On Iau, 2006-01-19 at 00:41 +0100, Helmut Toplitzer wrote:
> Ok. Was just a bit digging through the sourcecode. Found a
> function called disable_hlt. Some further digging.
> Found in drivers/block/floppy.c a usage of disable_hlt.
> It's called (if I haven't missunderstood something) 
> whenever a DMA transfer is setup. enable_hlt is called
> when a transfer stops/is cancled etc...

Yes this deals with some errata cases

> Does such thing makes sense for IDE DMA-transfers too? 
> (Maybe I've missed something)

Only for the CS5510 Cyrix as far as I know, and I really ought to fix
that in the new libata driver.

Generally speaking hlt is good, it takes the CPU off the bus and frees
it up for the other users.



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