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i8254: Fix migration from older versions 

qdev conversion broke migration as the previous version used vmstate
instance IDs derived from the iobase. Fix it by registering a legacy
alias.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Jan Kiszka 2011-03-06 16:09:49 +01:00 committed by Blue Swirl
parent 00914b7d97
commit ca22a3a375
1 changed files with 2 additions and 0 deletions
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2
hw/i8254.c
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@ -520,6 +520,8 @@ static int pit_initfn(ISADevice *dev)
register_ioport_read(pit->iobase, 3, 1, pit_ioport_read, pit);
isa_init_ioport(dev, pit->iobase);
qdev_set_legacy_instance_id(&dev->qdev, pit->iobase, 2);
return 0;
}