file *filp)
 
 	}
 
-	up (&port->sem);
-
 	return result;
 }
 
@@ -208,8 +204,6 @@ static void empeg_close (struct usb_serial_port *port, struct file * filp)
 	if (!serial)
 		return;
 
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -220,8 +214,6 @@ static void empeg_close (struct usb_serial_port *port, struct file * filp)
 		port->open_count = 0;
 	}
 
-	up (&port->sem);
-
 	/* Uncomment the following line if you want to see some statistics in your syslog */
 	/* info ("Bytes In = %d  Bytes Out = %d", bytes_in, bytes_out); */
 }
@@ -462,15 +454,7 @@ static void empeg_read_bulk_callback (struct urb *urb)
 static void empeg_throttle (struct usb_serial_port *port)
 {
 	dbg(__FUNCTION__ " - port %d", port->number);
-
-	down (&port->sem);
-
 	usb_unlink_urb (port->read_urb);
-
-	up (&port->sem);
-
-	return;
-
 }
 
 
@@ -480,8 +464,6 @@ static void empeg_unthrottle (struct usb_serial_port *port)
 
 	dbg(__FUNCTION__ " - port %d", port->number);
 
-	down (&port->sem);
-
 	port->read_urb->dev = port->serial->dev;
 
 	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
@@ -489,10 +471,7 @@ static void empeg_unthrottle (struct usb_serial_port *port)
 	if (result)
 		err(__FUNCTION__ " - failed submitting read urb, error %d", result);
 
-	up (&port->sem);
-
 	return;
-
 }
 
 
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 7c7b5d87ea82..911d3ac53f94 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -319,8 +319,6 @@ static int  ftdi_sio_open (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__);
 
-	down (&port->sem);
-	
 	++port->open_count;
 
 	if (port->open_count == 1){
@@ -361,7 +359,6 @@ static int  ftdi_sio_open (struct usb_serial_port *port, struct file *filp)
 			err(__FUNCTION__ " - failed submitting read urb, error %d", result);
 	}
 
-	up (&port->sem);
 	return result;
 } /* ftdi_sio_open */
 
@@ -374,7 +371,6 @@ static void ftdi_sio_close (struct usb_serial_port *port, struct file *filp)
 
 	dbg( __FUNCTION__);
 
-	down (&port->sem);
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -411,9 +407,6 @@ static void ftdi_sio_close (struct usb_serial_port *port, struct file *filp)
 			tty_hangup(port->tty);
 		}
 	}
-
-	up (&port->sem);
-
 } /* ftdi_sio_close */
 
 
@@ -447,8 +440,6 @@ static int ftdi_sio_write (struct usb_serial_port *port, int from_user,
 		return (0);
 	}		
 
-	down(&port->sem);
-
 	count += data_offset;
 	count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
 
@@ -456,7 +447,6 @@ static int ftdi_sio_write (struct usb_serial_port *port, int from_user,
 	if (from_user) {
 		if (copy_from_user(port->write_urb->transfer_buffer + data_offset,
 				   buf, count - data_offset )){
-			up (&port->sem);
 			return -EFAULT;
 		}
 	} else {
@@ -482,14 +472,11 @@ static int ftdi_sio_write (struct usb_serial_port *port, int from_user,
 	result = usb_submit_urb(port->write_urb, GFP_KERNEL);
 	if (result) {
 		err(__FUNCTION__ " - failed submitting write urb, error %d", result);
-		up (&port->sem);
 		return 0;
 	}
-	up (&port->sem);
 
 	dbg(__FUNCTION__ " write returning: %d", count - data_offset);
 	return (count - data_offset);
-
 } /* ftdi_sio_write */
 
 static void ftdi_sio_write_bulk_callback (struct urb *urb)
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c
index 69a572b6d8ac..033d90411d26 100644
--- a/drivers/usb/serial/ir-usb.c
+++ b/drivers/usb/serial/ir-usb.c
@@ -252,8 +252,6 @@ static int ir_open (struct usb_serial_port *port, struct file *filp)
 	
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	down (&port->sem);
-	
 	++port->open_count;
 	
 	if (port->open_count == 1) {
@@ -293,9 +291,6 @@ static int ir_open (struct usb_serial_port *port, struct file *filp)
 		if (result)
 			err("%s - failed submitting read urb, error %d", __FUNCTION__, result);
 	}
-	
-	up (&port->sem);
-	
 	return result;
 }
 
@@ -312,8 +307,6 @@ static void ir_close (struct usb_serial_port *port, struct file * filp)
 	if (!serial)
 		return;
 	
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -324,7 +317,6 @@ static void ir_close (struct usb_serial_port *port, struct file * filp)
 		port->open_count = 0;
 
 	}
-	up (&port->sem);
 }
 
 static int ir_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count)
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 9f6f30ed281c..d8d8a2e83bb2 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -861,10 +861,8 @@ static int keyspan_open (struct usb_serial_port *port, struct file *filp)
 	
 	dbg("keyspan_open called for port%d.\n", port->number); 
 
-	down (&port->sem);
 	already_active = port->open_count;
 	++port->open_count;
-	up (&port->sem);
 
 	if (already_active)
 		return 0;
@@ -926,8 +924,6 @@ static void keyspan_close(struct usb_serial_port *port, struct file *filp)
 	p_priv->out_flip = 0;
 	p_priv->in_flip = 0;
 
-	down (&port->sem);
-
 	if (--port->open_count <= 0) {
 		if (serial->dev) {
 			/* Stop reading/writing urbs */
@@ -941,7 +937,6 @@ static void keyspan_close(struct usb_serial_port *port, struct file *filp)
 		port->open_count = 0;
 		port->tty = 0;
 	}
-	up (&port->sem);
 }
 
 
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index e17f1b3bee84..ae37c1ff9b86 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -662,8 +662,6 @@ static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
 	int rc = 0;
 	struct keyspan_pda_private *priv;
 
-	down (&port->sem);
-
 	++port->open_count;
 
 	if (port->open_count == 1) {
@@ -707,12 +705,9 @@ static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
 
 	}
 
-
-	up (&port->sem);
 	return rc;
 error:
 	--port->open_count;
-	up (&port->sem);
 	return rc;
 }
 
@@ -721,8 +716,6 @@ static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
 {
 	struct usb_serial *serial = port->serial;
 
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -737,8 +730,6 @@ static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
 		}
 		port->open_count = 0;
 	}
-
-	up (&port->sem);
 }
 
 
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index ecb89c7f2e11..3aa9c40e2c61 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -358,8 +358,6 @@ static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__" port %d", port->number);
 
-	down (&port->sem);
-	
 	++port->open_count;
 
 	if (port->open_count == 1) {
@@ -437,8 +435,6 @@ static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 	}
 
 exit:
-	up (&port->sem);
-	
 	return retval;
 } /* klsi_105_open */
 
@@ -455,8 +451,6 @@ static void klsi_105_close (struct usb_serial_port *port, struct file *filp)
 	if(!serial)
 		return;
 
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -482,8 +476,6 @@ static void klsi_105_close (struct usb_serial_port *port, struct file *filp)
 		port->open_count = 0;
 		info("kl5kusb105 port stats: %ld bytes in, %ld bytes out", priv->bytes_in, priv->bytes_out);
 	}
-	
-	up (&port->sem);
 } /* klsi_105_close */
 
 
@@ -505,9 +497,6 @@ static int klsi_105_write (struct usb_serial_port *port, int from_user,
 
 	dbg(__FUNCTION__ " - port %d", port->number);
 
-	down (&port->sem);	/* to lock against someone else trying to
-				   take an URB we just selected from the pool */
-
 	while (count > 0) {
 		/* try to find a free urb (write 0 bytes if none) */
 		struct urb *urb = NULL;
@@ -543,7 +532,6 @@ static int klsi_105_write (struct usb_serial_port *port, int from_user,
 		if (from_user) {
 			if (copy_from_user(urb->transfer_buffer
 					   + KLSI_105_DATA_OFFSET, buf, size)) {
-				up (&port->sem);
 				return -EFAULT;
 			}
 		} else {
@@ -578,7 +566,6 @@ static int klsi_105_write (struct usb_serial_port *port, int from_user,
 		count -= size;
 	}
 exit:
-	up (&port->sem);
 	priv->bytes_out+=bytes_sent;
 
 	return bytes_sent;	/* that's how much we wrote */
@@ -1021,34 +1008,21 @@ static int klsi_105_ioctl (struct usb_serial_port *port, struct file * file,
 
 static void klsi_105_throttle (struct usb_serial_port *port)
 {
-
 	dbg(__FUNCTION__ " - port %d", port->number);
-
-	down (&port->sem);
-
 	usb_unlink_urb (port->read_urb);
-
-	up (&port->sem);
-
-	return;
 }
+
 static void klsi_105_unthrottle (struct usb_serial_port *port)
 {
 	int result;
 
 	dbg(__FUNCTION__ " - port %d", port->number);
 
-	down (&port->sem);
-
 	port->read_urb->dev = port->serial->dev;
 	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
 	if (result)
 		err(__FUNCTION__ " - failed submitting read urb, error %d",
 		    result);
-
-	up (&port->sem);
-
-	return;
 }
 
 
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index 16f32e65f490..1151d0d2170a 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -341,8 +341,6 @@ static int  mct_u232_open (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__" port %d", port->number);
 
-	down (&port->sem);
-	
 	++port->open_count;
 
 	if (port->open_count == 1) {
@@ -398,8 +396,6 @@ static int  mct_u232_open (struct usb_serial_port *port, struct file *filp)
 	}
 
 exit:
-	up (&port->sem);
-	
 	return 0;
 } /* mct_u232_open */
 
@@ -408,8 +404,6 @@ static void mct_u232_close (struct usb_serial_port *port, struct file *filp)
 {
 	dbg(__FUNCTION__" port %d", port->number);
 
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -421,8 +415,6 @@ static void mct_u232_close (struct usb_serial_port *port, struct file *filp)
 		}
 		port->open_count = 0;
 	}
-	
-	up (&port->sem);
 } /* mct_u232_close */
 
 
@@ -454,16 +446,12 @@ static int mct_u232_write (struct usb_serial_port *port, int from_user,
 		
 	bytes_sent = 0;
 	while (count > 0) {
-		
-		down (&port->sem);
-		
 		size = (count > port->bulk_out_size) ? port->bulk_out_size : count;
 		
 		usb_serial_debug_data (__FILE__, __FUNCTION__, size, buf);
 		
 		if (from_user) {
 			if (copy_from_user(port->write_urb->transfer_buffer, buf, size)) {
-				up (&port->sem);
 				return -EFAULT;
 			}
 		}
@@ -486,12 +474,9 @@ static int mct_u232_write (struct usb_serial_port *port, int from_user,
 		if (result) {
 			err(__FUNCTION__
 			    " - failed submitting write urb, error %d", result);
-			up (&port->sem);
 			return result;
 		}
 
-		up (&port->sem);
-
 		bytes_sent += size;
 		if (write_blocking)
 			interruptible_sleep_on(&port->write_wait);
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 9a778fc3cd41..2eb34c553790 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -157,8 +157,6 @@ static int omninet_open (struct usb_serial_port *port, struct file *filp)
 	if (!serial)
 		return -ENODEV;
 
-	down (&port->sem);
-
 	++port->open_count;
 
 	if (port->open_count == 1) {
@@ -166,7 +164,6 @@ static int omninet_open (struct usb_serial_port *port, struct file *filp)
 		if( !od ) {
 			err(__FUNCTION__"- kmalloc(%Zd) failed.", sizeof(struct omninet_data));
 			port->open_count = 0;
-			up (&port->sem);
 			return -ENOMEM;
 		}
 
@@ -184,8 +181,6 @@ static int omninet_open (struct usb_serial_port *port, struct file *filp)
 			err(__FUNCTION__ " - failed submitting read urb, error %d", result);
 	}
 
-	up (&port->sem);
-
 	return result;
 }
 
@@ -204,8 +199,6 @@ static void omninet_close (struct usb_serial_port *port, struct file * filp)
 	if (!serial)
 		return;
 
-	down (&port->sem);
-
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -220,8 +213,6 @@ static void omninet_close (struct usb_serial_port *port, struct file * filp)
 		if (od)
 			kfree(od);
 	}
-
-	up (&port->sem);
 }
 
 
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index f6f14f60b6cb..57dedd00441c 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -367,8 +367,6 @@ static int pl2303_open (struct usb_serial_port *port, struct file *filp)
 		
 	dbg (__FUNCTION__ " -  port %d", port->number);
 
-	down (&port->sem);
-
 	++port->open_count;
 
 	if (port->open_count == 1) {
@@ -407,7 +405,6 @@ static int pl2303_open (struct usb_serial_port *port, struct file *filp)
 		result = usb_submit_urb (port->read_urb, GFP_KERNEL);
 		if (result) {
 			err(__FUNCTION__ " - failed submitting read urb, error %d", result);
-			up (&port->sem);
 			pl2303_close (port, NULL);
 			return -EPROTO;
 		}
@@ -417,12 +414,10 @@ static int pl2303_open (struct usb_serial_port *port, struct file *filp)
 		result = usb_submit_urb (port->interrupt_in_urb, GFP_KERNEL);
 		if (result) {
 			err(__FUNCTION__ " - failed submitting interrupt urb, error %d", result);
-			up (&port->sem);
 			pl2303_close (port, NULL);
 			return -EPROTO;
 		}
 	}
-	up (&port->sem);
 	return 0;
 }
 
@@ -442,8 +437,6 @@ static void pl2303_close (struct usb_serial_port *port, struct file *filp)
 	
 	dbg (__FUNCTION__ " - port %d", port->number);
 
-	down (&port->sem);
-
 	--port->open_count;
 	if (port->open_count <= 0) {
 		if (serial->dev) {
@@ -478,8 +471,6 @@ static void pl2303_close (struct usb_serial_port *port, struct file *filp)
 		}
 		port->open_count = 0;
 	}
-
-	up (&port->sem);
 }
 
 static int set_modem_info (struct usb_serial_port *port, unsigned int cmd, unsigned int *value)
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index e90ea4a33b8e..4485b3d26936 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -306,8 +306,6 @@ static int whiteheat_open (struct usb_serial_port *port, struct file *filp)
 
 	dbg(__FUNCTION__" - port %d", port->number);
 
-	down (&port->sem);
-
 	++port->open_count;
 	
 	if (port->open_count == 1) {
@@ -354,16 +352,12 @@ static int whiteheat_open (struct usb_serial_port *port, struct file *filp)
 	}
 
 	dbg(__FUNCTION__ " - exit");
-	up (&port->sem);
-	
 	return retval;
 
 error_exit:
 	--port->open_count;
 
 	dbg(__FUNCTION__ " - error_exit");
-	up (&port->sem);
-	
 	return retval;
 }
 
@@ -374,7 +368,6 @@ static void whiteheat_close(struct usb_serial_port *port, struct file * filp)
 	
 	dbg(__FUNCTION__ " - port %d", port->number);
 	
-	down (&port->sem);
 	--port->open_count;
 
 	if (port->open_count <= 0) {
@@ -391,7 +384,6 @@ static void whiteheat_close(struct usb_serial_port *port, struct file * filp)
 		usb_unlink_urb (port->read_urb);
 		port->open_count = 0;
 	}
-	up (&port->sem);
 }
 
 
@@ -410,8 +402,6 @@ static void whiteheat_set_termios (struct usb_serial_port *port, struct termios
 
 	dbg(__FUNCTION__ " -port %d", port->number);
 
-	down (&port->sem);
-
 	if ((!port->tty) || (!port->tty->termios)) {
 		dbg(__FUNCTION__" - no tty structures");
 		goto exit;
@@ -492,7 +482,6 @@ static void whiteheat_set_termios (struct usb_serial_port *port, struct termios
 	whiteheat_send_cmd (port->serial, WHITEHEAT_SETUP_PORT, (__u8 *)&port_settings, sizeof(port_settings));
 	
 exit:
-	up (&port->sem);
 	return;
 }