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Date: Mon, 19 Feb 2007 17:30:05 -0800 (PST)
From: Alex Dubov <oakad@yahoo.com>
Subject: Re: Recent and not-so problems with tifm_sd driver
To: Pierre Ossman <drzeus-mmc@drzeus.cx>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <45D9995F.9070108@drzeus.cx>
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> > 
> > mmc_rescan
> >   mmc_register_card
> >     device_add
> >       mmc_block_probe
> >         mmc_block_alloc
> >           -> queue thread starts running
> >         add_disk
> >           -> issues a lot of requests; card fails, my drivers calls mmc_remove_host, which in 

correction: my driver schedules (wakes kthread in 0.7) mmc_remove_host - noticed it only now

> >              turn calls device_del, though we are still in device_add
> > 
> 

That's why I think that simply flushing the workqueue is enough. If workqueue is empty we know for
sure that device_add has exited.


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