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>
---
drivers/tty/serial/pch_uart.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 5928877..ae8f848 100644
--- 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_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);
--
1.7.7.6
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