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

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Date:   Sat, 28 May 2022 22:22:07 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
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 Sat, May 28, 2022 at 09:37:55PM +0200, Uwe Kleine-König wrote:
> 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.

That will come with the transition to device tree/device properties. For
now wanted to keep existing functionality intact.

Thanks.

-- 
Dmitry