linux-kernel - Re: Recent and not-so problems with tifm

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Message-ID: <320344.9830.qm@web36715.mail.mud.yahoo.com>
Date:	Mon, 19 Feb 2007 17:30:05 -0800 (PST)
From:	Alex Dubov <oakad@...oo.com>
To:	Pierre Ossman <drzeus-mmc@...eus.cx>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Recent and not-so problems with tifm_sd driver

> > 
> > 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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