[3.16.y-ckt stable] Patch "xhci: Add broken-streams quirk for Fresco Logic FL1000G xhci controllers" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    xhci: Add broken-streams quirk for Fresco Logic FL1000G xhci controllers

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt5.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 7f68494e1c5c72fa1ffbf5bc6640775baace4a48 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede at redhat.com>
Date: Fri, 5 Dec 2014 11:11:28 +0100
Subject: xhci: Add broken-streams quirk for Fresco Logic FL1000G xhci
 controllers
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

commit 7f5c4d631aed243ca89c6673427954210b1628ec upstream.

Streams do not work reliabe on Fresco Logic FL1000G xhci controllers,
trying to use them results in errors like this:

21:37:33 kernel: xhci_hcd 0000:04:00.0: ERROR Transfer event for disabled endpoint or incorrect stream ring
21:37:33 kernel: xhci_hcd 0000:04:00.0: @00000000368b3570 9067b000 00000000 05000000 01078001
21:37:33 kernel: xhci_hcd 0000:04:00.0: ERROR Transfer event for disabled endpoint or incorrect stream ring
21:37:33 kernel: xhci_hcd 0000:04:00.0: @00000000368b3580 9067b400 00000000 05000000 01038001

As always I've ordered a pci-e addon card with a Fresco Logic controller for
myself to see if I can come up with a better fix then the big hammer, in
the mean time this will make uas devices work again (in usb-storage mode)
for FL1000G users.

Reported-by: Marcin Zajączkowski <mszpak at wp.pl>
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/usb/host/xhci-pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index e614d1831e79..fd8c8e669cac 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -80,6 +80,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 				"must be suspended extra slowly",
 				pdev->revision);
 		}
+		if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK)
+			xhci->quirks |= XHCI_BROKEN_STREAMS;
 		/* Fresco Logic confirms: all revisions of this chip do not
 		 * support MSI, even though some of them claim to in their PCI
 		 * capabilities.
--
2.1.4