Re: [PATCH 1/1] xhci: clear root port wake on bits if controller isn't wake-up capable

[baolu]

On 06/11/2014 11:26 PM, Greg Kroah-Hartman wrote:
> On Wed, Jun 11, 2014 at 06:25:20AM +0800, Lu Baolu wrote:
> > When the xHCI PCI host is suspended, if do_wakeup is false in xhci_pci_suspend,
> > xhci_bus_suspend needs to clear all root port wake on bits. Otherwise some Intel
> > platform may get a spurious wakeup, even if PCI PME# is disabled.
> >
> > http://marc.info/?l=linux-usb&m=138194006009255&w=2
> >
> > Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> > ---
> >   drivers/usb/host/xhci-hub.c | 5 ++++-
> >   1 file changed, 4 insertions(+), 1 deletion(-)
> Should this also be a stable kernel patch?  If so, how far back?
Yes.

This patch should be back-ported to kernels as old as 2.6.37, that
contains the commit 9777e3ce907d4cb5a513902a87ecd03b52499569
"USB: xHCI: bus power management implementation".

Thanks,
-baolu
> thanks,
>
> greg k-h
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/