pch_uart: Fix MSI setting issue

commit 867c902e07d5677e2a5b54c0435e589513abde48 upstream.

The following patch (MSI setting) is not enough.

commit e463595fd9c752fa4bf06b47df93ef9ade3c7cf0
Author: Alexander Stein <alexander.stein@systec-electronic.com>
Date:   Mon Jul 4 08:58:31 2011 +0200

    pch_uart: Add MSI support

    Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
To enable MSI mode, PCI bus-mastering must be enabled.
This patch enables the setting.

cc: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index d6aba8c..da776a0 100644 (file)
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1438,6 +1438,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
        }
 
        pci_enable_msi(pdev);
+       pci_set_master(pdev);
 
        iobase = pci_resource_start(pdev, 0);
        mapbase = pci_resource_start(pdev, 1);