netdev - Re: [PATCH net-next 4/8] bridge: sysfs cleanup

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Date:	Fri, 20 Jun 2008 10:44:11 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Wang Chen <wangchen@...fujitsu.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	NETDEV <netdev@...r.kernel.org>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCH net-next 4/8] bridge: sysfs cleanup

On Fri, 20 Jun 2008 08:55:15 +0800
Wang Chen <wangchen@...fujitsu.com> wrote:

> When I am doing this series of patch, I notice that bridge's sysfs are
> not cleanuped after failure and bridge delete.
> 
> Here is the patch for it.
> 
> Signed-off-by: Wang Chen <wangchen@...fujitsu.com>
> ---
>  net/bridge/br_if.c       |    2 ++
>  net/bridge/br_sysfs_if.c |    9 ++++++++-
>  2 files changed, 10 insertions(+), 1 deletions(-)
> 
> diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
> index 49dd433..4b730fa 100644
> --- a/net/bridge/br_if.c
> +++ b/net/bridge/br_if.c
> @@ -161,6 +161,7 @@ static void del_br(struct net_bridge *br)
>  	struct net_bridge_port *p, *n;
>  
>  	list_for_each_entry_safe(p, n, &br->port_list, list) {
> +		br_sysfs_removeif(p);
>  		del_nbp(p);
>  	}
>  
> @@ -435,6 +436,7 @@ int br_del_if(struct net_bridge *br, struct net_device *dev)
>  	if (!p || p->br != br)
>  		return -EINVAL;
>  
> +	br_sysfs_removeif(p);
>  	del_nbp(p);
>  
>  	spin_lock_bh(&br->lock);
> diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
> index 7f80462..9e9d17c 100644
> --- a/net/bridge/br_sysfs_if.c
> +++ b/net/bridge/br_sysfs_if.c
> @@ -226,10 +226,17 @@ int br_sysfs_addif(struct net_bridge_port *p)
>  	for (a = brport_attrs; *a; ++a) {
>  		err = sysfs_create_file(&p->kobj, &((*a)->attr));
>  		if (err)
> -			goto out2;
> +			goto out1;
>  	}
>  
>  	err = sysfs_create_link(br->ifobj, &p->kobj, p->dev->name);
> +	if (err)
> +		goto out1;
> +	return 0;
> +out1:
> +	for (a = brport_attrs; *a; ++a)
> +		sysfs_remove_file(&p->kobj, &((*a)->attr));
> +	sysfs_remove_link(&br->dev->dev.kobj, SYSFS_BRIDGE_PORT_LINK);
>  out2:
>  	return err;
>  }

This is unneeded since the bridge port kobject is deleted when removed
or in case of error and kobject_del calls sysfs_remove_dir.
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