Re: 3.20-rc0 breaks nfsroot over usb

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On Friday 27 February 2015 07:38:09 Tony Lindgren wrote:
> * Aaro Koskinen <aaro.koskinen@xxxxxx> [150226 15:06]:
> > Hi,
> > 
> > On Thu, Feb 26, 2015 at 11:19:50PM +0100, Pavel Machek wrote:
> > > Ok, it seems that new config dependencies broke my kconfig. These will
> > > not be enabled if you just to make oldconfig; you want to make sure
> > > they are on.
> > > 
> > >  OMAP2430 and onwards (USB_MUSB_OMAP2PLUS) [N/m/y] (NEW)
> > > TWL4030 USB Transceiver Driver (TWL4030_USB) [N/m/y/?] (NEW)
> > 
> > Yes, also other users have reported "USB breakage" with 4.0-rc1 on N900
> > etc caused by this.
> > 
> > Commit fbba7db3990cb707ff91cd6507d53a0a730afe97 (usb: musb:
> > add omap-control dependency) changed USB_MUSB_OMAP2PLUS to depend
> > on OMAP_CONTROL_PHY but that seems to be wrong at least for OMAP3.
> > omap_control_phy.h provides dummy functions when it's not enabled.
> > So there should be no dependency.

The problem I fixed was a link error when USB_MUSB_OMAP2PLUS
is built-in but OMAP_CONTROL_PHY is a loadable module.

> I guess the solution would be to make drivers/phy handle whatever
> omap_control_usb_set_mode is doing in a generic way.

I'm very sorry about the breakage in a patch that is marked for
backports.

Please accept my apology and the workaround patch in the
follow-up mail.

	Arnd
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