linux-kernel - Re: [PATCH v5 2/8] iio: mb1232: relax return value check for IRQ get

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Message-ID: <20230520163249.56f1e56d@jic23-huawei>
Date:   Sat, 20 May 2023 16:32:49 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Matti Vaittinen <mazziesaccount@...il.com>
Cc:     Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Wolfram Sang <wsa@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Andreas Klinger <ak@...klinger.de>,
        Marcin Wojtas <mw@...ihalf.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Linus Walleij <linus.walleij@...aro.org>,
        Paul Cercueil <paul@...pouillou.net>,
        Akhil R <akhilrajeev@...dia.com>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-iio@...r.kernel.org, netdev@...r.kernel.org,
        openbmc@...ts.ozlabs.org, linux-gpio@...r.kernel.org,
        linux-mips@...r.kernel.org
Subject: Re: [PATCH v5 2/8] iio: mb1232: relax return value check for IRQ
 get

On Fri, 19 May 2023 14:01:23 +0300
Matti Vaittinen <mazziesaccount@...il.com> wrote:

> fwnode_irq_get() was changed to not return 0 anymore.
> 
> Drop check for return value 0.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@...il.com>
> 
Acked-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
> Revsion history:
> v4 => v5:
>  - drop unnecessary data->irqnr = -1 assignment
> 
> The first patch of the series changes the fwnode_irq_get() so this depends
> on the first patch of the series and should not be applied alone.
> ---
>  drivers/iio/proximity/mb1232.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/iio/proximity/mb1232.c b/drivers/iio/proximity/mb1232.c
> index e70cac8240af..3ae226297a00 100644
> --- a/drivers/iio/proximity/mb1232.c
> +++ b/drivers/iio/proximity/mb1232.c
> @@ -76,7 +76,7 @@ static s16 mb1232_read_distance(struct mb1232_data *data)
>  		goto error_unlock;
>  	}
>  
> -	if (data->irqnr >= 0) {
> +	if (data->irqnr > 0) {
>  		/* it cannot take more than 100 ms */
>  		ret = wait_for_completion_killable_timeout(&data->ranging,
>  									HZ/10);
> @@ -212,10 +212,7 @@ static int mb1232_probe(struct i2c_client *client)
>  	init_completion(&data->ranging);
>  
>  	data->irqnr = fwnode_irq_get(dev_fwnode(&client->dev), 0);
> -	if (data->irqnr <= 0) {
> -		/* usage of interrupt is optional */
> -		data->irqnr = -1;
> -	} else {
> +	if (data->irqnr > 0) {
>  		ret = devm_request_irq(dev, data->irqnr, mb1232_handle_irq,
>  				IRQF_TRIGGER_FALLING, id->name, indio_dev);
>  		if (ret < 0) {