[PATCH] drivers/serial NULL noise removal

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c
index db8607e..f5051cf 100644
--- a/drivers/serial/uartlite.c
+++ b/drivers/serial/uartlite.c
@@ -256,7 +256,7 @@
 {
 	release_mem_region(port->mapbase, ULITE_REGION);
 	iounmap(port->membase);
-	port->membase = 0;
+	port->membase = NULL;
 }
 
 static int ulite_request_port(struct uart_port *port)
@@ -438,7 +438,7 @@
 	port->iotype	= UPIO_MEM;
 	port->iobase	= 1; /* mark port in use */
 	port->mapbase	= res->start;
-	port->membase	= 0;
+	port->membase	= NULL;
 	port->ops	= &ulite_ops;
 	port->irq	= res2->start;
 	port->flags	= UPF_BOOT_AUTOCONF;
@@ -462,7 +462,7 @@
 		uart_remove_one_port(&ulite_uart_driver, port);
 
 	/* mark port as free */
-	port->membase = 0;
+	port->membase = NULL;
 
 	return 0;
 }