linux-kernel - Re: [PATCH 10/10] regulator: tps65090: Let core handle GPIO descriptors

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Message-ID: <20181128151836.GU16508@imbe.wolfsonmicro.main>
Date:   Wed, 28 Nov 2018 15:18:36 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Linus Walleij <linus.walleij@...aro.org>
CC:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 10/10] regulator: tps65090: Let core handle GPIO
 descriptors

On Wed, Nov 28, 2018 at 11:43:50AM +0100, Linus Walleij wrote:
> Use the gpiod_get_from_of_node() rather than the devm_*
> version so that the regulator core can handle the lifecycle
> of these descriptors.
> 
> This patch requires "gpio: Export gpiod_get_from_of_node()"
> to be applied first.
> 
> Fixes: 3012e81446d0 ("regulator: tps65090: Pass descriptor instead of GPIO number")
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>  drivers/regulator/tps65090-regulator.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
> index db714d5edafc..223f6974a9f3 100644
> --- a/drivers/regulator/tps65090-regulator.c
> +++ b/drivers/regulator/tps65090-regulator.c
> @@ -376,11 +376,11 @@ static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
>  				gflags = GPIOD_OUT_LOW;
>  			gflags |= GPIOD_FLAGS_BIT_NONEXCLUSIVE;
>  
> -			rpdata->gpiod = devm_gpiod_get_from_of_node(&pdev->dev,
> -								    tps65090_matches[idx].of_node,
> -								    "dcdc-ext-control-gpios", 0,
> -								    gflags,
> -								    "tps65090");
> +			rpdata->gpiod = gpiod_get_from_of_node(
> +						tps65090_matches[idx].of_node,
> +						"dcdc-ext-control-gpios", 0,
> +						gflags,
> +						"tps65090");
>  			if (IS_ERR(rpdata->gpiod))
>  				return ERR_CAST(rpdata->gpiod);
>  			if (!rpdata->gpiod)

This one needs some handling to avoid leaking the gpio too.

Thanks,
Charles