altera_uart: Don't use plain integer as NULL pointer

Fixes sparse warning.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>

diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c
index dfc1ecc..7212162 100644 (file)
--- a/drivers/serial/altera_uart.c
+++ b/drivers/serial/altera_uart.c
@@ -461,7 +461,7 @@ static int __init altera_uart_console_setup(struct console *co, char *options)
        if (co->index < 0 || co->index >= CONFIG_SERIAL_ALTERA_UART_MAXPORTS)
                return -EINVAL;
        port = &altera_uart_ports[co->index].port;
-       if (port->membase == 0)
+       if (!port->membase)
                return -ENODEV;
 
        if (options)