linux-kernel - Re: [PATCH] staging: unisys: kmalloc/memset to kzalloc conversation

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Date:	Tue, 18 Mar 2014 13:17:25 -0700
From:	Joe Perches <joe@...ches.com>
To:	Silvio F <silvio.fricke@...il.com>
Cc:	linux-kernel@...r.kernel.org, daeseok.youn@...il.com,
	silvio@...t1024.net
Subject: Re: [PATCH] staging: unisys: kmalloc/memset to kzalloc conversation

On Tue, 2014-03-18 at 21:07 +0100, Silvio F wrote:
> This patch solves the Coccinelle warning: "kzalloc should be used
> instead of kmalloc/memset"
[]
> diff --git a/drivers/staging/unisys/include/uisutils.h b/drivers/staging/unisys/include/uisutils.h
[]
> @@ -190,10 +190,7 @@ struct chaninfo {
>  }
>  
>  #define ALLOC_CMDRSP(cmdrsp) { \
> -	cmdrsp = kmalloc(SIZEOF_CMDRSP, GFP_ATOMIC); \
> -	if (cmdrsp != NULL) { \
> -		memset(cmdrsp, 0, SIZEOF_CMDRSP); \
> -	} \
> +	cmdrsp = kzalloc(SIZEOF_CMDRSP, GFP_ATOMIC); \
>  }

It'd be nicer to get rid of this macro altogether
and substitute kzalloc in the 3 places it's used.


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