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From: Pierre Ossman <drzeus-mmc@drzeus.cx>
To: Alex Dubov <oakad@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Recent and not-so problems with tifm_sd driver
Date: Mon, 19 Feb 2007 13:34:39 +0100	[thread overview]
Message-ID: <45D9995F.9070108@drzeus.cx> (raw)
In-Reply-To: <570331.88389.qm@web36706.mail.mud.yahoo.com>

Alex Dubov wrote:
> 
> 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 
>              turn calls device_del, though we are still in device_add
> 

Ahhh, now I see. Well that's an entirely different kettle of fish.

Removing the device in this stack is not supported (we would have a whole bunch
of nasty dead lock possibilities to consider). You need to delay the removal in
some form, e.g. using the mmc workqueue.

Rgds
-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  PulseAudio, core developer          http://pulseaudio.org
  rdesktop, core developer          http://www.rdesktop.org

  reply	other threads:[~2007-02-19 12:34 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-07 22:20 [2.6.20] tifm_7xx1/mmc not working Andreas Steinmetz
2007-02-08  5:59 ` Pierre Ossman
2007-02-08 23:35   ` Alex Dubov
2007-02-09 12:27     ` Andreas Steinmetz
2007-02-09 15:14   ` Recent and not-so problems with tifm_sd driver Alex Dubov
2007-02-09 19:10     ` Pierre Ossman
2007-02-10  9:12       ` Recent and not-so problems with tifm_sd driver - one more Alex Dubov
2007-02-10 13:01         ` Pierre Ossman
2007-02-11  6:03           ` Brad Campbell
2007-02-11 14:52             ` Fabio Comolli
2007-02-11 15:40             ` Pierre Ossman
2007-02-11 15:56               ` Brad Campbell
2007-02-11 18:04                 ` Pierre Ossman
2007-02-11 19:32                   ` Brad Campbell
2007-02-12  9:14                     ` Pierre Ossman
2007-02-12 10:50                       ` Brad Campbell
2007-02-12 13:21                     ` Andreas Steinmetz
2007-02-17 15:16                   ` [mmc] incorrect behavior on resume Alex Dubov
2007-02-17 23:35                     ` Pierre Ossman
2007-02-18  0:29                       ` Pavel Machek
2007-02-18  1:46                         ` Alex Dubov
2007-02-18  6:53                           ` Russell King
2007-02-18 12:18                             ` Alex Dubov
2007-02-11  4:47       ` Recent and not-so problems with tifm_sd driver Alex Dubov
2007-02-11 18:15         ` Pierre Ossman
2007-02-12 11:53           ` Alex Dubov
2007-02-12 13:49             ` Pierre Ossman
2007-02-13  0:44               ` Alex Dubov
2007-02-13 14:40               ` Alex Dubov
2007-02-17 23:14                 ` Pierre Ossman
2007-02-17 23:51             ` Pierre Ossman
2007-02-18  4:59               ` Alex Dubov
2007-02-18  8:13                 ` Pierre Ossman
2007-02-18 14:19                   ` Alex Dubov
2007-02-18 15:10                     ` Pierre Ossman
2007-02-18 23:48                       ` Alex Dubov
2007-02-19  7:06                         ` Pierre Ossman
2007-02-19 12:09                           ` Alex Dubov
2007-02-19 12:34                             ` Pierre Ossman [this message]
2007-02-20  1:30                               ` Alex Dubov
2007-02-20  7:03                                 ` Pierre Ossman
2007-03-14 14:44                               ` Weird MMC errors: 1 of 2 - bad ocr value Alex Dubov
2007-04-08 19:41                                 ` Pierre Ossman

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