This is a note to let you know that I've just added the patch titled
xhci: Add Etron XHCI_TRUST_TX_LENGTH quirk.
to the 3.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xhci-add-etron-xhci_trust_tx_length-quirk.patch
and it can be found in the queue-3.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 5cb7df2b2d3afee7638b3ef23a5bcb89c6f07bd9 Mon Sep 17 00:00:00 2001
From: Sarah Sharp <[email protected]>
Date: Mon, 2 Jul 2012 13:36:23 -0700
Subject: xhci: Add Etron XHCI_TRUST_TX_LENGTH quirk.
From: Sarah Sharp <[email protected]>
commit 5cb7df2b2d3afee7638b3ef23a5bcb89c6f07bd9 upstream.
Gary reports that with recent kernels, he notices more xHCI driver
warnings:
xhci_hcd 0000:03:00.0: WARN Successful completion on short TX: needs
XHCI_TRUST_TX_LENGTH quirk?
We think his Etron xHCI host controller may have the same buggy behavior
as the Fresco Logic xHCI host. When a short transfer is received, the
host will mark the transfer as successfully completed when it should be
marking it with a short completion.
Fix this by turning on the XHCI_TRUST_TX_LENGTH quirk when the Etron
host is discovered. Note that Gary has revision 1, but if Etron fixes
this bug in future revisions, the quirk will have no effect.
This patch should be backported to kernels as old as 2.6.36, that
contain a backported version of commit
1530bbc6272d9da1e39ef8e06190d42c13a02733 "xhci: Add new short TX quirk
for Fresco Logic host."
Signed-off-by: Sarah Sharp <[email protected]>
Reported-by: Gary E. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/host/xhci-pci.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -99,6 +99,7 @@ static void xhci_pci_quirks(struct devic
pdev->device == PCI_DEVICE_ID_ASROCK_P67) {
xhci->quirks |= XHCI_RESET_ON_RESUME;
xhci_dbg(xhci, "QUIRK: Resetting on resume\n");
+ xhci->quirks |= XHCI_TRUST_TX_LENGTH;
}
if (pdev->vendor == PCI_VENDOR_ID_VIA)
xhci->quirks |= XHCI_RESET_ON_RESUME;
Patches currently in stable-queue which might be from
[email protected] are
queue-3.5/xhci-increase-reset-timeout-for-renesas-720201-host.patch
queue-3.5/xhci-add-etron-xhci_trust_tx_length-quirk.patch
queue-3.5/xhci-switch-ppt-ports-to-ehci-on-shutdown.patch
queue-3.5/xhci-fix-bug-after-deq-ptr-set-to-link-trb.patch
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