linux-kernel - Re: [PATCH 1/1] pinctrl: stmfx: fix valid

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Date:   Thu, 7 Nov 2019 10:07:10 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Amelie Delaunay <amelie.delaunay@...com>
Cc:     Alexandre Torgue <alexandre.torgue@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH 1/1] pinctrl: stmfx: fix valid_mask init sequence

On Mon, Nov 4, 2019 at 11:09 AM Amelie Delaunay <amelie.delaunay@...com> wrote:

> With stmfx_pinctrl_gpio_init_valid_mask callback, gpio_valid_mask was used
> to initialize gpiochip valid_mask for gpiolib. But gpio_valid_mask was not
> yet initialized. gpio_valid_mask required gpio-ranges to be registered,
> this is the case after gpiochip_add_data call. But init_valid_mask
> callback is also called under gpiochip_add_data. gpio_valid_mask
> initialization cannot be moved before gpiochip_add_data because
> gpio-ranges are not registered.
> So, it is not possible to use init_valid_mask callback.
> To avoid this issue, get rid of valid_mask and rely on ranges.
>
> Fixes: da9b142ab2c5 ("pinctrl: stmfx: Use the callback to populate valid_mask")
> Signed-off-by: Amelie Delaunay <amelie.delaunay@...com>

Patch applied for fixes.

Yours,
Linus Walleij