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Date: Wed, 31 May 2017 10:35:23 +0200
From: Johan Hovold <johan@kernel.org>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Johan Hovold <johan@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Peter Chen <peter.chen@freescale.com>, Rob Herring <robh@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>, Sricharan R <sricharan@codeaurora.org>,
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Subject: Re: [PATCH 4/7] driver core: fix automatic pinctrl management
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References: <20170530162554.26159-1-johan@kernel.org>
 <20170530162554.26159-5-johan@kernel.org>
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On Wed, May 31, 2017 at 02:39:28AM +0200, Linus Walleij wrote:
> On Tue, May 30, 2017 at 6:25 PM, Johan Hovold <johan@kernel.org> wrote:
> 
> > Commit ab78029ecc34 ("drivers/pinctrl: grab default handles from device
> > core") added automatic pin-control management to driver core by looking
> > up and setting any default pinctrl state found in device tree while a
> > device is being probed.
> 
> Actually we do not just support device tree, but also passing pin control
> states from board files. It is handled by the core all the same.
> So it's not a device tree thing.
> 
> One of those days we will have ACPI passing state tables too...
> 
> But I understand what you mean.

Yes, I could have mentioned board files, but this problem only applies
to device-tree descriptions (for the time being at least).

> > Fix this by checking the new of_node_reused flag and skipping automatic
> > pinctrl configuration during probe if set.
> 
> Seems like a solid idea. I hope we don't need another quirk for ACPI.

We should be able to just generalise and rename the flag (or add a
second one) if it turns out ACPI needs this too.

> Acked-by: Linus Walleij <linus.walleij@linaro.org>

Thanks,
Johan