Hi Marek,

This patch landed in today's (20210122) linux-next as commit 
791daf8fc49a ("cfg80211: avoid holding the RTNL when calling the 
driver"). Sadly, it causes deadlock with mwifiex driver. I think that 
lockdep report describes it enough:

Yeah, umm, sorry about that. Evidently, I somehow managed to put
"wiphy_lock()" into that part of the code, rather than "wiphy_unlock()"!

I'll fix, thanks!

johannes