Date: Fri, 9 Jan 2009 21:00:24 +0100
From: Enrik Berkhan <Enrik.Berkhan@ge.com>
To: David Vrabel <david.vrabel@csr.com>
Cc: Pierre Ossman <drzeus-mmc@drzeus.cx>, linux-kernel@vger.kernel.org
Subject: Re: Reference counting of MMC host driver modules
Message-ID: <20090109200024.GA14754@ngeserver2.localdomain>
References: <49678443.8040909@ge.com> <49679570.3070403@csr.com>
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On Fri, Jan 09, 2009 at 06:20:32PM +0000, David Vrabel wrote:
> Enrik Berkhan wrote:
> > I've noticed recently that the MMC/SD block driver does not reference 
> > count the MMC/SD host driver module that it uses via the MMC/SD core 
> > layer. Thus, I can rmmod my host driver module while, for example, a 
> > partition on a SD card is mounted.
> 
> This is same as removing the card while it's in use.

I don't think so.

Being able to remove the card while it is in use is a bug of the
mechanical interface. Can't be fixed easily.

Being able to remove the module while it is in use is a bug of the
software. Can be fixed.

Enrik
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