linux-kernel - Re: [RFC v2 2/3] pinctrl: imx: use radix trees for groups and functions

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Message-ID: <CAAMH-yutJN3wLYze9Ao120LcCcE7F7JbpZyeghg-vB9pyFObkw@mail.gmail.com>
Date:   Thu, 29 Dec 2016 10:44:53 +0100
From:   Gary Bisson <gary.bisson@...ndarydevices.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Fabio Estevam <fabio.estevam@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Vladimir Zapolskiy <vladimir_zapolskiy@...tor.com>
Subject: Re: [RFC v2 2/3] pinctrl: imx: use radix trees for groups and functions

Hi Linus, All,

On Tue, Dec 27, 2016 at 11:07 PM, Linus Walleij
<linus.walleij@...aro.org> wrote:
>
> On Fri, Dec 2, 2016 at 5:35 PM, Gary Bisson
> <gary.bisson@...ndarydevices.com> wrote:
>
> > This change is inspired from the pinctrl-single architecture.
> >
> > The problem with current implementation is that it isn't possible
> > to add/remove functions and/or groups dynamically. The radix tree
> > offers an easy way to do so. The intent is to offer a follow-up
> > patch later that will enable the use of pinctrl nodes in dt-overlays.
> >
> > Signed-off-by: Gary Bisson <gary.bisson@...ndarydevices.com>
>
> This patch doesn't apply on v4.10-rc1 so please rebase it
> on the mainline and resend as v3, include Fabio's review tag.

Actually it applies if the first patch of this v2 series is also applied first.
https://patchwork.kernel.org/patch/9458883/
https://patchwork.kernel.org/patch/9458889/

The 3rd patch of the series can be discarded though since it was just
an example to show the benefit of the first two.

I guess someone needs to also ack/review the first one. Because
switching to radix tree keeping the const qualifier of the driver
structure isn't really useful.

Regards,
Gary