From: Pierre Ossman <pierre@ossman.eu>
To: Matt Fleming <matt@console-pimps.org>
Cc: Stefan Bader <stefan.bader@canonical.com>,
Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org, Andy Whitcroft <apw@canonical.com>
Subject: Re: [PATCH] mmc: prevent dangling block device from accessing stale queues
Date: Thu, 4 Jun 2009 21:22:46 +0200 [thread overview]
Message-ID: <20090604212246.36762996@mjolnir.ossman.eu> (raw)
In-Reply-To: <20090604191513.GA5702@console-pimps.org>
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On Thu, 4 Jun 2009 20:15:13 +0100
Matt Fleming <matt@console-pimps.org> wrote:
>
> Maybe I'm missing something, but why is the device instance being
> destroyed during a suspend? E.g why do you have mmcblk0 before suspend and
> mmcblk1 after suspend?
Because the card gets powered down during suspend and we have no way of
detecting what has happened to it when we come back up. USB does the
same thing (although it has slightly more intelligent hardware which
can keep track of removal as long as the host has some power).
Rgds
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next prev parent reply other threads:[~2009-06-04 19:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-04 18:00 Stefan Bader
2009-06-04 18:29 ` Pierre Ossman
2009-06-04 19:00 ` Stefan Bader
2009-06-04 19:15 ` Matt Fleming
2009-06-04 19:22 ` Pierre Ossman [this message]
2009-06-04 19:23 ` Stefan Bader
2009-06-04 19:21 ` Pierre Ossman
2009-06-04 19:37 ` Stefan Bader
2009-06-10 21:02 ` Pavel Machek
2009-06-23 15:01 ` Stefan Bader
2009-07-01 11:09 ` Pierre Ossman
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