linux-kernel - Re: [PATCH] cpuidle: fix an incorrect NULL pointer check

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Message-ID: <4F140642.6060105@linux.vnet.ibm.com>
Date:	Mon, 16 Jan 2012 16:43:06 +0530
From:	Deepthi Dharwar <deepthi@...ux.vnet.ibm.com>
To:	jhbird.choi@...sung.com
CC:	linux-kernel@...r.kernel.org, Kevin Hilman <khilman@...com>,
	Len Brown <len.brown@...el.com>,
	Trinabh Gupta <g.trinabh@...il.com>,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: [PATCH] cpuidle: fix an incorrect NULL pointer check

On 01/14/2012 04:12 AM, jhbird.choi@...sung.com wrote:

> From: Jonghwan Choi <jhbird.choi@...sung.com>
> 
> "cpu_dev" should be checked instead of "dev".
> 
> Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
> ---
>  drivers/cpuidle/cpuidle.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
> index 59f4261..7771810 100644
> --- a/drivers/cpuidle/cpuidle.c
> +++ b/drivers/cpuidle/cpuidle.c
> @@ -294,7 +294,7 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
>  	struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
>  	struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
> 
> -	if (!dev)
> +	if (!cpu_dev)
>  		return -EINVAL;
>  	if (!try_module_get(cpuidle_driver->owner))
>  		return -EINVAL;


Reviewed-by: Deepthi Dharwar <deepthi@...ux.vnet.ibm.com>

Cheers
Deepthi

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