linux-kernel - [PATCH 3.16 284/328] xhci: Add missing CAS workaround for Intel Sunrise Point xHCI

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Date:   Sun, 09 Dec 2018 21:50:33 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Mathias Nyman" <mathias.nyman@...ux.intel.com>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Subject: [PATCH 3.16 284/328] xhci: Add missing CAS workaround for Intel
 Sunrise Point xHCI

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Mathias Nyman <mathias.nyman@...ux.intel.com>

commit ffe84e01bb1b38c7eb9c6b6da127a6c136d251df upstream.

The workaround for missing CAS bit is also needed for xHC on Intel
sunrisepoint PCH. For more details see:

Intel 100/c230 series PCH specification update Doc #332692-006 Errata #8

Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/host/xhci-pci.c | 2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -178,6 +178,8 @@ static void xhci_pci_quirks(struct devic
 	}
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 	    (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
+	     pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
+	     pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
 	     pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
 	     pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI))
 		xhci->quirks |= XHCI_MISSING_CAS;