USB: remove get_usb_serial() as it's pretty much unneeded

It also could hide real bugs, and that's not good.  And the name
implies that a reference is grabbed, and that's not true at all.

drivers/usb/serial/belkin_sa.c

@@ -244,20 +244,12 @@ static int  belkin_sa_open (struct usb_serial_port *port, struct file *filp)
 
 static void belkin_sa_close (struct usb_serial_port *port, struct file *filp)
 {
-	struct usb_serial *serial;
-
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-
 	dbg("%s port %d", __FUNCTION__, port->number);
 
-	if (serial->dev) {
-		/* shutdown our bulk reads and writes */
-		usb_unlink_urb (port->write_urb);
-		usb_unlink_urb (port->read_urb);
-		usb_unlink_urb (port->interrupt_in_urb);
-	}
+	/* shutdown our bulk reads and writes */
+	usb_unlink_urb (port->write_urb);
+	usb_unlink_urb (port->read_urb);
+	usb_unlink_urb (port->interrupt_in_urb);
 } /* belkin_sa_close */
 
 

drivers/usb/serial/console.c

@@ -199,11 +199,12 @@ static void usb_console_write(struct console *co, const char *buf, unsigned coun
 {
 	static struct usbcons_info *info = &usbcons_info;
 	struct usb_serial_port *port = info->port;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+	struct usb_serial *serial;
 	int retval = -ENODEV;
 
-	if (!serial || !port)
+	if (!port)
 		return;
+	serial = port->serial;
 
 	if (count == 0)
 		return;

drivers/usb/serial/cyberjack.c

@@ -375,7 +375,6 @@ static void cyberjack_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 	struct cyberjack_private *priv = usb_get_serial_port_data(port);
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	short todo;
@@ -384,11 +383,6 @@ static void cyberjack_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 	
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, urb->transfer_buffer);
 		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
@@ -436,15 +430,9 @@ static void cyberjack_write_bulk_callback (struct urb *urb, struct pt_regs *regs
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 	struct cyberjack_private *priv = usb_get_serial_port_data(port);
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 	
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
 		return;
@@ -472,11 +460,11 @@ static void cyberjack_write_bulk_callback (struct urb *urb, struct pt_regs *regs
 		priv->wrsent+=length;
 
 		/* set up our urb */
-		usb_fill_bulk_urb(port->write_urb, serial->dev, 
-			      usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress),
+		usb_fill_bulk_urb(port->write_urb, port->serial->dev, 
+			      usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress),
 			      port->write_urb->transfer_buffer, length,
-			      ((serial->type->write_bulk_callback) ? 
-			       serial->type->write_bulk_callback : 
+			      ((port->serial->type->write_bulk_callback) ? 
+			       port->serial->type->write_bulk_callback : 
 			       cyberjack_write_bulk_callback), 
 			      port);
 

drivers/usb/serial/empeg.c

@@ -187,18 +187,10 @@ static int empeg_open (struct usb_serial_port *port, struct file *filp)
 
 static void empeg_close (struct usb_serial_port *port, struct file * filp)
 {
-	struct usb_serial *serial;
-
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-
-	if (serial->dev) {
-		/* shutdown our bulk read */
-		usb_unlink_urb (port->read_urb);
-	}
+	/* shutdown our bulk read */
+	usb_unlink_urb (port->read_urb);
 	/* Uncomment the following line if you want to see some statistics in your syslog */
 	/* dev_info (&port->dev, "Bytes In = %d  Bytes Out = %d\n", bytes_in, bytes_out); */
 }
@@ -361,7 +353,6 @@ static void empeg_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 static void empeg_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	int i;
@@ -369,11 +360,6 @@ static void empeg_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 		return;
@@ -404,8 +390,8 @@ static void empeg_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 	/* Continue trying to always read  */
 	usb_fill_bulk_urb(
 		port->read_urb,
-		serial->dev, 
-		usb_rcvbulkpipe(serial->dev,
+		port->serial->dev, 
+		usb_rcvbulkpipe(port->serial->dev,
 			port->bulk_in_endpointAddress),
 		port->read_urb->transfer_buffer,
 		port->read_urb->transfer_buffer_length,

drivers/usb/serial/generic.c

@@ -220,7 +220,7 @@ int usb_serial_generic_chars_in_buffer (struct usb_serial_port *port)
 void usb_serial_generic_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+	struct usb_serial *serial = port->serial;
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	int i;
@@ -228,11 +228,6 @@ void usb_serial_generic_read_bulk_callback (struct urb *urb, struct pt_regs *reg
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 		return;
@@ -270,15 +265,9 @@ void usb_serial_generic_read_bulk_callback (struct urb *urb, struct pt_regs *reg
 void usb_serial_generic_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
 		return;

drivers/usb/serial/io_edgeport.c

@@ -1219,52 +1219,45 @@ static void block_until_tx_empty (struct edgeport_port *edge_port)
  *****************************************************************************/
 static void edge_close (struct usb_serial_port *port, struct file * filp)
 {
-	struct usb_serial *serial;
 	struct edgeport_serial *edge_serial;
 	struct edgeport_port *edge_port;
 	int status;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 			 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-	
-	edge_serial = usb_get_serial_data(serial);
+	edge_serial = usb_get_serial_data(port->serial);
 	edge_port = usb_get_serial_port_data(port);
 	if ((edge_serial == NULL) || (edge_port == NULL))
 		return;
 	
-	if (serial->dev) {
-		// block until tx is empty
-		block_until_tx_empty(edge_port);
+	// block until tx is empty
+	block_until_tx_empty(edge_port);
 
-		edge_port->closePending = TRUE;
+	edge_port->closePending = TRUE;
 
-		/* flush and chase */
-		edge_port->chaseResponsePending = TRUE;
+	/* flush and chase */
+	edge_port->chaseResponsePending = TRUE;
 
-		dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
-		status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
-		if (status == 0) {
-			// block until chase finished
-			block_until_chase_response(edge_port);
-		} else {
-			edge_port->chaseResponsePending = FALSE;
-		}
+	dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
+	status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
+	if (status == 0) {
+		// block until chase finished
+		block_until_chase_response(edge_port);
+	} else {
+		edge_port->chaseResponsePending = FALSE;
+	}
 
-		/* close the port */
-		dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
-		send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
+	/* close the port */
+	dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
+	send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
 
-		//port->close = TRUE;
-		edge_port->closePending = FALSE;
-		edge_port->open = FALSE;
-		edge_port->openPending = FALSE;
+	//port->close = TRUE;
+	edge_port->closePending = FALSE;
+	edge_port->open = FALSE;
+	edge_port->openPending = FALSE;
 
-		if (edge_port->write_urb) {
-			usb_unlink_urb (edge_port->write_urb);
-		}
+	if (edge_port->write_urb) {
+		usb_unlink_urb (edge_port->write_urb);
 	}
 
 	if (edge_port->write_urb) {

drivers/usb/serial/io_ti.c

@@ -1792,23 +1792,17 @@ static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
 static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct tty_struct *tty;
 
 	dbg ("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg ("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg ("%s - nonzero write bulk status received: %d",
 		     __FUNCTION__, urb->status);
 
 		if (urb->status == -EPIPE) {
 			/* clear any problem that might have happened on this pipe */
-			usb_clear_halt (serial->dev, urb->pipe);
+			usb_clear_halt (port->serial->dev, urb->pipe);
 		}
 		return;
 	}
@@ -1978,7 +1972,6 @@ static int edge_open (struct usb_serial_port *port, struct file * filp)
 
 static void edge_close (struct usb_serial_port *port, struct file * filp)
 {
-	struct usb_serial *serial;
 	struct edgeport_serial *edge_serial;
 	struct edgeport_port *edge_port;
 	int port_number;
@@ -1986,50 +1979,43 @@ static void edge_close (struct usb_serial_port *port, struct file * filp)
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 			 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-	
-	edge_serial = usb_get_serial_data(serial);
+	edge_serial = usb_get_serial_data(port->serial);
 	edge_port = usb_get_serial_port_data(port);
 	if ((edge_serial == NULL) || (edge_port == NULL))
 		return;
 	
-	if (serial->dev) {
-		/* The bulkreadcompletion routine will check 
-		 * this flag and dump add read data */
-		edge_port->close_pending = 1;
-
-		/* chase the port close */
-		TIChasePort (edge_port);
-
-		usb_unlink_urb (port->read_urb);
-
-		/* assuming we can still talk to the device,
-		 * send a close port command to it */
-		dbg("%s - send umpc_close_port", __FUNCTION__);
-		port_number = port->number - port->serial->minor;
-		status = TIWriteCommandSync (port->serial->dev,
-					     UMPC_CLOSE_PORT,
-					     (__u8)(UMPM_UART1_PORT + port_number),
-					     0,
-					     NULL,
-					     0);
-		--edge_port->edge_serial->num_ports_open;
-		if (edge_port->edge_serial->num_ports_open <= 0) {
-			/* last port is now closed, let's shut down our interrupt urb */
-			usb_unlink_urb (serial->port[0]->interrupt_in_urb);
-			edge_port->edge_serial->num_ports_open = 0;
-		}
-	edge_port->close_pending = 0;
+	/* The bulkreadcompletion routine will check 
+	 * this flag and dump add read data */
+	edge_port->close_pending = 1;
+
+	/* chase the port close */
+	TIChasePort (edge_port);
+
+	usb_unlink_urb (port->read_urb);
+
+	/* assuming we can still talk to the device,
+	 * send a close port command to it */
+	dbg("%s - send umpc_close_port", __FUNCTION__);
+	port_number = port->number - port->serial->minor;
+	status = TIWriteCommandSync (port->serial->dev,
+				     UMPC_CLOSE_PORT,
+				     (__u8)(UMPM_UART1_PORT + port_number),
+				     0,
+				     NULL,
+				     0);
+	--edge_port->edge_serial->num_ports_open;
+	if (edge_port->edge_serial->num_ports_open <= 0) {
+		/* last port is now closed, let's shut down our interrupt urb */
+		usb_unlink_urb (port->serial->port[0]->interrupt_in_urb);
+		edge_port->edge_serial->num_ports_open = 0;
 	}
+	edge_port->close_pending = 0;
 
 	dbg("%s - exited", __FUNCTION__);
 }
 
 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
 {
-	struct usb_serial *serial = port->serial;
 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 	int result;
 
@@ -2062,8 +2048,8 @@ static int edge_write (struct usb_serial_port *port, int from_user, const unsign
 	usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
 
 	/* set up our urb */
-	usb_fill_bulk_urb (port->write_urb, serial->dev,
-			   usb_sndbulkpipe (serial->dev,
+	usb_fill_bulk_urb (port->write_urb, port->serial->dev,
+			   usb_sndbulkpipe (port->serial->dev,
 					    port->bulk_out_endpointAddress),
 			   port->write_urb->transfer_buffer, count,
 			   edge_bulk_out_callback,

drivers/usb/serial/ipaq.c

@@ -284,19 +284,13 @@ static int ipaq_open(struct usb_serial_port *port, struct file *filp)
 
 static void ipaq_close(struct usb_serial_port *port, struct file *filp)
 {
-	struct usb_serial	*serial;
 	struct ipaq_private	*priv = usb_get_serial_port_data(port);
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 			 
-	serial = get_usb_serial(port, __FUNCTION__);
-	if (!serial)
-		return;
-
 	/*
 	 * shut down bulk read and write
 	 */
-
 	usb_unlink_urb(port->write_urb);
 	usb_unlink_urb(port->read_urb);
 	ipaq_destroy_lists(port);
@@ -310,18 +304,12 @@ static void ipaq_close(struct usb_serial_port *port, struct file *filp)
 static void ipaq_read_bulk_callback(struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port	*port = (struct usb_serial_port *)urb->context;
-	struct usb_serial	*serial = get_usb_serial (port, __FUNCTION__);
 	struct tty_struct	*tty;
 	unsigned char		*data = urb->transfer_buffer;
 	int			i, result;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 		return;
@@ -344,8 +332,8 @@ static void ipaq_read_bulk_callback(struct urb *urb, struct pt_regs *regs)
 	}
 
 	/* Continue trying to always read  */
-	usb_fill_bulk_urb(port->read_urb, serial->dev, 
-		      usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev, 
+		      usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
 		      port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
 		      ipaq_read_bulk_callback, port);
 	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);

drivers/usb/serial/ir-usb.c

@@ -279,7 +279,6 @@ static int ir_startup (struct usb_serial *serial)
 
 static int ir_open (struct usb_serial_port *port, struct file *filp)
 {
-	struct usb_serial *serial = port->serial;
 	char *buffer;
 	int result = 0;
 
@@ -310,8 +309,8 @@ static int ir_open (struct usb_serial_port *port, struct file *filp)
 	/* Start reading from the device */
 	usb_fill_bulk_urb (
 		port->read_urb,
-		serial->dev, 
-		usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+		port->serial->dev, 
+		usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
 		port->read_urb->transfer_buffer,
 		port->read_urb->transfer_buffer_length,
 		ir_read_bulk_callback,
@@ -325,18 +324,10 @@ static int ir_open (struct usb_serial_port *port, struct file *filp)
 
 static void ir_close (struct usb_serial_port *port, struct file * filp)
 {
-	struct usb_serial *serial;
-
 	dbg("%s - port %d", __FUNCTION__, port->number);
 			 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-	
-	if (serial->dev) {
-		/* shutdown our bulk read */
-		usb_unlink_urb (port->read_urb);
-	}
+	/* shutdown our bulk read */
+	usb_unlink_urb (port->read_urb);
 }
 
 static int ir_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count)
@@ -424,18 +415,12 @@ static void ir_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 static void ir_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	int result;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (!port->open_count) {
 		dbg("%s - port closed.", __FUNCTION__);
 		return;
@@ -484,8 +469,8 @@ static void ir_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 			/* Continue trying to always read */
 			usb_fill_bulk_urb (
 				port->read_urb,
-				serial->dev, 
-				usb_rcvbulkpipe(serial->dev,
+				port->serial->dev, 
+				usb_rcvbulkpipe(port->serial->dev,
 					port->bulk_in_endpointAddress),
 				port->read_urb->transfer_buffer,
 				port->read_urb->transfer_buffer_length,

drivers/usb/serial/keyspan.c

@@ -1141,14 +1141,10 @@ static inline void stop_urb(struct urb *urb)
 static void keyspan_close(struct usb_serial_port *port, struct file *filp)
 {
 	int			i;
-	struct usb_serial	*serial;
+	struct usb_serial	*serial = port->serial;
 	struct keyspan_serial_private 	*s_priv;
 	struct keyspan_port_private 	*p_priv;
 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-
 	dbg("%s", __FUNCTION__);
 	s_priv = usb_get_serial_data(serial);
 	p_priv = usb_get_serial_port_data(port);

drivers/usb/serial/kl5kusb105.c

@@ -187,12 +187,13 @@ struct klsi_105_private {
 
 #define KLSI_TIMEOUT	 (HZ * 5 ) /* default urb timeout */
 
-static int klsi_105_chg_port_settings(struct usb_serial *serial,
+static int klsi_105_chg_port_settings(struct usb_serial_port *port,
 				      struct klsi_105_port_settings *settings)
 {
 	int rc;
 
-        rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+        rc = usb_control_msg(port->serial->dev,
+			     usb_sndctrlpipe(port->serial->dev, 0),
 			     KL5KUSB105A_SIO_SET_DATA,
                              USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE,
 			     0, /* value */
@@ -227,7 +228,7 @@ static unsigned long klsi_105_status2linestate(const __u16 status)
  */
 /* It seems that the status buffer has always only 2 bytes length */
 #define KLSI_STATUSBUF_LEN	2
-static int klsi_105_get_line_state(struct usb_serial *serial,
+static int klsi_105_get_line_state(struct usb_serial_port *port,
 				   unsigned long *line_state_p)
 {
 	int rc;
@@ -235,7 +236,8 @@ static int klsi_105_get_line_state(struct usb_serial *serial,
 	__u16 status;
 
 	info("%s - sending SIO Poll request", __FUNCTION__);
-        rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+        rc = usb_control_msg(port->serial->dev,
+			     usb_rcvctrlpipe(port->serial->dev, 0),
 			     KL5KUSB105A_SIO_POLL,
                              USB_TYPE_VENDOR | USB_DIR_IN,
 			     0, /* value */
@@ -362,7 +364,6 @@ static void klsi_105_shutdown (struct usb_serial *serial)
 
 static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 {
-	struct usb_serial *serial = port->serial;
 	struct klsi_105_private *priv = usb_get_serial_port_data(port);
 	int retval = 0;
 	int rc;
@@ -389,7 +390,7 @@ static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 	cfg.databits = kl5kusb105a_dtb_8;
 	cfg.unknown1 = 0;
 	cfg.unknown2 = 1;
-	klsi_105_chg_port_settings(serial, &cfg);
+	klsi_105_chg_port_settings(port, &cfg);
 	
 	/* set up termios structure */
 	spin_lock_irqsave (&priv->lock, flags);
@@ -407,8 +408,8 @@ static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 	spin_unlock_irqrestore (&priv->lock, flags);
 
 	/* READ_ON and urb submission */
-	usb_fill_bulk_urb(port->read_urb, serial->dev, 
-		      usb_rcvbulkpipe(serial->dev,
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev, 
+		      usb_rcvbulkpipe(port->serial->dev,
 				      port->bulk_in_endpointAddress),
 		      port->read_urb->transfer_buffer,
 		      port->read_urb->transfer_buffer_length,
@@ -422,7 +423,8 @@ static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 		goto exit;
 	}
 
-	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev,0),
+	rc = usb_control_msg(port->serial->dev,
+			     usb_sndctrlpipe(port->serial->dev,0),
 			     KL5KUSB105A_SIO_CONFIGURE,
 			     USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE,
 			     KL5KUSB105A_SIO_CONFIGURE_READ_ON,
@@ -436,7 +438,7 @@ static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 	} else 
 		dbg("%s - enabled reading", __FUNCTION__);
 
-	rc = klsi_105_get_line_state(serial, &line_state);
+	rc = klsi_105_get_line_state(port, &line_state);
 	if (rc >= 0) {
 		spin_lock_irqsave (&priv->lock, flags);
 		priv->line_state = line_state;
@@ -453,20 +455,14 @@ static int  klsi_105_open (struct usb_serial_port *port, struct file *filp)
 
 static void klsi_105_close (struct usb_serial_port *port, struct file *filp)
 {
-	struct usb_serial *serial;
 	struct klsi_105_private *priv = usb_get_serial_port_data(port);
 	int rc;
 
 	dbg("%s port %d", __FUNCTION__, port->number);
 
-	serial = get_usb_serial (port, __FUNCTION__);
-
-	if(!serial)
-		return;
-
 	/* send READ_OFF */
-	rc = usb_control_msg (serial->dev,
-			      usb_sndctrlpipe(serial->dev, 0),
+	rc = usb_control_msg (port->serial->dev,
+			      usb_sndctrlpipe(port->serial->dev, 0),
 			      KL5KUSB105A_SIO_CONFIGURE,
 			      USB_TYPE_VENDOR | USB_DIR_OUT,
 			      KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
@@ -497,7 +493,6 @@ static void klsi_105_close (struct usb_serial_port *port, struct file *filp)
 static int klsi_105_write (struct usb_serial_port *port, int from_user,
 			   const unsigned char *buf, int count)
 {
-	struct usb_serial *serial = port->serial;
 	struct klsi_105_private *priv = usb_get_serial_port_data(port);
 	int result, size;
 	int bytes_sent=0;
@@ -551,8 +546,8 @@ static int klsi_105_write (struct usb_serial_port *port, int from_user,
 		((__u8 *)urb->transfer_buffer)[1] = (__u8) ((size & 0xFF00)>>8);
 
 		/* set up our urb */
-		usb_fill_bulk_urb(urb, serial->dev,
-			      usb_sndbulkpipe(serial->dev,
+		usb_fill_bulk_urb(urb, port->serial->dev,
+			      usb_sndbulkpipe(port->serial->dev,
 					      port->bulk_out_endpointAddress),
 			      urb->transfer_buffer,
 			      URB_TRANSFER_BUFFER_SIZE,
@@ -579,15 +574,9 @@ static int klsi_105_write (struct usb_serial_port *port, int from_user,
 static void klsi_105_write_bulk_callback ( struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = port->serial;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 	
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__,
 		    urb->status);
@@ -646,7 +635,6 @@ static int klsi_105_write_room (struct usb_serial_port *port)
 static void klsi_105_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = port->serial;
 	struct klsi_105_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
@@ -660,10 +648,6 @@ static void klsi_105_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 		    urb->status);
                 return;
         }
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
 	
 	/* The data received is again preceded by a length double-byte in LSB-
 	 * first order (see klsi_105_write() )
@@ -714,8 +698,8 @@ static void klsi_105_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 		priv->bytes_in += bytes_sent;
 	}
 	/* Continue trying to always read  */
-	usb_fill_bulk_urb(port->read_urb, serial->dev, 
-		      usb_rcvbulkpipe(serial->dev,
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev, 
+		      usb_rcvbulkpipe(port->serial->dev,
 				      port->bulk_in_endpointAddress),
 		      port->read_urb->transfer_buffer,
 		      port->read_urb->transfer_buffer_length,
@@ -730,7 +714,6 @@ static void klsi_105_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 static void klsi_105_set_termios (struct usb_serial_port *port,
 				  struct termios *old_termios)
 {
-	struct usb_serial *serial = port->serial;
 	struct klsi_105_private *priv = usb_get_serial_port_data(port);
 	unsigned int iflag = port->tty->termios->c_iflag;
 	unsigned int old_iflag = old_termios->c_iflag;
@@ -868,7 +851,7 @@ static void klsi_105_set_termios (struct usb_serial_port *port,
 	spin_unlock_irqrestore (&priv->lock, flags);
 	
 	/* now commit changes to device */
-	klsi_105_chg_port_settings(serial, &cfg);
+	klsi_105_chg_port_settings(port, &cfg);
 } /* klsi_105_set_termios */
 
 
@@ -890,14 +873,13 @@ static void mct_u232_break_ctl( struct usb_serial_port *port, int break_state )
 
 static int klsi_105_tiocmget (struct usb_serial_port *port, struct file *file)
 {
-	struct usb_serial *serial = port->serial;
 	struct klsi_105_private *priv = usb_get_serial_port_data(port);
 	unsigned long flags;
 	int rc;
 	unsigned long line_state;
 	dbg("%s - request, just guessing", __FUNCTION__);
 
-	rc = klsi_105_get_line_state(serial, &line_state);
+	rc = klsi_105_get_line_state(port, &line_state);
 	if (rc < 0) {
 		err("Reading line control failed (error = %d)", rc);
 		/* better return value? EAGAIN? */

drivers/usb/serial/omninet.c

@@ -151,17 +151,13 @@ struct omninet_data
 
 static int omninet_open (struct usb_serial_port *port, struct file *filp)
 {
-	struct usb_serial	*serial;
+	struct usb_serial	*serial = port->serial;
 	struct usb_serial_port	*wport;
 	struct omninet_data	*od;
 	int			result = 0;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return -ENODEV;
-
 	od = kmalloc( sizeof(struct omninet_data), GFP_KERNEL );
 	if( !od ) {
 		err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct omninet_data));
@@ -186,21 +182,15 @@ static int omninet_open (struct usb_serial_port *port, struct file *filp)
 
 static void omninet_close (struct usb_serial_port *port, struct file * filp)
 {
-	struct usb_serial 	*serial;
+	struct usb_serial 	*serial = port->serial;
 	struct usb_serial_port 	*wport;
 	struct omninet_data 	*od;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-
-	if (serial->dev) {
-		wport = serial->port[1];
-		usb_unlink_urb (wport->write_urb);
-		usb_unlink_urb (port->read_urb);
-	}
+	wport = serial->port[1];
+	usb_unlink_urb(wport->write_urb);
+	usb_unlink_urb(port->read_urb);
 
 	od = usb_get_serial_port_data(port);
 	if (od)
@@ -215,8 +205,6 @@ static void omninet_close (struct usb_serial_port *port, struct file * filp)
 static void omninet_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port 	*port 	= (struct usb_serial_port *)urb->context;
-	struct usb_serial	*serial = get_usb_serial (port, __FUNCTION__);
-
 	unsigned char 		*data 	= urb->transfer_buffer;
 	struct omninet_header 	*header = (struct omninet_header *) &data[0];
 
@@ -225,11 +213,6 @@ static void omninet_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 //	dbg("omninet_read_bulk_callback");
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 		return;
@@ -253,8 +236,8 @@ static void omninet_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 	}
 
 	/* Continue trying to always read  */
-	usb_fill_bulk_urb(urb, serial->dev, 
-		      usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+	usb_fill_bulk_urb(urb, port->serial->dev, 
+		      usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
 		      urb->transfer_buffer, urb->transfer_buffer_length,
 		      omninet_read_bulk_callback, port);
 	result = usb_submit_urb(urb, GFP_ATOMIC);

drivers/usb/serial/pl2303.c

@@ -471,16 +471,11 @@ static int pl2303_open (struct usb_serial_port *port, struct file *filp)
 
 static void pl2303_close (struct usb_serial_port *port, struct file *filp)
 {
-	struct usb_serial *serial;
 	struct pl2303_private *priv;
 	unsigned long flags;
 	unsigned int c_cflag;
 	int result;
 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-	
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
 	/* shutdown our urbs */
@@ -657,7 +652,6 @@ static void pl2303_shutdown (struct usb_serial *serial)
 static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct pl2303_private *priv = usb_get_serial_port_data(port);
 	unsigned char *data = urb->transfer_buffer;
 	unsigned long flags;
@@ -681,9 +675,6 @@ static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs)
 		goto exit;
 	}
 
-	if (!serial) {
-		return;
-	}
 
 	usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, urb->transfer_buffer);
 
@@ -708,7 +699,6 @@ static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs)
 static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct pl2303_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
@@ -720,11 +710,6 @@ static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
 		if (!port->open_count) {
@@ -735,7 +720,7 @@ static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 			/* PL2303 mysteriously fails with -EPROTO reschedule the read */
 			dbg("%s - caught -EPROTO, resubmitting the urb", __FUNCTION__);
 			urb->status = 0;
-			urb->dev = serial->dev;
+			urb->dev = port->serial->dev;
 			result = usb_submit_urb(urb, GFP_ATOMIC);
 			if (result)
 				dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
@@ -783,7 +768,7 @@ static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 	/* Schedule the next read _if_ we are still open */
 	if (port->open_count) {
-		urb->dev = serial->dev;
+		urb->dev = port->serial->dev;
 		result = usb_submit_urb(urb, GFP_ATOMIC);
 		if (result)
 			dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);

drivers/usb/serial/safe_serial.c

@@ -211,7 +211,6 @@ static __u16 __inline__ fcs_compute10 (unsigned char *sp, int len, __u16 fcs)
 static void safe_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	unsigned char *data = urb->transfer_buffer;
 	unsigned char length = urb->actual_length;
 	int i;
@@ -219,11 +218,6 @@ static void safe_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 	dbg ("%s", __FUNCTION__);
 
-	if (!serial) {
-		dbg ("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg ("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 		return;
@@ -272,8 +266,8 @@ static void safe_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 	}
 
 	/* Continue trying to always read  */
-	usb_fill_bulk_urb (urb, serial->dev,
-		       usb_rcvbulkpipe (serial->dev, port->bulk_in_endpointAddress),
+	usb_fill_bulk_urb (urb, port->serial->dev,
+		       usb_rcvbulkpipe (port->serial->dev, port->bulk_in_endpointAddress),
 		       urb->transfer_buffer, urb->transfer_buffer_length,
 		       safe_read_bulk_callback, port);
 
@@ -284,7 +278,6 @@ static void safe_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 static int safe_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count)
 {
-	struct usb_serial *serial = port->serial;
 	unsigned char *data;
 	int result;
 	int i;
@@ -367,7 +360,7 @@ static int safe_write (struct usb_serial_port *port, int from_user, const unsign
 		printk ("\n");
 	}
 #endif
-	port->write_urb->dev = serial->dev;
+	port->write_urb->dev = port->serial->dev;
 	if ((result = usb_submit_urb (port->write_urb, GFP_KERNEL))) {
 		err ("%s - failed submitting write urb, error %d", __FUNCTION__, result);
 		return 0;

drivers/usb/serial/usb-serial.c

@@ -492,10 +492,6 @@ static int serial_open (struct tty_struct *tty, struct file * filp)
 static void serial_close(struct tty_struct *tty, struct file * filp)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
-	if (!serial)
-		return;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -520,12 +516,8 @@ static void serial_close(struct tty_struct *tty, struct file * filp)
 static int serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	int retval = -EINVAL;
 
-	if (!serial)
-		return -ENODEV;
-
 	dbg("%s - port %d, %d byte(s)", __FUNCTION__, port->number, count);
 
 	if (!port->open_count) {
@@ -534,7 +526,7 @@ static int serial_write (struct tty_struct * tty, int from_user, const unsigned
 	}
 
 	/* pass on to the driver specific version of this function */
-	retval = serial->type->write(port, from_user, buf, count);
+	retval = port->serial->type->write(port, from_user, buf, count);
 
 exit:
 	return retval;
@@ -543,12 +535,8 @@ static int serial_write (struct tty_struct * tty, int from_user, const unsigned
 static int serial_write_room (struct tty_struct *tty) 
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	int retval = -EINVAL;
 
-	if (!serial)
-		return -ENODEV;
-
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
 	if (!port->open_count) {
@@ -557,7 +545,7 @@ static int serial_write_room (struct tty_struct *tty)
 	}
 
 	/* pass on to the driver specific version of this function */
-	retval = serial->type->write_room(port);
+	retval = port->serial->type->write_room(port);
 
 exit:
 	return retval;
@@ -566,12 +554,8 @@ static int serial_write_room (struct tty_struct *tty)
 static int serial_chars_in_buffer (struct tty_struct *tty) 
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	int retval = -EINVAL;
 
-	if (!serial)
-		return -ENODEV;
-
 	dbg("%s = port %d", __FUNCTION__, port->number);
 
 	if (!port->open_count) {
@@ -580,7 +564,7 @@ static int serial_chars_in_buffer (struct tty_struct *tty)
 	}
 
 	/* pass on to the driver specific version of this function */
-	retval = serial->type->chars_in_buffer(port);
+	retval = port->serial->type->chars_in_buffer(port);
 
 exit:
 	return retval;
@@ -589,10 +573,6 @@ static int serial_chars_in_buffer (struct tty_struct *tty)
 static void serial_throttle (struct tty_struct * tty)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
-	if (!serial)
-		return;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -602,8 +582,8 @@ static void serial_throttle (struct tty_struct * tty)
 	}
 
 	/* pass on to the driver specific version of this function */
-	if (serial->type->throttle)
-		serial->type->throttle(port);
+	if (port->serial->type->throttle)
+		port->serial->type->throttle(port);
 
 exit:
 	;
@@ -612,10 +592,6 @@ static void serial_throttle (struct tty_struct * tty)
 static void serial_unthrottle (struct tty_struct * tty)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
-	if (!serial)
-		return;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -625,8 +601,8 @@ static void serial_unthrottle (struct tty_struct * tty)
 	}
 
 	/* pass on to the driver specific version of this function */
-	if (serial->type->unthrottle)
-		serial->type->unthrottle(port);
+	if (port->serial->type->unthrottle)
+		port->serial->type->unthrottle(port);
 
 exit:
 	;
@@ -635,12 +611,8 @@ static void serial_unthrottle (struct tty_struct * tty)
 static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	int retval = -ENODEV;
 
-	if (!serial)
-		return -ENODEV;
-
 	dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
 
 	if (!port->open_count) {
@@ -649,8 +621,8 @@ static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned in
 	}
 
 	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->ioctl)
-		retval = serial->type->ioctl(port, file, cmd, arg);
+	if (port->serial->type->ioctl)
+		retval = port->serial->type->ioctl(port, file, cmd, arg);
 	else
 		retval = -ENOIOCTLCMD;
 
@@ -661,10 +633,6 @@ static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned in
 static void serial_set_termios (struct tty_struct *tty, struct termios * old)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
-	if (!serial)
-		return;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -674,8 +642,8 @@ static void serial_set_termios (struct tty_struct *tty, struct termios * old)
 	}
 
 	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->set_termios)
-		serial->type->set_termios(port, old);
+	if (port->serial->type->set_termios)
+		port->serial->type->set_termios(port, old);
 
 exit:
 	;
@@ -684,10 +652,6 @@ static void serial_set_termios (struct tty_struct *tty, struct termios * old)
 static void serial_break (struct tty_struct *tty, int break_state)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
-	if (!serial)
-		return;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -697,8 +661,8 @@ static void serial_break (struct tty_struct *tty, int break_state)
 	}
 
 	/* pass on to the driver specific version of this function if it is available */
-	if (serial->type->break_ctl)
-		serial->type->break_ctl(port, break_state);
+	if (port->serial->type->break_ctl)
+		port->serial->type->break_ctl(port, break_state);
 
 exit:
 	;
@@ -757,10 +721,6 @@ static int serial_read_proc (char *page, char **start, off_t off, int count, int
 static int serial_tiocmget (struct tty_struct *tty, struct file *file)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
-	if (!serial)
-		goto exit;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -769,8 +729,8 @@ static int serial_tiocmget (struct tty_struct *tty, struct file *file)
 		goto exit;
 	}
 
-	if (serial->type->tiocmget)
-		return serial->type->tiocmget(port, file);
+	if (port->serial->type->tiocmget)
+		return port->serial->type->tiocmget(port, file);
 
 exit:
 	return -EINVAL;
@@ -780,10 +740,6 @@ static int serial_tiocmset (struct tty_struct *tty, struct file *file,
 			    unsigned int set, unsigned int clear)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
-	if (!serial)
-		goto exit;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -792,8 +748,8 @@ static int serial_tiocmset (struct tty_struct *tty, struct file *file,
 		goto exit;
 	}
 
-	if (serial->type->tiocmset)
-		return serial->type->tiocmset(port, file, set, clear);
+	if (port->serial->type->tiocmset)
+		return port->serial->type->tiocmset(port, file, set, clear);
 
 exit:
 	return -EINVAL;
@@ -802,7 +758,6 @@ static int serial_tiocmset (struct tty_struct *tty, struct file *file,
 void usb_serial_port_softint(void *private)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)private;
-	struct usb_serial *serial;
 	struct tty_struct *tty;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
@@ -810,10 +765,6 @@ void usb_serial_port_softint(void *private)
 	if (!port)
 		return;
 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-
 	tty = port->tty;
 	if (!tty)
 		return;

drivers/usb/serial/usb-serial.h

@@ -294,19 +294,6 @@ extern struct usb_serial_device_type usb_serial_generic_device;
 extern struct bus_type usb_serial_bus_type;
 extern struct tty_driver *usb_serial_tty_driver;
 
-static inline struct usb_serial* get_usb_serial (struct usb_serial_port *port, const char *function) 
-{ 
-	/* if no port was specified, or it fails a paranoia check */
-	if (!port) {
-		/* then say that we don't have a valid usb_serial thing, which will
-		 * end up genrating -ENODEV return values */ 
-		return NULL;
-	}
-
-	return port->serial;
-}
-
-
 static inline void usb_serial_debug_data (const char *file, const char *function, int size, const unsigned char *data)
 {
 	int i;

drivers/usb/serial/visor.c

@@ -443,15 +443,10 @@ static int visor_open (struct usb_serial_port *port, struct file *filp)
 
 static void visor_close (struct usb_serial_port *port, struct file * filp)
 {
-	struct usb_serial *serial;
 	unsigned char *transfer_buffer;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 			 
-	serial = get_usb_serial (port, __FUNCTION__);
-	if (!serial)
-		return;
-	
 	/* shutdown our urbs */
 	usb_unlink_urb (port->read_urb);
 	if (port->interrupt_in_urb)
@@ -460,8 +455,8 @@ static void visor_close (struct usb_serial_port *port, struct file * filp)
 	/* Try to send shutdown message, if the device is gone, this will just fail. */
 	transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
 	if (transfer_buffer) {
-		usb_control_msg (serial->dev,
-				 usb_rcvctrlpipe(serial->dev, 0),
+		usb_control_msg (port->serial->dev,
+				 usb_rcvctrlpipe(port->serial->dev, 0),
 				 VISOR_CLOSE_NOTIFICATION, 0xc2,
 				 0x0000, 0x0000, 
 				 transfer_buffer, 0x12, 300);
@@ -578,7 +573,6 @@ static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	int i;
@@ -586,11 +580,6 @@ static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 		return;
@@ -613,9 +602,9 @@ static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 	bytes_in += urb->actual_length;
 
 	/* Continue trying to always read  */
-	usb_fill_bulk_urb (port->read_urb, serial->dev,
-			   usb_rcvbulkpipe (serial->dev,
-					    port->bulk_in_endpointAddress),
+	usb_fill_bulk_urb (port->read_urb, port->serial->dev,
+			   usb_rcvbulkpipe(port->serial->dev,
+					   port->bulk_in_endpointAddress),
 			   port->read_urb->transfer_buffer,
 			   port->read_urb->transfer_buffer_length,
 			   visor_read_bulk_callback, port);

drivers/usb/serial/whiteheat.c

@@ -984,7 +984,6 @@ static void command_port_write_callback (struct urb *urb, struct pt_regs *regs)
 static void command_port_read_callback (struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *command_port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (command_port, __FUNCTION__);
 	struct whiteheat_command_private *command_info;
 	unsigned char *data = urb->transfer_buffer;
 	int result;
@@ -997,11 +996,6 @@ static void command_port_read_callback (struct urb *urb, struct pt_regs *regs)
 		return;
 	}
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-	
 	usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
 
 	command_info = usb_get_serial_port_data(command_port);
@@ -1029,7 +1023,7 @@ static void command_port_read_callback (struct urb *urb, struct pt_regs *regs)
 	}
 	
 	/* Continue trying to always read */
-	command_port->read_urb->dev = serial->dev;
+	command_port->read_urb->dev = command_port->serial->dev;
 	result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
 	spin_unlock_irqrestore(&command_info->lock, flags);
 	if (result)
@@ -1040,7 +1034,6 @@ static void command_port_read_callback (struct urb *urb, struct pt_regs *regs)
 static void whiteheat_read_callback(struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct whiteheat_urb_wrap *wrap;
 	unsigned char *data = urb->transfer_buffer;
 	struct whiteheat_private *info = usb_get_serial_port_data(port);
@@ -1057,14 +1050,6 @@ static void whiteheat_read_callback(struct urb *urb, struct pt_regs *regs)
 	list_del(&wrap->list);
 	spin_unlock(&info->lock);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		spin_lock(&info->lock);
-		list_add(&wrap->list, &info->rx_urbs_free);
-		spin_unlock(&info->lock);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 		spin_lock(&info->lock);
@@ -1091,7 +1076,6 @@ static void whiteheat_read_callback(struct urb *urb, struct pt_regs *regs)
 static void whiteheat_write_callback(struct urb *urb, struct pt_regs *regs)
 {
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
 	struct whiteheat_private *info = usb_get_serial_port_data(port);
 	struct whiteheat_urb_wrap *wrap;
 
@@ -1108,11 +1092,6 @@ static void whiteheat_write_callback(struct urb *urb, struct pt_regs *regs)
 	list_add(&wrap->list, &info->tx_urbs_free);
 	spin_unlock(&info->lock);
 
-	if (!serial) {
-		dbg("%s - bad serial pointer, exiting", __FUNCTION__);
-		return;
-	}
-
 	if (urb->status) {
 		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
 		return;