[PATCH 4/7] serial: zs: use NULL as a pointer, not 0

[Jiri Slaby <jslaby@xxxxxxx>]

struct uart_port::membase is declared as a pointer. So it should be
initialized by NULL, not zero constant.

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
 drivers/tty/serial/zs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c
index 70969bf9d82c..5bc58591665a 100644
--- a/drivers/tty/serial/zs.c
+++ b/drivers/tty/serial/zs.c
@@ -981,7 +981,7 @@ static const char *zs_type(struct uart_port *uport)
 static void zs_release_port(struct uart_port *uport)
 {
 	iounmap(uport->membase);
-	uport->membase = 0;
+	uport->membase = NULL;
 	release_mem_region(uport->mapbase, ZS_CHAN_IO_SIZE);
 }
 
-- 
2.36.0