]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
pata_it821x: resume from hibernation fails with RAID volume
authorOndrej Zary <linux@rainbow-software.org>
Wed, 11 Feb 2009 21:08:43 +0000 (13:08 -0800)
committerJeff Garzik <jgarzik@redhat.com>
Wed, 25 Feb 2009 20:22:44 +0000 (15:22 -0500)
commit7ba07d16bd62f931efec1fc8e63bf1aeebfe42a9
tree0cbe0e20e4c7ea2bf4e96d7b3a2966fe5686eb46
parentc15d8a6499d04e5d2cac07f8120f207bb275f60f
pata_it821x: resume from hibernation fails with RAID volume

Hibernation didn't work for me since I started to use IT8212 controller.
I did some debugging (booting with no_console_suspend init=/bin/sh).

Found that resume fails (2.6.28) with "serial number mismatch 'some
garbage' != 'some other garbage'" and "revalidation failed" messages.
That's because the controller firmware fills different serial number in
the IDENTIFY every boot.

The patch below fixes the resume simply clearing the serial number.  The
proper fix would be probably to fill in the serial number of the RAID
volume instead.  I assume that there must be something like that stored on
the drives but I don't know where.

Fix resume on pata_it821x RAID volume by clearing the serial number in
IDENTIFY data, which is otherwise different on each boot.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
drivers/ata/pata_it821x.c