linux-kernel - Re: [PATCH v16 5/7] usb: Specify dependencies on USB_XHCI

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Message-ID: <YZPzUmwWuuiwqJ2b@google.com>
Date:   Tue, 16 Nov 2021 10:07:14 -0800
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Felipe Balbi <balbi@...nel.org>, devicetree@...r.kernel.org,
        Peter Chen <peter.chen@...nel.org>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        Bastien Nocera <hadess@...ess.net>,
        Ravi Chandra Sadineni <ravisadineni@...omium.org>,
        Michal Simek <michal.simek@...inx.com>,
        Roger Quadros <rogerq@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Andrew Lunn <andrew@...n.ch>,
        Aswath Govindraju <a-govindraju@...com>,
        Dmitry Osipenko <digetx@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Pawel Laszczak <pawell@...ence.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Tony Lindgren <tony@...mide.com>,
        linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v16 5/7] usb: Specify dependencies on USB_XHCI_PLATFORM
 with 'depends on'

On Thu, Nov 11, 2021 at 03:48:06PM -0800, Doug Anderson wrote:
> Hi,
> 
> On Fri, Aug 13, 2021 at 12:52 PM Matthias Kaehlcke <mka@...omium.org> wrote:
> >
> >  config USB_DWC3
> >         tristate "DesignWare USB3 DRD Core Support"
> > -       depends on (USB || USB_GADGET) && HAS_DMA
> > -       select USB_XHCI_PLATFORM if USB_XHCI_HCD
> > +       depends on ((USB && USB_XHCI_PLATFORM) || USB_GADGET) && HAS_DMA
> 
> Technically you don't need the "USB &&", right? Since
> USB_XHCI_PLATFORM is defined in 'usb/host/Kconfig' and that's only
> even included if USB is defined. So it can be just:
> 
> depends on (USB_XHCI_PLATFORM || USB_GADGET) && HAS_DMA

True, the dependency on USB isn't strictly needed.

> That's not terribly important, though, so:
> 
> Reviewed-by: Douglas Anderson <dianders@...omium.org>

Thanks!