linux-kernel - Re: [PATCH] x86, mrst: Casting (void *) value returned by kmalloc is useless

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Date:	Fri, 18 Nov 2011 10:16:28 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Thomas Meyer <thomas@...3r.de>
Cc:	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86, mrst: Casting (void *) value returned by kmalloc
 is useless

On Thu, 17 Nov 2011 23:43:40 +0100
Thomas Meyer <thomas@...3r.de> wrote:

> The semantic patch that makes this change is available
> in scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci.
> 
> Signed-off-by: Thomas Meyer <thomas@...3r.de>
> ---
> 
> diff -u -p a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
> --- a/arch/x86/platform/mrst/mrst.c 2011-11-07 19:37:40.283168752 +0100
> +++ b/arch/x86/platform/mrst/mrst.c 2011-11-08 09:19:24.686513740 +0100
> @@ -331,7 +331,7 @@ static int __init sfi_parse_gpio(struct
>  	num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry);
>  	pentry = (struct sfi_gpio_table_entry *)sb->pentry;
>  
> -	gpio_table = (struct sfi_gpio_table_entry *)
> +	gpio_table =
>  				kmalloc(num * sizeof(*pentry), GFP_KERNEL);

True but the formatting also wants fixing with that change.

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