Re: [PATCH 4/4] usb: xhci: rework root port wake bits if controller isn't allowed to wakeup

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Nov 17, 2014 at 02:57:05PM +0000, David Laight wrote:
> From: Felipe Balbi
> > 
> > On Fri, Nov 14, 2014 at 07:23:52PM +0200, Mathias Nyman wrote:
> > > From: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> > >
> > > When system is being suspended, if host device is not allowed to do wakeup,
> > > xhci_suspend() needs to clear all root port wake on bits. Otherwise, some
> > > platforms may generate spurious wakeup, even if PCI PME# is disabled.
> > >
> > > The initial commit ff8cbf250b44 ("xhci: clear root port wake on bits"),
> > > which also got into stable, turned out to not work correctly and had to
> > > be reverted, and is now rewritten.
> > >
> > > Cc: stable <stable@xxxxxxxxxxxxxxx>
> > 
> > how far back ? Apparently, also, 2.6.37+
> 
> Isn't xhci completely broken before some relatively recent kernel?

Really?  It actually seems to work _better_ for most people on older
kernels...

> ISTR a massive USB/xhci patch that a lot of things depend on.
> Is it worth backporting to kernels without that patch?

What exact patch are you referring to?

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]