linux-kernel - Re: [PATCH] acpiphp: fix use of list_for

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Message-Id: <20061030113715.b5e8ddec.kristen.c.accardi@intel.com>
Date:	Mon, 30 Oct 2006 11:37:15 -0800
From:	Kristen Carlson Accardi <kristen.c.accardi@...el.com>
To:	Akinobu Mita <akinobu.mita@...il.com>
Cc:	linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH] acpiphp: fix use of list_for_each macro

On Sun, 29 Oct 2006 03:39:43 +0900
Akinobu Mita <akinobu.mita@...il.com> wrote:

> This patch fixes invalid usage of list_for_each()
> 
> list_for_each (node, &bridge_list) {
> 	bridge = (struct acpiphp_bridge *)node;
> 	...
> }
> 
> This code works while the member of list node is located at the
> head of struct acpiphp_bridge.
> 
> Cc: Greg Kroah-Hartman <gregkh@...e.de>
> Cc: Kristen Carlson Accardi <kristen.c.accardi@...el.com>
> Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>

Acked-by: Kristen Carlson Accardi <kristen.c.accardi@...el.com>

> 
>  drivers/pci/hotplug/acpiphp_glue.c |    8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> Index: work-fault-inject/drivers/pci/hotplug/acpiphp_glue.c
> ===================================================================
> --- work-fault-inject.orig/drivers/pci/hotplug/acpiphp_glue.c
> +++ work-fault-inject/drivers/pci/hotplug/acpiphp_glue.c
> @@ -1693,14 +1693,10 @@ void __exit acpiphp_glue_exit(void)
>   */
>  int __init acpiphp_get_num_slots(void)
>  {
> -	struct list_head *node;
>  	struct acpiphp_bridge *bridge;
> -	int num_slots;
> -
> -	num_slots = 0;
> +	int num_slots = 0;
>  
> -	list_for_each (node, &bridge_list) {
> -		bridge = (struct acpiphp_bridge *)node;
> +	list_for_each_entry (bridge, &bridge_list, list) {
>  		dbg("Bus %04x:%02x has %d slot%s\n",
>  				pci_domain_nr(bridge->pci_bus),
>  				bridge->pci_bus->number, bridge->nr_slots,
-
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