linux-kernel - Re: [PATCH 3/4] Input: adp5588-keys - switch to using managed resources

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Message-ID: <20220528193755.lncxrpgmyiy4hprm@pengutronix.de>
Date:   Sat, 28 May 2022 21:37:55 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Michael Hennerich <michael.hennerich@...log.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] Input: adp5588-keys - switch to using managed
 resources

On Fri, May 27, 2022 at 09:56:30PM -0700, Dmitry Torokhov wrote:
> This simplifies error handling in probe() and reduces amount of explicit
> code in remove().
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
> ---
>  drivers/input/keyboard/adp5588-keys.c | 111 +++++++++++---------------
>  1 file changed, 45 insertions(+), 66 deletions(-)
> 
> diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
> index ac21873ba1d7..df84a2998ed2 100644
> --- a/drivers/input/keyboard/adp5588-keys.c
> +++ b/drivers/input/keyboard/adp5588-keys.c
> @@ -182,6 +182,21 @@ static int adp5588_build_gpiomap(struct adp5588_kpad *kpad,
>  	return n_unused;
>  }
>  
> +static void adp5588_gpio_do_teardown(void *_kpad)
> +{
> +	struct adp5588_kpad *kpad = _kpad;
> +	struct device *dev = &kpad->client->dev;
> +	const struct adp5588_kpad_platform_data *pdata = dev_get_platdata(dev);
> +	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
> +	int error;
> +
> +	error = gpio_data->teardown(kpad->client,
> +				    kpad->gc.base, kpad->gc.ngpio,
> +				    gpio_data->context);
> +	if (error)
> +		dev_warn(&kpad->client->dev, "teardown failed %d\n", error);
> +}

I think the more sensible approach is to drop support for setup and
teardown. Maybe even rip all usage of adp5588_gpio_platform_data.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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