linux-kernel - [PATCH] serial: atmel: fix compiler warning on address cast

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Date:	Mon,  5 Oct 2015 18:00:52 +0100
From:	Andre Przywara <andre.przywara@....com>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.com>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] serial: atmel: fix compiler warning on address cast

Turning on KVM and LPAE support on top of a multi_v7_defconfig will
produce a compiler warning in the Atmel serial driver:
drivers/tty/serial/atmel_serial.c: In function 'atmel_verify_port':
drivers/tty/serial/atmel_serial.c:2299:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  if ((void *)port->mapbase != ser->iomem_base)
      ^

Fix that by using the cast on the right hand side instead, as similar
code already does in other drivers.

Signed-off-by: Andre Przywara <andre.przywara@....com>
---
 drivers/tty/serial/atmel_serial.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index cd30a45..28039ce 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -2296,7 +2296,7 @@ static int atmel_verify_port(struct uart_port *port, struct serial_struct *ser)
 		ret = -EINVAL;
 	if (port->uartclk / 16 != ser->baud_base)
 		ret = -EINVAL;
-	if ((void *)port->mapbase != ser->iomem_base)
+	if (port->mapbase != (unsigned long)ser->iomem_base)
 		ret = -EINVAL;
 	if (port->iobase != ser->port)
 		ret = -EINVAL;
-- 
2.5.1

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