staging:r8188eu: change type of the precv_buf member of recv_priv structure

To avoid unnecessary typecast.
To use compiler type checking.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c

@@ -46,10 +46,10 @@ int	rtw_hal_init_recv_priv(struct adapter *padapter)
 		goto exit;
 	}
 
-	precvpriv->precv_buf = precvpriv->pallocated_recv_buf;
+	precvpriv->precv_buf = (struct recv_buf *)precvpriv->pallocated_recv_buf;
 
 
-	precvbuf = (struct recv_buf *)precvpriv->precv_buf;
+	precvbuf = precvpriv->precv_buf;
 
 	for (i = 0; i < NR_RECVBUFF; i++) {
 		res = rtw_os_recvbuf_resource_alloc(padapter, precvbuf);
@@ -86,7 +86,7 @@ void rtw_hal_free_recv_priv(struct adapter *padapter)
 	struct recv_buf	*precvbuf;
 	struct recv_priv	*precvpriv = &padapter->recvpriv;
 
-	precvbuf = (struct recv_buf *)precvpriv->precv_buf;
+	precvbuf = precvpriv->precv_buf;
 
 	for (i = 0; i < NR_RECVBUFF; i++) {
 		usb_free_urb(precvbuf->purb);

drivers/staging/rtl8188eu/hal/usb_halinit.c

@@ -987,7 +987,7 @@ u32 rtw_hal_inirp_init(struct adapter *Adapter)
 		 ("===> usb_inirp_init\n"));
 
 	/* issue Rx irp to receive data */
-	precvbuf = (struct recv_buf *)precvpriv->precv_buf;
+	precvbuf = precvpriv->precv_buf;
 	for (i = 0; i < NR_RECVBUFF; i++) {
 		if (usb_read_port(Adapter, RECV_BULK_IN_ADDR, precvbuf) == false) {
 			RT_TRACE(_module_hci_hal_init_c_, _drv_err_, ("usb_rx_init: usb_read_port error\n"));

drivers/staging/rtl8188eu/include/rtw_recv.h

@@ -181,7 +181,7 @@ struct recv_priv {
 	struct sk_buff_head free_recv_skb_queue;
 	struct sk_buff_head rx_skb_queue;
 	u8 *pallocated_recv_buf;
-	u8 *precv_buf;    /*  4 alignment */
+	struct recv_buf *precv_buf;    /*  4 alignment */
 	struct __queue free_recv_buf_queue;
 	/* For display the phy informatiom */
 	u8 is_signal_dbg;	/*  for debug */

drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c

@@ -521,7 +521,7 @@ void rtw_hal_inirp_deinit(struct adapter *padapter)
 	int i;
 	struct recv_buf *precvbuf;
 
-	precvbuf = (struct recv_buf *)padapter->recvpriv.precv_buf;
+	precvbuf = padapter->recvpriv.precv_buf;
 
 	DBG_88E("%s\n", __func__);