Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20230105150603.2810510-1-michael@walle.cc>
In-Reply-To: <20230105150603.2810510-1-michael@walle.cc>
From:   Bartosz Golaszewski <brgl@bgdev.pl>
Date:   Fri, 6 Jan 2023 14:14:26 +0100
Message-ID: <CAMRc=McEin9uXOFEeB1=oDKmUTu+hvKoaUGjCx-7Prc7RXubJw@mail.gmail.com>
Subject: Re: [PATCH RESEND] gpio: regmap: use new regmap_might_sleep()
To:     Michael Walle <michael@walle.cc>
Cc:     Linus Walleij <linus.walleij@linaro.org>,
        linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
        William Breathitt Gray <william.gray@linaro.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Thu, Jan 5, 2023 at 4:06 PM Michael Walle <michael@walle.cc> wrote:
>
> Now that the regmap can be queried whether it might sleep, we can get
> rid of the conservative setting "can_sleep = true". New drivers which
> want to use gpio-regmap and can access the registers memory-mapped won't
> have the restriction that their consumers have to use the
> gpiod_*cansleep() variants anymore.
>
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  drivers/gpio/gpio-regmap.c | 10 +---------
>  1 file changed, 1 insertion(+), 9 deletions(-)
>
> diff --git a/drivers/gpio/gpio-regmap.c b/drivers/gpio/gpio-regmap.c
> index f907c9c19fce..fca17d478984 100644
> --- a/drivers/gpio/gpio-regmap.c
> +++ b/drivers/gpio/gpio-regmap.c
> @@ -254,15 +254,7 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config
>         chip->ngpio = config->ngpio;
>         chip->names = config->names;
>         chip->label = config->label ?: dev_name(config->parent);
> -
> -       /*
> -        * If our regmap is fast_io we should probably set can_sleep to false.
> -        * Right now, the regmap doesn't save this property, nor is there any
> -        * access function for it.
> -        * The only regmap type which uses fast_io is regmap-mmio. For now,
> -        * assume a safe default of true here.
> -        */
> -       chip->can_sleep = true;
> +       chip->can_sleep = regmap_might_sleep(config->regmap);
>
>         chip->get = gpio_regmap_get;
>         if (gpio->reg_set_base && gpio->reg_clr_base)
> --
> 2.30.2
>

Applied, thanks!

Bart