linux-kernel - [PATCH 3.18 27/32] usb: xhci: ASMedia ASM1042A chipset need shorts TX quirk

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Date:   Mon, 19 Jun 2017 23:21:11 +0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Corentin Labbe <clabbe.montjoie@...il.com>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>
Subject: [PATCH 3.18 27/32] usb: xhci: ASMedia ASM1042A chipset need shorts TX quirk

3.18-stable review patch.  If anyone has any objections, please let me know.

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

From: Corentin Labbe <clabbe.montjoie@...il.com>

commit d2f48f05cd2a2a0a708fbfa45f1a00a87660d937 upstream.

When plugging an USB webcam I see the following message:
[106385.615559] xhci_hcd 0000:04:00.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[106390.583860] handle_tx_event: 913 callbacks suppressed

With this patch applied, I get no more printing of this message.

Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/host/xhci-pci.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -185,6 +185,9 @@ static void xhci_pci_quirks(struct devic
 	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 			pdev->device == 0x1042)
 		xhci->quirks |= XHCI_BROKEN_STREAMS;
+	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
+			pdev->device == 0x1142)
+		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 
 	if (xhci->quirks & XHCI_RESET_ON_RESUME)
 		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,