staging: rtl8712: recv_linux: Remove unused function

Remove the function r8712_os_read_port() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/recv_linux.c

@@ -137,20 +137,6 @@ void r8712_recv_indicatepkt(struct _adapter *padapter,
 	 precvpriv->rx_drop++;
 }
 
-void r8712_os_read_port(struct _adapter *padapter, struct recv_buf *precvbuf)
-{
-	struct recv_priv *precvpriv = &padapter->recvpriv;
-
-	precvbuf->ref_cnt--;
-	/*free skb in recv_buf*/
-	dev_kfree_skb_any(precvbuf->pskb);
-	precvbuf->pskb = NULL;
-	precvbuf->reuse = false;
-	if (!precvbuf->irp_pending)
-		r8712_read_port(padapter, precvpriv->ff_hwaddr, 0,
-			 (unsigned char *)precvbuf);
-}
-
 static void _r8712_reordering_ctrl_timeout_handler (void *FunctionContext)
 {
 	struct recv_reorder_ctrl *preorder_ctrl =

drivers/staging/rtl8712/recv_osdep.h

@@ -46,7 +46,6 @@ int r8712_os_recvbuf_resource_alloc(struct _adapter *padapter,
 				    struct recv_buf *precvbuf);
 int r8712_os_recvbuf_resource_free(struct _adapter *padapter,
 				   struct recv_buf *precvbuf);
-void r8712_os_read_port(struct _adapter *padapter, struct recv_buf *precvbuf);
 void r8712_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl);
 
 #endif