linux-kernel - Re: [PATCH 2/3] mmc: Export ios settings for a host through debugfs

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Date:	Sat, 28 Jun 2008 19:02:58 +0200
From:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
To:	Greg KH <greg@...ah.com>
Cc:	Pierre Ossman <drzeus-mmc@...eus.cx>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] mmc: Export ios settings for a host through debugfs

On Sat, 28 Jun 2008 09:43:43 -0700
Greg KH <greg@...ah.com> wrote:

> > sh-3.2# rmmod atmel-mci < /sys/kernel/debug/mmc0/ios/clock
> > mmc0: card b368 removed
> > atmel_mci atmel_mci.0: Lost dma0chan1, falling back to PIO
> > sh-3.2# ls /sys/kernel/debug/mmc0/
> > ios
> > 
> > But I'm not sure if that case can be handled in any sane manner.  
> 
> I think we have always been failing this case as I know securityfs also
> has this same issue, and the code base is pretty much identical.
> 
> So don't worry that this patch caused this issue.

Yeah, I'm pretty sure this issue was there before too, when the driver
kept track of things. I just never tested it.

The main reason I tested it now was to make sure it didn't hang, and it
didn't.

> I'll queue it up unless there are any other objections to it.

Thanks.

Haavard
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