linux-kernel - Re: [PATCH 30] drivers/ide/arm/icside.c: kmalloc + memset conversion to kzalloc

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Message-Id: <200708012301.48963.bzolnier@gmail.com>
Date:	Wed, 1 Aug 2007 23:01:48 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Mariusz Kozlowski <m.kozlowski@...land.pl>
Cc:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>, rmk@....linux.org.uk
Subject: Re: [PATCH 30] drivers/ide/arm/icside.c: kmalloc + memset conversion to kzalloc

On Tuesday 31 July 2007, Mariusz Kozlowski wrote:
> Is this a bug? In original verison memset cleared sizeof(state) bytes
> instead of sizeof(*state). If it was intentional then this patch is invalid.
> If not intentional -> valid :) Please review.

Yes, it is a bug so this patch is a valid bugfix. :-)

> Signed-off-by: Mariusz Kozlowski <m.kozlowski@...land.pl>

>  drivers/ide/arm/icside.c | 18883 -> 18849 (-34 bytes)
> 
>  drivers/ide/arm/icside.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

applied

> --- linux-2.6.23-rc1-mm1-a/drivers/ide/arm/icside.c	2007-07-26 13:07:41.000000000 +0200
> +++ linux-2.6.23-rc1-mm1-b/drivers/ide/arm/icside.c	2007-07-31 11:32:27.000000000 +0200
> @@ -682,13 +682,12 @@ icside_probe(struct expansion_card *ec,
>  	if (ret)
>  		goto out;
> 
> -	state = kmalloc(sizeof(struct icside_state), GFP_KERNEL);
> +	state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
>  	if (!state) {
>  		ret = -ENOMEM;
>  		goto release;
>  	}
> 
> -	memset(state, 0, sizeof(state));
>  	state->type	= ICS_TYPE_NOTYPE;
>  	state->dev	= &ec->dev;
> 
-
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