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Re: [PATCH] mac80211: fix debugfs netdev rename

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That looks like it is probably it!

Thanks,
Robin


On Wed, Oct 08, 2008 at 10:18:36AM +0200, Johannes Berg wrote:
> If, for some reason, a netdev has no debugfs dir, we shouldn't
> try to rename that dir.
> 
> Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
> Cc: Robin Holt <holt@xxxxxxx>
> ---
> Robin, ok, I was wrong, this might be causing it...
> 
>  net/mac80211/debugfs_netdev.c |    6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> --- everything.orig/net/mac80211/debugfs_netdev.c	2008-10-08 10:08:23.000000000 +0200
> +++ everything/net/mac80211/debugfs_netdev.c	2008-10-08 10:08:37.000000000 +0200
> @@ -481,8 +481,12 @@ static int netdev_notify(struct notifier
>  
>  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
>  
> -	sprintf(buf, "netdev:%s", dev->name);
>  	dir = sdata->debugfsdir;
> +
> +	if (!dir)
> +		return 0;
> +
> +	sprintf(buf, "netdev:%s", dev->name);
>  	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
>  		printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
>  		       "dir to %s\n", buf);
> 
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