netdev - Re: [PATCH v2] cfg80211: avoid holding the RTNL when calling the driver

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Message-ID: <4ae7a27c32cbf85b4ddb05cc2a16e52918663633.camel@sipsolutions.net>
Date:   Fri, 22 Jan 2021 13:27:03 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Marek Szyprowski <m.szyprowski@...sung.com>,
        linux-wireless@...r.kernel.org
Cc:     netdev@...r.kernel.org, Oliver Neukum <oneukum@...e.com>
Subject: Re: [PATCH v2] cfg80211: avoid holding the RTNL when calling the
 driver

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