linux-kernel - Re: [PATCH] drivers/block/cciss.c: correct size computation

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Date:	Mon, 23 Apr 2012 10:08:21 -0500
From:	Mike Miller <mike.miller@...com>
To:	Julia Lawall <Julia.Lawall@...6.fr>
CC:	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
	ISS StorageDev <iss_storagedev@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers/block/cciss.c: correct size computation

On 04/21/2012 09:08 AM, Julia Lawall wrote:
> From: Julia Lawall<Julia.Lawall@...6.fr>
>
> The size argument to remap_pci_mem should be the size of desired structure,
> not the pointer to it.
>
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
>
> //<smpl>
> @expression@
> expression *x;
> @@
>
> x =
>   <+...
> -sizeof(x)
> +sizeof(*x)
> ...+>
> //</smpl>
>
> Signed-off-by: Julia Lawall<Julia.Lawall@...6.fr>
Acked-by: Mike Miller <mike.miller@...com>
>
> ---
>   drivers/block/cciss.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
> index b0f553b..9f50d7d 100644
> --- a/drivers/block/cciss.c
> +++ b/drivers/block/cciss.c
> @@ -4209,7 +4209,7 @@ static int __devinit cciss_find_cfgtables(ctlr_info_t *h)
>   	if (rc)
>   		return rc;
>   	h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
> -		cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable));
> +		cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
>   	if (!h->cfgtable)
>   		return -ENOMEM;
>   	rc = write_driver_ver_to_cfgtable(h->cfgtable);
>

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