[linux-pm] Bugs in MMC [was: [Bug 10030] Suspend doesn't work when SD card is inserted]

Pavel Machek pavel at ucw.cz
Thu Mar 6 07:55:53 PST 2008


On Tue 2008-03-04 16:00:51, Alan Stern wrote:
> On Tue, 4 Mar 2008, David Brownell wrote:
> 
> > > What's wrong with a superfluous probe at resume time, besides the waste 
> > > of a few milliseconds?
> > 
> > I'm more concerned with the undesirable removal of devices at suspend
> > time ... ones with mounted filesystems etc.
> 
> On that we can agree.  The removal is done if the host doesn't define a 
> resume method.  There doesn't seem to be any point to that, given that 
> the probing during resume will determine whether a card has in fact 
> been removed.

Hmm, if the driver is sleeping too deeply, user might have removed the
card and put in different one, without driver noticing. That would be
_bad_.
-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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