[ARM] serial: s3c2410: platform_get_irq() may return signed unnoticed

port->irq is unsigned, platform_get_irq() may return signed unnoticed

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index 4ffa2585429a..da5a02cb4f63 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -1022,6 +1022,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
         struct uart_port *port = &ourport->port;
         struct s3c2410_uartcfg *cfg;
         struct resource *res;
+        int ret;
 
         dbg("s3c24xx_serial_init_port: port=%p, platdev=%p\n", port, platdev);
 
@@ -1064,9 +1065,11 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
 
         port->mapbase   = res->start;
         port->membase   = S3C24XX_VA_UART + (res->start - S3C24XX_PA_UART);
-        port->irq       = platform_get_irq(platdev, 0);
-        if (port->irq < 0)
+        ret = platform_get_irq(platdev, 0);
+        if (ret < 0)
                 port->irq = 0;
+        else
+                port->irq = ret;
 
         ourport->clk    = clk_get(&platdev->dev, "uart");