linux-kernel - Re: [PATCH 08/17][trivial] scsi: Remove unnecessary casts of void ptr returning alloc function return values

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Date:	Mon, 08 Nov 2010 15:34:26 -0800
From:	Joe Perches <joe@...ches.com>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	linux-kernel@...r.kernel.org, trivial@...nel.org,
	linux-scsi@...r.kernel.org, osst-users@...ts.sourceforge.net,
	"James E.J. Bottomley" <James.Bottomley@...e.de>,
	Hannes Reinecke <hare@...e.de>
Subject: Re: [PATCH 08/17][trivial] scsi: Remove unnecessary casts of void
 ptr returning alloc function return values

On Tue, 2010-11-09 at 00:09 +0100, Jesper Juhl wrote:
> Signed-off-by: Jesper Juhl <jj@...osbits.net>
> diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c
[]
> @@ -4780,7 +4780,7 @@ ahc_init_scbdata(struct ahc_softc *ahc)
>  	SLIST_INIT(&scb_data->sg_maps);
>  
>  	/* Allocate SCB resources */
> -	scb_data->scbarray = (struct scb *)kmalloc(sizeof(struct scb) * AHC_SCB_MAX_ALLOC, GFP_ATOMIC);
> +	scb_data->scbarray = kmalloc(sizeof(struct scb) * AHC_SCB_MAX_ALLOC, GFP_ATOMIC);
>  	if (scb_data->scbarray == NULL)
>  		return (ENOMEM);
>  	memset(scb_data->scbarray, 0, sizeof(struct scb) * AHC_SCB_MAX_ALLOC);

This would be better as:

	scb_data->scbarray = kcalloc(AHC_SCB_MAX_ALLOC, sizeof(struct scb), GFP_ATOMIC)

without the memset.


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