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 <[email protected]>
> > Cc: <[email protected]> # 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
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
