Re: [PATCH] Serialize CMD643 and CMD646 to fix a hardware bug with SSD

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> We are through this the second time and you're still not willing
> neither to listen nor to read the code.  We always did serialization
> for CMD646, we just used  hwif->chipset == ide_cmd646 (without using
> IDE_HFLAG_SERIALIZE flag):

> Agreed, though I wonder whether we should also provide module parameter to
> disable serializing on those chipsets for people not using SSDs...

Don't do it --- disks have cache and reading from the cache is as fast as 
reading from SSD (or even faster), so if there is some speed-race in the 
chip, there is a possibility that the data corruption happens with disks 
too --- just with lower probability.

If we don't know why the chip corrupts data, we must treat it as always 
corrupting data.

Mikulas
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