powerbook hang from post-sleep cdrom access - fix

[Michael Schmitz]

> I think I have a fix to prevent a system hang when trying to access a cdrom
> after sleeping.  I have a small util "wakebay" that simply does a
> CDROM_MEDIA_CHANGED ioctl on a specified device.  I added a the line "wakebay
> /dev/hdc" to PMUD's wakeup script on my PDQ.  This seems to get the desired
> response from the drive, in that it locks the door and spins the disk when it
> should, and if its not there, mounted, or otherwise, does nothing.
>
> my code can be grabbed from http://www.execpc.com/~jpgarcia
>
> Can this be done automatically at the kernel level?

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

	Michael


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