serial: fix test of unsigned

The variables were unsigned so the tests did not work.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/serial/timbuart.c b/drivers/serial/timbuart.c
index 34b31da01d09..7bf10264a6ac 100644
--- a/drivers/serial/timbuart.c
+++ b/drivers/serial/timbuart.c
@@ -421,7 +421,7 @@ static struct uart_driver timbuart_driver = {
 
 static int timbuart_probe(struct platform_device *dev)
 {
-        int err;
+        int err, irq;
         struct timbuart_port *uart;
         struct resource *iomem;
 
@@ -453,11 +453,12 @@ static int timbuart_probe(struct platform_device *dev)
         uart->port.mapbase = iomem->start;
         uart->port.membase = NULL;
 
-        uart->port.irq = platform_get_irq(dev, 0);
-        if (uart->port.irq < 0) {
+        irq = platform_get_irq(dev, 0);
+        if (irq < 0) {
                 err = -EINVAL;
                 goto err_register;
         }
+        uart->port.irq = irq;
 
         tasklet_init(&uart->tasklet, timbuart_tasklet, (unsigned long)uart);