powerbook hang from post-sleep cdrom access - fix

[Benjamin Herrenschmidt]

>
>Should be called from the IDE notify chain perhaps. See the last function
>in ide-pmac().

Yep, this should be done juste before the pmac_ide_dma_onoff() call in
ide-pmac.c/idepmac_notify_sleep(). It should be done regardless of the
disk beeing in a bay or not since new machines will ultimately support
sleep on desktop boxes too. Something like

switch(drive->media) {
  case ide_disk:
    // spin up the disk
    break;
  case ide_cdrom:
    // do whatever you need here
    break;
  case ide_floppy:
    // do whatever you need here
    break;
}

Note that at his point, IDE interrupts have been re-enabled, so we should
be careful about the way the IDE layer is called from here.


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