diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index ae28250b0be0ee15be5df8b1633d1522760f640c..35cb9af893babe8e76096a9fc525c5e4710b6426 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1426,6 +1426,8 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
 		goto init_port_hal_free;
 	}
 
+	pci_enable_msi(pdev);
+
 	iobase = pci_resource_start(pdev, 0);
 	mapbase = pci_resource_start(pdev, 1);
 	priv->mapbase = mapbase;
@@ -1482,6 +1484,8 @@ static void pch_uart_pci_remove(struct pci_dev *pdev)
 	struct eg20t_port *priv;
 
 	priv = (struct eg20t_port *)pci_get_drvdata(pdev);
+
+	pci_disable_msi(pdev);
 	pch_uart_exit_port(priv);
 	pci_disable_device(pdev);
 	kfree(priv);
@@ -1565,6 +1569,7 @@ static int __devinit pch_uart_pci_probe(struct pci_dev *pdev,
 	return ret;
 
 probe_disable_device:
+	pci_disable_msi(pdev);
 	pci_disable_device(pdev);
 probe_error:
 	return ret;