The patch below does not apply to the 3.0-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

>From 457a4f61f9bfc3ae76e5b49f30f25d86bb696f67 Mon Sep 17 00:00:00 2001
From: Elric Fu <[email protected]>
Date: Thu, 29 Mar 2012 15:47:50 +0800
Subject: [PATCH] xHCI: add XHCI_RESET_ON_RESUME quirk for VIA xHCI host

The suspend operation of VIA xHCI host have some issues and
hibernate operation works fine, so The XHCI_RESET_ON_RESUME
quirk is added for it.

This patch should base on "xHCI: Don't write zeroed pointer
to xHC registers" that is released by Sarah. Otherwise, the
host system error will ocurr in the hibernate operation
process.

This should be backported to stable kernels as old as 2.6.37,
that contain the commit c877b3b2ad5cb9d4fe523c5496185cc328ff3ae9
"xhci: Add reset on resume quirk for asrock p67 host".

Signed-off-by: Elric Fu <[email protected]>
Signed-off-by: Sarah Sharp <[email protected]>
Cc: [email protected]

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 0d7b851..7a856a7 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -95,6 +95,8 @@ static void xhci_pci_quirks(struct device *dev, struct 
xhci_hcd *xhci)
                xhci->quirks |= XHCI_RESET_ON_RESUME;
                xhci_dbg(xhci, "QUIRK: Resetting on resume\n");
        }
+       if (pdev->vendor == PCI_VENDOR_ID_VIA)
+               xhci->quirks |= XHCI_RESET_ON_RESUME;
 }
 
 /* called during probe() after chip reset completes */

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