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>

diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index 01dfc0a..3212179 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1209,7 +1209,7 @@
 
 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 @@
 
 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;