linux-kernel - Re: [PATCH 07/21] cpuidle: rearrange __cpuidle_register

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Date:	Wed, 25 Sep 2013 23:49:40 +0200
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Viresh Kumar <viresh.kumar@...aro.org>, rjw@...k.pl
CC:	linaro-kernel@...ts.linaro.org, patches@...aro.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/21] cpuidle: rearrange __cpuidle_register_device()
 to keep minimal exit points

On 09/22/2013 03:20 AM, Viresh Kumar wrote:
> This patch rearranges __cpuidle_register_device() a bit in order to reduce the
> number of exit points of this function.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  drivers/cpuidle/cpuidle.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
> index 211e504..8c91bad 100644
> --- a/drivers/cpuidle/cpuidle.c
> +++ b/drivers/cpuidle/cpuidle.c
> @@ -383,13 +383,12 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
>  	list_add(&dev->device_list, &cpuidle_detected_devices);
>  
>  	ret = cpuidle_coupled_register_device(dev);
> -	if (ret) {
> +	if (ret)
>  		__cpuidle_unregister_device(dev);
> -		return ret;
> -	}
> +	else
> +		dev->registered = 1;
>  
> -	dev->registered = 1;
> -	return 0;
> +	return ret;
>  }

There is no accounting for taste :)

I agree the patch concentrates more the return statement into a single
place which conforms better to the kernel coding style.

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