[v4,5/5] PCI/AER: free pci_bus_ops_list and remove pci_bus_ops_pop

Rewrite pci_bus_ops_list release code for simplification, and clean
no used function pci_bus_ops_pop().

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
---
 drivers/pci/pcie/aer/aer_inject.c |   25 ++++++-------------------
 1 files changed, 6 insertions(+), 19 deletions(-)

On Fri, 2012-09-21 at 11:44 +0800, Yijing Wang wrote:
> Rewrite pci_bus_ops_list release code for simplification, and clean
> no used function pci_bus_ops_pop().
> 
> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
> Signed-off-by: Huang Ying <ying.huang@intel.com>

Please remove my signed-off.

Reviewed-by: Huang Ying <ying.huang@intel.com>

> ---
>  drivers/pci/pcie/aer/aer_inject.c |   25 ++++++-------------------
>  1 files changed, 6 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c
> index a5fd393..4c9268a 100644
> --- a/drivers/pci/pcie/aer/aer_inject.c
> +++ b/drivers/pci/pcie/aer/aer_inject.c
> @@ -145,23 +145,6 @@ static struct pci_ops *__find_pci_bus_ops(struct pci_bus *bus)
>  	return __find_pci_bus_ops_parent(bus);
>  }
>  
> -static struct pci_bus_ops *pci_bus_ops_pop(void)
> -{
> -	unsigned long flags;
> -	struct pci_bus_ops *bus_ops = NULL;
> -
> -	spin_lock_irqsave(&inject_lock, flags);
> -	if (list_empty(&pci_bus_ops_list))
> -		bus_ops = NULL;
> -	else {
> -		struct list_head *lh = pci_bus_ops_list.next;
> -		list_del(lh);
> -		bus_ops = list_entry(lh, struct pci_bus_ops, list);
> -	}
> -	spin_unlock_irqrestore(&inject_lock, flags);
> -	return bus_ops;
> -}
> -
>  static struct pci_bus_ops *pci_bus_ops_get(struct pci_bus_ops *from)
>  {
>  	struct pci_bus_ops *bus_ops = NULL;
> @@ -622,7 +605,7 @@ static void __exit aer_inject_exit(void)
>  {
>  	struct aer_error *err, *err_next;
>  	unsigned long flags;
> -	struct pci_bus_ops *bus_ops = NULL;
> +	struct pci_bus_ops *bus_ops = NULL, *tmp_ops;
>  
>  	bus_unregister_notifier(&pci_bus_type, &aerinj_hp_notifier);
>  	misc_deregister(&aer_inject_device);
> @@ -631,8 +614,12 @@ static void __exit aer_inject_exit(void)
>  		pci_bus_set_ops(bus_ops->bus, bus_ops->ops);
>  
>  	clean_untracked_pci_ops_aer();
> -	while ((bus_ops = pci_bus_ops_pop()))
> +
> +	/* free pci_bus_ops_list */
> +	list_for_each_entry_safe(bus_ops, tmp_ops, &pci_bus_ops_list, list) {
> +		list_del(&bus_ops->list);
>  		kfree(bus_ops);
> +	}
>  
>  	spin_lock_irqsave(&inject_lock, flags);
>  	list_for_each_entry_safe(err, err_next, &einjected, list) {


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