tty: serial: imx: Add return value check for platform_get_irq()

RX irq is required, so add return value check for platform_get_irq().

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Link: https://lore.kernel.org/r/1589180996-618-1-git-send-email-Anson.Huang@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index f4d68109bc8bae51954ae98ac5d6bcdbfaddc189..f4023d9d8e7a172217b1037dccfa613b5edae2af 100644 (file)
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2252,6 +2252,8 @@ static int imx_uart_probe(struct platform_device *pdev)
                return PTR_ERR(base);
 
        rxirq = platform_get_irq(pdev, 0);
+       if (rxirq < 0)
+               return rxirq;
        txirq = platform_get_irq_optional(pdev, 1);
        rtsirq = platform_get_irq_optional(pdev, 2);