diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_dw.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 7db51781289e..f4cafca1a7da 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -523,7 +523,10 @@ static int dw8250_probe(struct platform_device *pdev) if (!regs) return dev_err_probe(dev, -EINVAL, "no registers defined\n"); - irq = platform_get_irq(pdev, 0); + irq = platform_get_irq_optional(pdev, 0); + /* no interrupt -> fall back to polling */ + if (irq == -ENXIO) + irq = 0; if (irq < 0) return irq; |