diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
index ac2a34ecfd66..fe7a36fbeef9 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -174,7 +174,7 @@ static void qrk_serial_setup_dma(struct lpss8250 *lpss, struct uart_port *port)
 	int ret;
 
 	chip->dev = &pdev->dev;
-	chip->irq = pdev->irq;
+	chip->irq = pci_irq_vector(pdev, 0);
 	chip->regs = pci_ioremap_bar(pdev, 1);
 	chip->pdata = &qrk_serial_dma_pdata;