linux-kernel - Re: [PATCH -rt] disable building all staging drivers

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Message-ID: <20090622205150.GA10360@kroah.com>
Date:	Mon, 22 Jun 2009 13:51:50 -0700
From:	Greg KH <greg@...ah.com>
To:	Daniel Walker <dwalker@...o99.com>
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>, linux-kernel@...r.kernel.org,
	linux-rt@...gutronix.de, Thomas Gleixner <tglx@...utronix.de>,
	Ian Abbott <abbotti@....co.uk>,
	Frank Mori Hess <fmhess@...rs.sourceforge.net>
Subject: Re: [PATCH -rt] disable building all staging drivers

On Mon, Jun 22, 2009 at 11:06:04AM -0700, Daniel Walker wrote:
> On Mon, 2009-06-22 at 10:19 -0700, Greg KH wrote:
> > On Mon, Jun 22, 2009 at 05:15:15PM +0200, Uwe Kleine-König wrote:
> > > Hi Greg,
> > > 
> > > On Mon, Jun 15, 2009 at 01:00:44AM +0200, Uwe Kleine-König wrote:
> > > > On Sun, Jun 14, 2009 at 04:28:02AM -0700, Greg KH wrote:
> > > > > On Sat, Jun 13, 2009 at 11:38:38PM +0200, Uwe Kleine-König wrote:
> > > > > > I know that at least COMEDI and RT2870 are broken with -rt,
> > > > > 
> > > > > I didn't know this, has anyone sent me a bug report?  What in -rt causes
> > > > > these drivers to break?
> > > > > 
> > > > > > but Thomas requested disabling all of staging.  He's the maintainer.
> > > > > 
> > > > > This seems like a patch to ensure that the staging drivers never get a
> > > > > chance to be fixed for any potential -rt issues.  How about just sending
> > > > > me bug reports instead?
> > > > I cannot reproduce the failure I saw for RT2870 at the moment.
> > > OK, hit again:
> > > 
> > > 17:02:43 E: ERROR: "there_is_no_init_MUTEX_LOCKED_for_RT_semaphores" [drivers/staging/rt2870/rt2870sta.ko] undefined!
> > 
> > What needs to be done in the rt2870 driver to resolve this issue?
> 
> The semaphore needs to be converted to a completion. Or the code needs
> to be re-worked so it can use a mutex.

Patches gladly accepted :)

thanks,

greg k-h
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