Hello.
Alan Cox wrote:
totally wrong in that part from the very start -- CF devices don't report ATA
standard support in word 80, that's forbidden (!) by the CF specs since at
least 2.1.
And the ATA world says that if word 80 doesn't report any standards then
the word is potentially undefined....welcome to PC hell
Perhaps the best we can do is to test
word 80 == 0 && word 83 bit set && word 83 valid
Fortunately the use is almost entirely to print the right CFA/ATA string
at boot ?
There was intent to use it for filtering out DMA modes on incapable
CF slots, for the lack of better criterion -- these slots usually has a
master/slave switch connected, so can't be tied to the drive #, only to
the channel # and the board's DMI ID.
Now Sergei if you'd said that explicitly (or if you did before I didn't
see it) it would have been a bit simpler to work out why you were arguing
the needed for these changes.
I was arguing entirely out of thinking that the version check is not
really needed. The fact that CF spec. forbids reporting it was a
surprise to me as well.
Alan
MBR, Sergei
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