linux-kernel - Re: [PATCH v5 0/6] driver core: Improve and cleanup driver_deferred_probe_check

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Message-ID: <20200304171252.GA1852336@kroah.com>
Date:   Wed, 4 Mar 2020 18:12:52 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     John Stultz <john.stultz@...aro.org>
Cc:     lkml <linux-kernel@...r.kernel.org>, Rob Herring <robh@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
        Todd Kjos <tkjos@...gle.com>,
        Saravana Kannan <saravanak@...gle.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Thierry Reding <treding@...dia.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v5 0/6] driver core: Improve and cleanup
 driver_deferred_probe_check_state()

On Tue, Feb 25, 2020 at 05:08:22AM +0000, John Stultz wrote:
> This series goal is to improve and cleanup the
> driver_deferred_probe_check_state() code in the driver core.
> 
> This series is useful for being able to support modules
> dependencies which may be loaded by userland, far after
> late_initcall is done. For instance, this series allows us to
> successfully use various clk drivers as modules on the db845c
> board. And without it, those drivers have to be statically built
> in to work.
> 
> Since I first sent out this patch, Saravana suggested an
> alternative approach which also works for our needs, and is a
> bit simpler:
>  https://lore.kernel.org/lkml/20200220055250.196456-1-saravanak@google.com/T/#u
> 
> However, while that patch provides the functionality we need,
> I still suspect the driver_deferred_probe_check_state() code
> could benefit from the cleanup in this patch, as the existing
> logic is somewhat muddy.

This looks much better, thanks for sticking with it, all now queued up.

greg k-h