From 31980022c20192e1ca634d69c9506a7a91e75629 Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@canonical.com>
Date: Wed, 31 Aug 2011 10:45:46 +0800
Subject: [PATCH] firewire: ohci: add no MSI quirk for O2Micro controller
This fixes https://bugs.launchpad.net/ubuntu/+source/linux/+bug/801719 .
An O2Micro PCI Express FireWire controller,
"FireWire (IEEE 1394) [0c00]: O2 Micro, Inc. Device [1217:11f7] (rev 05)"
which is a combination device together with an SDHCI controller and some
sort of storage controller, misses SBP-2 status writes from an attached
FireWire HDD. This problem goes away if MSI is disabled for this
FireWire controller.
The device reportedly does not require QUIRK_CYCLE_TIMER.
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (amended changelog)
Cc: <stable@kernel.org>
---
drivers/firewire/ohci.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 57cd3a406edf3..fd7170a9ad2cc 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -290,6 +290,9 @@ static const struct {
{PCI_VENDOR_ID_NEC, PCI_ANY_ID, PCI_ANY_ID,
QUIRK_CYCLE_TIMER},
+ {PCI_VENDOR_ID_O2, PCI_ANY_ID, PCI_ANY_ID,
+ QUIRK_NO_MSI},
+
{PCI_VENDOR_ID_RICOH, PCI_ANY_ID, PCI_ANY_ID,
QUIRK_CYCLE_TIMER},
--
2.39.5