From 867c902e07d5677e2a5b54c0435e589513abde48 Mon Sep 17 00:00:00 2001
From: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Date: Mon, 2 Apr 2012 14:36:22 +0900
Subject: [PATCH] pch_uart: Fix MSI setting issue
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 | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index e825460478bef..afa060fde110a 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -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);