From: Clemens Ladisch <clemens@ladisch.de>
Date: Wed, 16 Feb 2011 09:32:11 +0000 (+0100)
Subject: firewire: ohci: prevent iso completion callbacks after context stop
X-Git-Tag: v2.6.39-rc1~400^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e81cbebdfc384f9c2ae91225f16ef994118e5e2c;p=pandora-kernel.git

firewire: ohci: prevent iso completion callbacks after context stop

To prevent the iso packet callback from being called after
fw_iso_context_stop() has returned, make sure that the
context's tasklet has finished executing before that.

This fixes access-after-free bugs that have so far been
observed only in the upcoming snd-firewire-speakers driver,
but can theoretically also happen in the firedtv driver.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---

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