From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Fri, 25 Jan 2008 17:57:41 +0000 (+0100)
Subject: firewire: enforce access order between generation and node ID, fix "giving up on... 
X-Git-Tag: v2.6.25-rc1~1133^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b5d2a5e04e6a26cb3f77af8cbc31e74c361d706c;p=pandora-kernel.git

firewire: enforce access order between generation and node ID, fix "giving up on config rom"

fw_device.node_id and fw_device.generation are accessed without mutexes.
We have to ensure that all readers will get to see node_id updates
before generation updates.

Fixes an inability to recognize devices after "giving up on config rom",
https://bugzilla.redhat.com/show_bug.cgi?id=429950

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

Reviewed by Nick Piggin <nickpiggin@yahoo.com.au>.

Verified to fix 'giving up on config rom' issues on multiple system and
drive combinations that were previously affected.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
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