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

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Date:	Sun, 18 Feb 2007 09:13:08 +0100
From:	Pierre Ossman <drzeus-mmc@...eus.cx>
To:	Alex Dubov <oakad@...oo.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Recent and not-so problems with tifm_sd driver

Alex Dubov wrote:
>> I don't actually think that is what happening. The block errors tend to trail a
>> bit behind, so the errors you are seeing are probably the result of the queue
>> being flushed out as you remove the card. I don't see any mmc debug messages
>> that indicate that is trying to send more mmc requests.
> 
> Yes, indeed - it does not issue new requests after remove. However, mmc_remove_host does not wait
> for all issued requests to complete and it is a problem.

I don't see how that is possible. mmc_block's remove routine waits for mmcqd to
exit, so there can't be any code still alive that has a request going. (I am
also completely unable to reproduce this problem here).

Add more printk:s do verify how the code in mmc_block executes.

Rgds
-- 
     -- Pierre Ossman

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