Re: [PATCH 0/7] convert semaphore to mutex in struct class

["Dave Young" <hidave.darkstar@gmail.com>]

On Jan 3, 2008 3:24 PM, Jarek Poplawski <jarkao2@gmail.com> wrote:
> On Thu, Jan 03, 2008 at 08:06:09AM +0100, Jarek Poplawski wrote:
> > On Thu, Jan 03, 2008 at 01:50:20PM +0800, Dave Young wrote:
> > > Convert semaphore to mutex in struct class.
> > ...
> > > One lockdep warning detected as following, thus use mutex_lock_nested with SINGLE_DEPTH_NESTING in class_device_add
> > >
> > > Jan  3 10:45:15 darkstar kernel: =============================================
> > > Jan  3 10:45:15 darkstar kernel: [ INFO: possible recursive locking detected ]
> > > Jan  3 10:45:15 darkstar kernel: 2.6.24-rc6-mm1-mutex #1
> > > Jan  3 10:45:15 darkstar kernel: ---------------------------------------------
> > ...
> > > If there's anything missed please help to point out, thanks.
> >
> > Dave, IMHO it's not 'the right' way to do it: [...]
>
> OOPS! (I was sleeping...) Unless it has turned out it's not so hard
> here, and you are quite sure there should be no more warnings after
> this one nesting annotation - then of course, this is the right way!

Thanks ;)
I don't know if there's other possible warning places with this mutex
or not,  if you have any ideas about this, please tell me.

>
> Sorry (?)
> Jarek P.
>