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Message-ID: <YemBkNhvfPukCB6C@kroah.com>
Date:   Thu, 20 Jan 2022 16:36:48 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Christoph Hellwig <hch@...radead.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,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Peter Chen <peter.chen@...nel.org>,
        linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Roger Quadros <rogerq@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        linux-usb@...r.kernel.org, Bastien Nocera <hadess@...ess.net>,
        Ravi Chandra Sadineni <ravisadineni@...omium.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH v20 2/5] driver core: Export device_is_bound()

On Thu, Jan 20, 2022 at 07:25:04AM -0800, Matthias Kaehlcke wrote:
> On Thu, Jan 20, 2022 at 08:45:24AM +0100, Greg Kroah-Hartman wrote:
> > On Wed, Jan 19, 2022 at 11:29:18PM -0800, Christoph Hellwig wrote:
> > > On Wed, Jan 19, 2022 at 12:43:42PM -0800, Matthias Kaehlcke wrote:
> > > > Export device_is_bound() to enable its use by drivers that are
> > > > built as modules.
> > > > 
> > > > Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> > > > Reviewed-by: Douglas Anderson <dianders@...omium.org>
> > > > Reviewed-by: Stephen Boyd <swboyd@...omium.org>
> > > 
> > > Didn't Greg clearly NAK this the last few times it came up?
> > 
> > Yes, which is why this series is _WAY_ on the bottom of my list for
> > reviews...
> 
> I wasn't aware of that prior discussion, it would have helped to know
> that this is a major concern for you ...

Sorry, that was on a different thread for a different feature, I thought
it was this one.  Too many reviews at times.

> 
> If using device_is_bound() is a no-go then _find_onboard_hub() of
> the onboard_hub driver could make it's decision based on the
> presence (or absence) of drvdata, which is what the function ultimately
> returns.

That suffers from the same problem.  I'll take a look at this later
after -rc1 is out and see what can be done here...

thanks,

greg k-h

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