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Date:   Sat, 11 Sep 2021 18:11:31 +0100
From:   Jonathan Cameron <jic23@kernel.org>
To:     Cai Huoqing <caihuoqing@baidu.com>
Cc:     Lars-Peter Clausen <lars@metafoo.de>,
        Michael Hennerich <Michael.Hennerich@analog.com>,
        <linux-iio@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] iio: adc: ad799x: Add a single error handling block at
 the end of the function.
Message-ID: <20210911181131.4e7ff695@jic23-huawei>
In-Reply-To: <20210907062407.1930-1-caihuoqing@baidu.com>
References: <20210907062407.1930-1-caihuoqing@baidu.com>
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On Tue, 7 Sep 2021 14:24:06 +0800
Cai Huoqing <caihuoqing@baidu.com> wrote:

> A single error handling block at the end of the function could
> be brought in to make code a little more concise.
> 
> Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
> ---
>  drivers/iio/adc/ad799x.c | 17 ++++++++++-------
>  1 file changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
> index 18bf8386d50a..d3dbc4c1e375 100644
> --- a/drivers/iio/adc/ad799x.c
> +++ b/drivers/iio/adc/ad799x.c
> @@ -891,20 +891,23 @@ static int __maybe_unused ad799x_resume(struct device *dev)
>  	}
>  	ret = regulator_enable(st->vref);
>  	if (ret) {
> -		regulator_disable(st->reg);
>  		dev_err(dev, "Unable to enable vref regulator\n");
> -		return ret;
> +		goto error_disable_reg;
>  	}
>  
>  	/* resync config */
>  	ret = ad799x_update_config(st, st->config);
> -	if (ret) {
> -		regulator_disable(st->vref);
> -		regulator_disable(st->reg);
> -		return ret;
> -	}
> +	if (ret)
> +		goto error_disable_vref;
>  
>  	return 0;
> +
> +error_disable_vref:
> +	regulator_disable(st->vref);
> +error_disable_reg:
> +	regulator_disable(st->vref);
st->reg

> +
> +	return ret;
>  }
>  
>  static SIMPLE_DEV_PM_OPS(ad799x_pm_ops, ad799x_suspend, ad799x_resume);