USB: remove unnecessary type casting of urb->context

urb->context code cleanup

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

27 files changed, 83 insertions, 83 deletions

diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c
index 5a2877c22129..0a322fc53d6e 100644
--- a/drivers/usb/serial/belkin_sa.c
+++ b/drivers/usb/serial/belkin_sa.c
@@ -248,7 +248,7 @@ static void belkin_sa_close (struct usb_serial_port *port, struct file *filp)
 
 static void belkin_sa_read_int_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct belkin_sa_private *priv;
 	unsigned char *data = urb->transfer_buffer;
 	int retval;
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index d077534ceaeb..c164e2cf2752 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -300,7 +300,7 @@ static int cyberjack_write_room( struct usb_serial_port *port )
 
 static void cyberjack_read_int_callback( struct urb *urb )
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct cyberjack_private *priv = usb_get_serial_port_data(port);
 	unsigned char *data = urb->transfer_buffer;
 	int status = urb->status;
@@ -357,7 +357,7 @@ resubmit:
 
 static void cyberjack_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct cyberjack_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
@@ -409,7 +409,7 @@ static void cyberjack_read_bulk_callback (struct urb *urb)
 
 static void cyberjack_write_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct cyberjack_private *priv = usb_get_serial_port_data(port);
 	int status = urb->status;
 
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index 01dfc0afc654..32121794808d 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1209,7 +1209,7 @@ static void cypress_unthrottle (struct usb_serial_port *port)
 
 static void cypress_read_int_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct cypress_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
@@ -1361,7 +1361,7 @@ continue_read:
 
 static void cypress_write_int_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct cypress_private *priv = usb_get_serial_port_data(port);
 	int result;
 	int status = urb->status;
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index c7cbc02f1a70..d17d1645714f 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -1227,7 +1227,7 @@ static int digi_write(struct usb_serial_port *port, const unsigned char *buf, in
 static void digi_write_bulk_callback(struct urb *urb)
 {
 
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct usb_serial *serial;
 	struct digi_port *priv;
 	struct digi_serial *serial_priv;
@@ -1605,7 +1605,7 @@ static void digi_shutdown(struct usb_serial *serial)
 
 static void digi_read_bulk_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct digi_port *priv;
 	struct digi_serial *serial_priv;
 	int ret;
@@ -1664,7 +1664,7 @@ static void digi_read_bulk_callback(struct urb *urb)
 static int digi_read_inb_callback(struct urb *urb)
 {
 
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct tty_struct *tty = port->tty;
 	struct digi_port *priv = usb_get_serial_port_data(port);
 	int opcode = ((unsigned char *)urb->transfer_buffer)[0];
@@ -1754,7 +1754,7 @@ static int digi_read_inb_callback(struct urb *urb)
 static int digi_read_oob_callback(struct urb *urb)
 {
 
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct usb_serial *serial = port->serial;
 	struct digi_port *priv = usb_get_serial_port_data(port);
 	int opcode, line, status, val;
diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c
index 5f731d4912f7..c5ec309a3cb1 100644
--- a/drivers/usb/serial/empeg.c
+++ b/drivers/usb/serial/empeg.c
@@ -340,7 +340,7 @@ static void empeg_write_bulk_callback (struct urb *urb)
 
 static void empeg_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	int result;
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 8b531b377dcb..23f51a41093e 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1377,7 +1377,7 @@ error_no_buffer:
 static void ftdi_write_bulk_callback (struct urb *urb)
 {
 	unsigned long flags;
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct ftdi_private *priv;
 	int data_offset;       /* will be 1 for the SIO and 0 otherwise */
 	unsigned long countback;
@@ -1460,7 +1460,7 @@ static int ftdi_chars_in_buffer (struct usb_serial_port *port)
 
 static void ftdi_read_bulk_callback (struct urb *urb)
 { /* ftdi_read_bulk_callback */
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct tty_struct *tty;
 	struct ftdi_private *priv;
 	unsigned long countread;
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 513d771adc4e..8ce5a56a48e3 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -1046,7 +1046,7 @@ static void garmin_close (struct usb_serial_port *port, struct file * filp)
 static void garmin_write_bulk_callback (struct urb *urb)
 {
 	unsigned long flags;
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int status = urb->status;
 
 	if (port) {
@@ -1286,7 +1286,7 @@ static void garmin_read_process(struct garmin_data * garmin_data_p,
 static void garmin_read_bulk_callback (struct urb *urb)
 {
 	unsigned long flags;
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct usb_serial *serial =  port->serial;
 	struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
 	unsigned char *data = urb->transfer_buffer;
@@ -1344,7 +1344,7 @@ static void garmin_read_int_callback (struct urb *urb)
 {
 	unsigned long flags;
 	int retval;
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct usb_serial *serial = port->serial;
 	struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
 	unsigned char *data = urb->transfer_buffer;
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 65765ce76251..537f12a027c2 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -331,7 +331,7 @@ static void flush_and_resubmit_read_urb (struct usb_serial_port *port)
 
 void usb_serial_generic_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	int status = urb->status;
 	unsigned long flags;
@@ -359,7 +359,7 @@ EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback);
 
 void usb_serial_generic_write_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int status = urb->status;
 
 	dbg("%s - port %d", __func__, port->number);
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 2b676732e9fa..ce2e487f3240 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -589,7 +589,7 @@ static int get_epic_descriptor(struct edgeport_serial *ep)
  *****************************************************************************/
 static void edge_interrupt_callback (struct urb *urb)
 {
-	struct edgeport_serial	*edge_serial = (struct edgeport_serial *)urb->context;
+	struct edgeport_serial	*edge_serial = urb->context;
 	struct edgeport_port *edge_port;
 	struct usb_serial_port *port;
 	unsigned char *data = urb->transfer_buffer;
@@ -689,7 +689,7 @@ exit:
  *****************************************************************************/
 static void edge_bulk_in_callback (struct urb *urb)
 {
-	struct edgeport_serial	*edge_serial = (struct edgeport_serial *)urb->context;
+	struct edgeport_serial	*edge_serial = urb->context;
 	unsigned char		*data = urb->transfer_buffer;
 	int			retval;
 	__u16			raw_data_length;
@@ -749,7 +749,7 @@ static void edge_bulk_in_callback (struct urb *urb)
  *****************************************************************************/
 static void edge_bulk_out_data_callback (struct urb *urb)
 {
-	struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
+	struct edgeport_port *edge_port = urb->context;
 	struct tty_struct *tty;
 	int status = urb->status;
 
@@ -782,7 +782,7 @@ static void edge_bulk_out_data_callback (struct urb *urb)
  *****************************************************************************/
 static void edge_bulk_out_cmd_callback (struct urb *urb)
 {
-	struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
+	struct edgeport_port *edge_port = urb->context;
 	struct tty_struct *tty;
 	int status = urb->status;
 
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index 0d412ede839a..05e4fa730730 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -1710,7 +1710,7 @@ static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8
 
 static void edge_interrupt_callback (struct urb *urb)
 {
-	struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
+	struct edgeport_serial *edge_serial = urb->context;
 	struct usb_serial_port *port;
 	struct edgeport_port *edge_port;
 	unsigned char *data = urb->transfer_buffer;
@@ -1803,7 +1803,7 @@ exit:
 
 static void edge_bulk_in_callback (struct urb *urb)
 {
-	struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
+	struct edgeport_port *edge_port = urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	struct tty_struct *tty;
 	int retval = 0;
@@ -1897,7 +1897,7 @@ static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned c
 
 static void edge_bulk_out_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 	int status = urb->status;
 
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index c90436ea8060..ea924dc48496 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -729,7 +729,7 @@ static void ipaq_close(struct usb_serial_port *port, struct file *filp)
 
 static void ipaq_read_bulk_callback(struct urb *urb)
 {
-	struct usb_serial_port	*port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port	*port = urb->context;
 	struct tty_struct	*tty;
 	unsigned char		*data = urb->transfer_buffer;
 	int			result;
@@ -869,7 +869,7 @@ static void ipaq_write_gather(struct usb_serial_port *port)
 
 static void ipaq_write_bulk_callback(struct urb *urb)
 {
-	struct usb_serial_port	*port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port	*port = urb->context;
 	struct ipaq_private	*priv = usb_get_serial_port_data(port);
 	unsigned long		flags;
 	int			result;
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c
index 496009cff3a8..004d57385a75 100644
--- a/drivers/usb/serial/ir-usb.c
+++ b/drivers/usb/serial/ir-usb.c
@@ -393,7 +393,7 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int
 
 static void ir_write_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int status = urb->status;
 
 	dbg("%s - port %d", __func__, port->number);
@@ -417,7 +417,7 @@ static void ir_write_bulk_callback (struct urb *urb)
 
 static void ir_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	int result;
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index b486a54c6f46..8a217648b250 100644
--- a/drivers/usb/serial/iuu_phoenix.c
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -186,7 +186,7 @@ static int iuu_tiocmget(struct usb_serial_port *port, struct file *file)
 
 static void iuu_rxcmd(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	dbg("%s - enter", __func__);
 
@@ -240,7 +240,7 @@ static int iuu_reset(struct usb_serial_port *port, u8 wt)
  */
 static void iuu_update_status_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct iuu_private *priv = usb_get_serial_port_data(port);
 	u8 *st;
 	dbg("%s - enter", __func__);
@@ -270,7 +270,7 @@ static void iuu_update_status_callback(struct urb *urb)
 
 static void iuu_status_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	dbg("%s - enter", __func__);
 
@@ -392,7 +392,7 @@ static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
 
 static void iuu_led_activity_on(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	char *buf_ptr = port->write_urb->transfer_buffer;
 	*buf_ptr++ = IUU_SET_LED;
@@ -413,7 +413,7 @@ static void iuu_led_activity_on(struct urb *urb)
 
 static void iuu_led_activity_off(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	char *buf_ptr = port->write_urb->transfer_buffer;
 	if (xmas == 1) {
@@ -616,7 +616,7 @@ static int iuu_uart_flush(struct usb_serial_port *port)
 
 static void read_buf_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	struct tty_struct *tty;
 	dbg("%s - urb->status = %d", __func__, urb->status);
@@ -692,7 +692,7 @@ static int iuu_read_buf(struct usb_serial_port *port, int len)
 
 static void iuu_uart_read_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct iuu_private *priv = usb_get_serial_port_data(port);
 	unsigned int flags;
 	int status;
@@ -781,7 +781,7 @@ static int iuu_uart_write(struct usb_serial_port *port, const u8 *buf,
 
 static void read_rxcmd_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	dbg("%s - enter", __func__);
 
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 0d122feb2b22..3df8a66c5c3c 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -445,7 +445,7 @@ static void	usa26_indat_callback(struct urb *urb)
 		return;
 	}
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	tty = port->tty;
 	if (tty && urb->actual_length) {
 		/* 0x80 bit is error flag */
@@ -490,7 +490,7 @@ static void	usa2x_outdat_callback(struct urb *urb)
 	struct usb_serial_port *port;
 	struct keyspan_port_private *p_priv;
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	p_priv = usb_get_serial_port_data(port);
 	dbg ("%s - urb %d", __func__, urb == p_priv->out_urbs[1]);
 
@@ -509,7 +509,7 @@ static void	usa26_outcont_callback(struct urb *urb)
 	struct usb_serial_port *port;
 	struct keyspan_port_private *p_priv;
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	p_priv = usb_get_serial_port_data(port);
 
 	if (p_priv->resend_cont) {
@@ -528,7 +528,7 @@ static void	usa26_instat_callback(struct urb *urb)
 	int old_dcd_state, err;
 	int status = urb->status;
 
-	serial = (struct usb_serial *) urb->context;
+	serial =  urb->context;
 
 	if (status) {
 		dbg("%s - nonzero status: %x", __func__, status);
@@ -599,7 +599,7 @@ static void usa28_indat_callback(struct urb *urb)
 
 	dbg ("%s", __func__);
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	p_priv = usb_get_serial_port_data(port);
 	data = urb->transfer_buffer;
 
@@ -613,7 +613,7 @@ static void usa28_indat_callback(struct urb *urb)
 			return;
 		}
 
-		port = (struct usb_serial_port *) urb->context;
+		port =  urb->context;
 		p_priv = usb_get_serial_port_data(port);
 		data = urb->transfer_buffer;
 
@@ -647,7 +647,7 @@ static void	usa28_outcont_callback(struct urb *urb)
 	struct usb_serial_port *port;
 	struct keyspan_port_private *p_priv;
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	p_priv = usb_get_serial_port_data(port);
 
 	if (p_priv->resend_cont) {
@@ -667,7 +667,7 @@ static void	usa28_instat_callback(struct urb *urb)
 	int old_dcd_state;
 	int status = urb->status;
 
-	serial = (struct usb_serial *) urb->context;
+	serial =  urb->context;
 
 	if (status) {
 		dbg("%s - nonzero status: %x", __func__, status);
@@ -733,7 +733,7 @@ static void	usa49_glocont_callback(struct urb *urb)
 
 	dbg ("%s", __func__);
 
-	serial = (struct usb_serial *) urb->context;
+	serial =  urb->context;
 	for (i = 0; i < serial->num_ports; ++i) {
 		port = serial->port[i];
 		p_priv = usb_get_serial_port_data(port);
@@ -761,7 +761,7 @@ static void	usa49_instat_callback(struct urb *urb)
 
 	dbg ("%s", __func__);
 
-	serial = (struct usb_serial *) urb->context;
+	serial =  urb->context;
 
 	if (status) {
 		dbg("%s - nonzero status: %x", __func__, status);
@@ -836,7 +836,7 @@ static void	usa49_indat_callback(struct urb *urb)
 		return;
 	}
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	tty = port->tty;
 	if (tty && urb->actual_length) {
 		/* 0x80 bit is error flag */
@@ -973,7 +973,7 @@ static void usa90_indat_callback(struct urb *urb)
 		return;
 	}
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	p_priv = usb_get_serial_port_data(port);
 
 	tty = port->tty;
@@ -1037,7 +1037,7 @@ static void	usa90_instat_callback(struct urb *urb)
 	int old_dcd_state, err;
 	int status = urb->status;
 
-	serial = (struct usb_serial *) urb->context;
+	serial =  urb->context;
 
 	if (status) {
 		dbg("%s - nonzero status: %x", __func__, status);
@@ -1084,7 +1084,7 @@ static void	usa90_outcont_callback(struct urb *urb)
 	struct usb_serial_port *port;
 	struct keyspan_port_private *p_priv;
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 	p_priv = usb_get_serial_port_data(port);
 
 	if (p_priv->resend_cont) {
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index b650fb4754b4..ff54203944ca 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -214,7 +214,7 @@ static void keyspan_pda_request_unthrottle(struct work_struct *work)
 
 static void keyspan_pda_rx_interrupt (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
        	struct tty_struct *tty = port->tty;
 	unsigned char *data = urb->transfer_buffer;
 	int i;
@@ -608,7 +608,7 @@ exit:
 
 static void keyspan_pda_write_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct keyspan_pda_private *priv;
 
 	port->write_urb_busy = 0;
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index b3ac045ab408..b395ac759888 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -567,7 +567,7 @@ exit:
 
 static void klsi_105_write_bulk_callback ( struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int status = urb->status;
 
 	dbg("%s - port %d", __func__, port->number);
@@ -628,7 +628,7 @@ static int klsi_105_write_room (struct usb_serial_port *port)
 
 static void klsi_105_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct klsi_105_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index e25c0c2791eb..5fc2cef30e39 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -514,7 +514,7 @@ static void mct_u232_close (struct usb_serial_port *port, struct file *filp)
 
 static void mct_u232_read_int_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct mct_u232_private *priv = usb_get_serial_port_data(port);
 	struct usb_serial *serial = port->serial;
 	struct tty_struct *tty;
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 7823222570b6..6bcb82d3911a 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -449,7 +449,7 @@ static void mos7840_control_callback(struct urb *urb)
 	int result = 0;
 	int status = urb->status;
 
-	mos7840_port = (struct moschip_port *)urb->context;
+	mos7840_port = urb->context;
 
 	switch (status) {
 	case 0:
@@ -554,7 +554,7 @@ static void mos7840_interrupt_callback(struct urb *urb)
 	length = urb->actual_length;
 	data = urb->transfer_buffer;
 
-	serial = (struct usb_serial *)urb->context;
+	serial = urb->context;
 
 	/* Moschip get 5 bytes
 	 * Byte 1 IIR Port 1 (port.number is 0)
@@ -685,7 +685,7 @@ static void mos7840_bulk_in_callback(struct urb *urb)
 		return;
 	}
 
-	mos7840_port = (struct moschip_port *)urb->context;
+	mos7840_port = urb->context;
 	if (!mos7840_port) {
 		dbg("%s", "NULL mos7840_port pointer \n");
 		return;
@@ -752,7 +752,7 @@ static void mos7840_bulk_out_data_callback(struct urb *urb)
 	int status = urb->status;
 	int i;
 
-	mos7840_port = (struct moschip_port *)urb->context;
+	mos7840_port = urb->context;
 	spin_lock(&mos7840_port->pool_lock);
 	for (i = 0; i < NUM_URBS; i++) {
 		if (urb == mos7840_port->write_urb_pool[i]) {
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 10090cb52d31..7b7422f49478 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -194,7 +194,7 @@ static void omninet_close (struct usb_serial_port *port, struct file * filp)
 
 static void omninet_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port 	*port 	= (struct usb_serial_port *)urb->context;
+	struct usb_serial_port 	*port 	= urb->context;
 	unsigned char 		*data 	= urb->transfer_buffer;
 	struct omninet_header 	*header = (struct omninet_header *) &data[0];
 	int status = urb->status;
@@ -309,7 +309,7 @@ static int omninet_write_room (struct usb_serial_port *port)
 static void omninet_write_bulk_callback (struct urb *urb)
 {
 /*	struct omninet_header	*header = (struct omninet_header  *) urb->transfer_buffer; */
-	struct usb_serial_port 	*port   = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port 	*port   =  urb->context;
 	int status = urb->status;
 
 	dbg("%s - port %0x\n", __func__, port->number);
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index a83892627d66..e4be2d442b1e 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -545,7 +545,7 @@ static void option_indat_callback(struct urb *urb)
 	dbg("%s: %p", __func__, urb);
 
 	endpoint = usb_pipeendpoint(urb->pipe);
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 
 	if (status) {
 		dbg("%s: nonzero status: %d on endpoint %02x.",
@@ -579,7 +579,7 @@ static void option_outdat_callback(struct urb *urb)
 
 	dbg("%s", __func__);
 
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 
 	usb_serial_port_softint(port);
 
@@ -597,7 +597,7 @@ static void option_instat_callback(struct urb *urb)
 {
 	int err;
 	int status = urb->status;
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	struct option_port_private *portdata = usb_get_serial_port_data(port);
 	struct usb_serial *serial = port->serial;
 
diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c
index 87f33e06301c..d92bb6501c84 100644
--- a/drivers/usb/serial/oti6858.c
+++ b/drivers/usb/serial/oti6858.c
@@ -871,7 +871,7 @@ static void oti6858_shutdown(struct usb_serial *serial)
 
 static void oti6858_read_int_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	struct oti6858_private *priv = usb_get_serial_port_data(port);
 	int transient = 0, can_recv = 0, resubmit = 1;
 	int status = urb->status;
@@ -985,7 +985,7 @@ static void oti6858_read_int_callback(struct urb *urb)
 
 static void oti6858_read_bulk_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	struct oti6858_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
@@ -1038,7 +1038,7 @@ static void oti6858_read_bulk_callback(struct urb *urb)
 
 static void oti6858_write_bulk_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	struct oti6858_private *priv = usb_get_serial_port_data(port);
 	int status = urb->status;
 	int result;
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index c60930ec9341..c605fb68f807 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -945,7 +945,7 @@ static void pl2303_update_line_status(struct usb_serial_port *port,
 
 static void pl2303_read_int_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	unsigned int actual_length = urb->actual_length;
 	int status = urb->status;
@@ -985,7 +985,7 @@ exit:
 
 static void pl2303_read_bulk_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	struct pl2303_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
@@ -1068,7 +1068,7 @@ static void pl2303_read_bulk_callback(struct urb *urb)
 
 static void pl2303_write_bulk_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	struct pl2303_private *priv = usb_get_serial_port_data(port);
 	int result;
 	int status = urb->status;
diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c
index e6acac49a9c8..94bddf06ea4f 100644
--- a/drivers/usb/serial/safe_serial.c
+++ b/drivers/usb/serial/safe_serial.c
@@ -195,7 +195,7 @@ static __u16 __inline__ fcs_compute10 (unsigned char *sp, int len, __u16 fcs)
 
 static void safe_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	unsigned char length = urb->actual_length;
 	int result;
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 23188873eb07..29074c1ba22b 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -457,7 +457,7 @@ static void sierra_indat_callback(struct urb *urb)
 	dbg("%s: %p", __func__, urb);
 
 	endpoint = usb_pipeendpoint(urb->pipe);
-	port = (struct usb_serial_port *) urb->context;
+	port =  urb->context;
 
 	if (status) {
 		dbg("%s: nonzero status: %d on endpoint %02x.",
@@ -487,7 +487,7 @@ static void sierra_instat_callback(struct urb *urb)
 {
 	int err;
 	int status = urb->status;
-	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	struct usb_serial_port *port =  urb->context;
 	struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 	struct usb_serial *serial = port->serial;
 
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index e0b1564de900..a1c8aef01417 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -1098,7 +1098,7 @@ static void ti_break(struct usb_serial_port *port, int break_state)
 
 static void ti_interrupt_callback(struct urb *urb)
 {
-	struct ti_device *tdev = (struct ti_device *)urb->context;
+	struct ti_device *tdev = urb->context;
 	struct usb_serial_port *port;
 	struct usb_serial *serial = tdev->td_serial;
 	struct ti_port *tport;
@@ -1181,7 +1181,7 @@ exit:
 
 static void ti_bulk_in_callback(struct urb *urb)
 {
-	struct ti_port *tport = (struct ti_port *)urb->context;
+	struct ti_port *tport = urb->context;
 	struct usb_serial_port *port = tport->tp_port;
 	struct device *dev = &urb->dev->dev;
 	int status = urb->status;
@@ -1247,7 +1247,7 @@ exit:
 
 static void ti_bulk_out_callback(struct urb *urb)
 {
-	struct ti_port *tport = (struct ti_port *)urb->context;
+	struct ti_port *tport = urb->context;
 	struct usb_serial_port *port = tport->tp_port;
 	struct device *dev = &urb->dev->dev;
 	int status = urb->status;
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index a100a52a376e..5fc20122145f 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -478,7 +478,7 @@ static int visor_chars_in_buffer (struct usb_serial_port *port)
 
 static void visor_write_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct visor_private *priv = usb_get_serial_port_data(port);
 	int status = urb->status;
 	unsigned long flags;
@@ -502,7 +502,7 @@ static void visor_write_bulk_callback (struct urb *urb)
 
 static void visor_read_bulk_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct visor_private *priv = usb_get_serial_port_data(port);
 	unsigned char *data = urb->transfer_buffer;
 	int status = urb->status;
@@ -553,7 +553,7 @@ static void visor_read_bulk_callback (struct urb *urb)
 
 static void visor_read_int_callback (struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int status = urb->status;
 	int result;
 
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 6926a81a0ccd..e96bf8663ffc 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -965,7 +965,7 @@ static void command_port_write_callback(struct urb *urb)
 
 static void command_port_read_callback(struct urb *urb)
 {
-	struct usb_serial_port *command_port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *command_port = urb->context;
 	struct whiteheat_command_private *command_info;
 	int status = urb->status;
 	unsigned char *data = urb->transfer_buffer;
@@ -1015,7 +1015,7 @@ static void command_port_read_callback(struct urb *urb)
 
 static void whiteheat_read_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct whiteheat_urb_wrap *wrap;
 	unsigned char *data = urb->transfer_buffer;
 	struct whiteheat_private *info = usb_get_serial_port_data(port);
@@ -1059,7 +1059,7 @@ static void whiteheat_read_callback(struct urb *urb)
 
 static void whiteheat_write_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct whiteheat_private *info = usb_get_serial_port_data(port);
 	struct whiteheat_urb_wrap *wrap;
 	int status = urb->status;