Re: [B.A.T.M.A.N.] [PATCHv2] batman-adv: Set special lockdep classes to avoid lockdep warning

[Marek Lindner <lindner_marek@yahoo.de>]

On Monday, August 20, 2012 09:03:59 Sven Eckelmann wrote:
> Transmissions over batman-adv devices always start another nested
> transmission over devices attached to the batman-adv interface. These
> devices usually use the ethernet lockdep class for the tx_queue lock which
> is also set by default for all batman-adv devices. Lockdep will detect a
> nested locking attempt of two locks with the same class and warn about a
> possible deadlock.
> 
> This is the default and expected behavior and should not alarm the locking
> correctness prove mechanism. Therefore, the locks for all netdevice
> specific tx queues get a special batman-adv lock class to avoid a false
> positive for each transmission.
> 
> Reported-by: Linus Lüssing <linus.luessing@web.de>
> Signed-off-by: Sven Eckelmann <sven@narfation.org>
> ---
> * fixed comment style
> * fixed commit message
> 
>  soft-interface.c |   21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)

Applied in revision e27bb6f.

Thanks,
Marek