[ 39/75] pch_uart: Fix MSI setting issue

From: Greg KH
Date: Thu Apr 19 2012 - 17:13:50 EST

3.3-stable review patch. If anyone has any objections, please let me know.


From: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx>

commit 867c902e07d5677e2a5b54c0435e589513abde48 upstream.

The following patch (MSI setting) is not enough.

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

pch_uart: Add MSI support

Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

To enable MSI mode, PCI bus-mastering must be enabled.
This patch enables the setting.

cc: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/tty/serial/pch_uart.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1586,6 +1586,7 @@ static struct eg20t_port *pch_uart_init_

+ pci_set_master(pdev);

iobase = pci_resource_start(pdev, 0);
mapbase = pci_resource_start(pdev, 1);

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