ath9k DFS failed -16 (Device or resource busy)

[Zefir Kurtisi]

On 02/22/2016 12:13 PM, Janusz Dziedzic wrote:
> On 22 February 2016 at 09:25, Benoit <benoitne at gmail.com> wrote:
>> Hi Janusz,
>> Without | grep radar as it doesn't match anything :
>>
> So, your driver is compiled without ATH9K_DFS_CERTIFIED.
> 

... which requires CFG80211_CERTIFICATION_ONUS to be set which is only available
in EXPERT mode.