TTY: serial, handle platform_get_irq retval properly

[cascardo/linux.git] / drivers / tty / serial / fsl_lpuart.c

diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 3d79003..7f95f78 100644 (file)
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1830,7 +1830,13 @@ static int lpuart_probe(struct platform_device *pdev)
        sport->port.dev = &pdev->dev;
        sport->port.type = PORT_LPUART;
        sport->port.iotype = UPIO_MEM;
-       sport->port.irq = platform_get_irq(pdev, 0);
+       ret = platform_get_irq(pdev, 0);
+       if (ret < 0) {
+               dev_err(&pdev->dev, "cannot obtain irq\n");
+               return ret;
+       }
+       sport->port.irq = ret;
+
        if (sport->lpuart32)
                sport->port.ops = &lpuart32_pops;
        else