pch_uart: Fix MSI setting issue
authorTomoya MORINAGA <tomoya.rohm@gmail.com>
Mon, 2 Apr 2012 05:36:22 +0000 (14:36 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 9 Apr 2012 17:43:26 +0000 (10:43 -0700)
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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/pch_uart.c

index e825460..afa060f 100644 (file)
@@ -1655,6 +1655,7 @@ 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);