linux-kernel - Re: [PATCH] pinctrl: sunxi: Free configs in pinctrl

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Message-ID: <CACRpkdYQo0ecvARoDzZ66pi+wuvaeGqHYZM4UkEgwhOuXnGm_w@mail.gmail.com>
Date:   Tue, 15 Nov 2016 10:15:01 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH] pinctrl: sunxi: Free configs in pinctrl_map only if it is
 a config map

On Fri, Nov 11, 2016 at 3:35 AM, Chen-Yu Tsai <wens@...e.org> wrote:

> In the recently refactored sunxi pinctrl library, we are only allocating
> one set of pin configs for each pinmux setting node. When the pinctrl_map
> structure is freed, the pin configs should also be freed. However the
> code assumed the first map would contain the configs, which actually
> never happens, as the mux function map gets added first.
>
> The proper way to do this is to look through all the maps and free the
> first one whose type is actually PIN_MAP_TYPE_CONFIGS_GROUP.
>
> Also slightly expand the comment explaining this.
>
> Fixes: f233dbca6227 ("pinctrl: sunxi: Rework the pin config building code")
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>

Patch applied with Maxime's ACK.

Yours,
Linus Walleij