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Re: mac80211 warning in 3.9.0+ when unloading ath9k driver.

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On Wed, 2013-05-08 at 10:38 -0700, Ben Greear wrote:
> I saw the WARN_ON_ONCE hit below on 3.9.0+ (+ hacks)
> on a system with ath9k and ath9k_htc driver.

Were you using VLANs?

> I'll be happy to add more debugging if someone has suggestions.

> 		compat = cfg80211_chandef_compatible(
> 				&sdata->vif.bss_conf.chandef, compat);
> 		if (!compat)
> 			break;
> 	}
> 	rcu_read_unlock();
> 
> 	if (WARN_ON_ONCE(!compat))
> 		return;

Might be helpful to know whether chandef_compatible() returned NULL, or
if the loop simply never found an interface with a matching pointer.

johannes

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