Re: usb: dwc3: disable USB core PHY management

Johan Hovold
2022-09-06T12:30:39Z

On Tue, Sep 06, 2022 at 02:18:08PM +0200, Greg Kroah-Hartman wrote:
> On Tue, Sep 06, 2022 at 02:07:02PM +0200, Johan Hovold wrote:
> > From: Johan Hovold <johan+linaro@kernel.org>
> >
> > commit 6000b8d900cd5f52fbcd0776d0cc396e88c8c2ea upstream.
> >
> > The dwc3 driver manages its PHYs itself so the USB core PHY management
> > needs to be disabled.
> >
> > Use the struct xhci_plat_priv hack added by commits 46034a999c07 ("usb:
> > host: xhci-plat: add platform data support") and f768e718911e ("usb:
> > host: xhci-plat: add priv quirk for skip PHY initialization") to
> > propagate the setting for now.
> >
> > Fixes: 4e88d4c08301 ("usb: add a flag to skip PHY initialization to struct usb_hcd")
> > Fixes: 178a0bce05cb ("usb: core: hcd: integrate the PHY wrapper into the HCD core")
> > Tested-by: Matthias Kaehlcke <mka@chromium.org>
> > Cc: stable <stable@kernel.org>
> > Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
> > Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> > Link: https://lore.kernel.org/r/20220825131836.19769-1-johan+linaro@kernel.org
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > [ johan: adjust context to 5.15 ]
> > Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > ---
> > drivers/usb/dwc3/host.c | 10 ++++++++++
> > 1 file changed, 10 insertions(+)
>
> Breaks the build on 4.19.y :(

It's OK to not to backport this one.

Johan