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Message-Id: <20110928220139.340466719@clark.kroah.org>
Date:	Wed, 28 Sep 2011 15:01:37 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Ming Lei <ming.lei@...onical.com>,
	Stefan Richter <stefanr@...6.in-berlin.de>
Subject: [133/244] firewire: ohci: add no MSI quirk for O2Micro controller

3.0-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Ming Lei <ming.lei@...onical.com>

commit f39aa30d7741f40ad964341e9243dbbd7f8ff057 upstream.

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@...onical.com>
Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/firewire/ohci.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -291,6 +291,9 @@ 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},
 


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