https://bugzilla.novell.com/show_bug.cgi?id=229210#c69
--- Comment #69 from Tejun Heo 2007-10-10 04:30:25 MST ---
Werner, the five secs are just for debugging such that telling which causes the
first and second spindown is easy. And I'm afraid there isn't a way to tell
whether the BIOS is gonna spin down the disk or not. There was a case reported
on LKML. It turned out that the SMM code triggered by entering ACPI S4/5
states were issuing those commands && there's no way to tell what SMM code is
gonna do.
The only possible solution is to identify those BIOSen using DMI and skip
issuing spindown. I'm just a bit confused because John's case isn't a laptop.
BIOSen on stock mobos usually don't pull tricks like that.
And regarding compile failure, yeap, you need to include linux/delay.h. I
missed it because it builds fine w/o it on x86-64. Probably some arch header
file inclues it.
Thanks.
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