linux-kernel - Re: [PATCH resend v1 1/7] pps: clients: gpio: Bail out on error when requesting GPIO echo line

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Message-ID: <bde071f7-6d98-d7bd-42d9-9e0f4d5d936d@enneenne.com>
Date:   Tue, 9 Mar 2021 13:23:57 +0100
From:   Rodolfo Giometti <giometti@...eenne.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Cc:     Ryan Govostes <rgovostes@...i.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH resend v1 1/7] pps: clients: gpio: Bail out on error when
 requesting GPIO echo line

On 09/03/21 12:23, Andy Shevchenko wrote:
> When requesting optional GPIO echo line, bail out on error,
> so user will know that something wrong with the existing property.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/pps/clients/pps-gpio.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/pps/clients/pps-gpio.c b/drivers/pps/clients/pps-gpio.c
> index e0de1df2ede0..f89c31aa66f1 100644
> --- a/drivers/pps/clients/pps-gpio.c
> +++ b/drivers/pps/clients/pps-gpio.c
> @@ -119,12 +119,12 @@ static int pps_gpio_setup(struct platform_device *pdev)
>  	data->echo_pin = devm_gpiod_get_optional(&pdev->dev,
>  			"echo",
>  			GPIOD_OUT_LOW);
> -	if (data->echo_pin) {
> -		if (IS_ERR(data->echo_pin)) {
> -			dev_err(&pdev->dev, "failed to request ECHO GPIO\n");
> -			return PTR_ERR(data->echo_pin);
> -		}
> +	if (IS_ERR(data->echo_pin)) {
> +		dev_err(&pdev->dev, "failed to request ECHO GPIO\n");
> +		return PTR_ERR(data->echo_pin);
> +	}
>  
> +	if (data->echo_pin) {
>  		ret = of_property_read_u32(np,
>  			"echo-active-ms",
>  			&value);
> 

Acked-by: Rodolfo Giometti <giometti@...eenne.com>

-- 
GNU/Linux Solutions                  e-mail: giometti@...eenne.com
Linux Device Driver                          giometti@...ux.it
Embedded Systems                     phone:  +39 349 2432127
UNIX programming                     skype:  rodolfo.giometti