linux-kernel - Re: [PATCH 1/2] ehea: Fix DLPAR memory handling

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Message-ID: <48CC1AC3.7090406@garzik.org>
Date:	Sat, 13 Sep 2008 15:55:47 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Hannes Hering <hannes.hering@....de>
CC:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	netdev@...r.kernel.org, ossrosch@...ux.vnet.ibm.com,
	ossthema@...ibm.com, raisch@...ibm.com, themann@...ibm.com,
	osstklei@...ibm.com
Subject: Re: [PATCH 1/2] ehea: Fix DLPAR memory handling

Hannes Hering wrote:
> The ehea busmap must be allocated only once in the first of many calls of the
> ehea_create_busmap_callback.
> 
> Signed-off-by: Hannes Hering <hering2@...ibm.com>
> ---
> 
> diff -Nurp -X dontdiff linux-2.6.27-rc5/drivers/net/ehea/ehea_qmr.c patched_kernel/drivers/net/ehea/ehea_qmr.c
> --- linux-2.6.27-rc5/drivers/net/ehea/ehea_qmr.c	2008-08-29 00:52:02.000000000 +0200
> +++ patched_kernel/drivers/net/ehea/ehea_qmr.c	2008-09-05 15:31:30.000000000 +0200
> @@ -595,7 +595,8 @@ static int ehea_create_busmap_callback(u
>  	end_section = start_section + ((nr_pages * PAGE_SIZE) / EHEA_SECTSIZE);
>  	mr_len = *(unsigned long *)arg;
>  
> -	ehea_bmap = kzalloc(sizeof(struct ehea_bmap), GFP_KERNEL);
> +	if (!ehea_bmap)
> +		ehea_bmap = kzalloc(sizeof(struct ehea_bmap), GFP_KERNEL);
>  	if (!ehea_bmap)
>  		return -ENOMEM;

applied


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