On Wed, Feb 04, 2015 at 10:35:22AM +0100, Maxime Ripard wrote:
> Hi Mathias, Greg,
>
> On Mon, Jan 19, 2015 at 02:01:12PM +0100, Maxime Ripard wrote:
> > The commit 973747928514 ("usb: host: xhci-plat: add support for the Armada
> > 375/38x XHCI controllers") extended the xhci-plat driver to support the Armada
> > 375/38x SoCs, mostly by adding a quirk configuring the MBUS window.
> >
> > However, that quirk was run before the clock the controllers needs has been
> > enabled. This usually worked because the clock was first enabled by the
> > bootloader, and left as such until the driver is probe, where it tries to
> > access the MBUS configuration registers before enabling the clock.
> >
> > Things get messy when EPROBE_DEFER is involved during the probe, since as part
> > of its error path, the driver will rightfully disable the clock. When the
> > driver will be reprobed, it will retry to access the MBUS registers, but this
> > time with the clock disabled, which hangs forever.
> >
> > Fix this by running the quirks after the clock has been enabled by the driver.
> >
> > Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
> > Cc: <stable@xxxxxxxxxxxxxxx> # v3.16+
>
> Any chance for this to go in 3.19?
For 3.19? It's too late, I'm not sending anything else to Linus as 3.19
will be out in a few days.
thanks,
greg k-h
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