This is a note to let you know that I've just added the patch titled

    USB: xhci: fix OS want to own HC

to the 3.0-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:
     usb-xhci-fix-os-want-to-own-hc.patch
and it can be found in the queue-3.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <sta...@kernel.org> know about it.


>From 6768458b17f9bf48a4c3a34e49b20344091b5f7e Mon Sep 17 00:00:00 2001
From: JiSheng Zhang <jszha...@gmail.com>
Date: Sat, 16 Jul 2011 11:04:19 +0800
Subject: USB: xhci: fix OS want to own HC

From: JiSheng Zhang <jszha...@gmail.com>

commit 6768458b17f9bf48a4c3a34e49b20344091b5f7e upstream.

Software should set XHCI_HC_OS_OWNED bit to request ownership of xHC.

This patch should be backported to kernels as far back as 2.6.31.

Signed-off-by: JiSheng Zhang <jszha...@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sh...@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>

---
 drivers/usb/host/pci-quirks.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -803,7 +803,7 @@ static void __devinit quirk_usb_handoff_
 
        /* If the BIOS owns the HC, signal that the OS wants it, and wait */
        if (val & XHCI_HC_BIOS_OWNED) {
-               writel(val & XHCI_HC_OS_OWNED, base + ext_cap_offset);
+               writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset);
 
                /* Wait for 5 seconds with 10 microsecond polling interval */
                timeout = handshake(base + ext_cap_offset, XHCI_HC_BIOS_OWNED,


Patches currently in stable-queue which might be from jszha...@gmail.com are

queue-3.0/usb-xhci-fix-os-want-to-own-hc.patch

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