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SubjectDMA & PDC202XX issue
Hi,

I have a Via based mobo with Promise PDC20265 controller with a
Seagate ST3200822A disk attached, giving me IO errors whenever I touch
the disk. I'm using the PDC202XX_OLD driver and have forced DMA on. I
have tried 2.6.8 through up to 2.6.9-ac9 and 2.6.10-rc2, all give the
same error. I can easily reproduce it with a simple "hdparm -t -T
/dev/hde" but under "normal" use such as copying files from another
disk on another channel, the same thing happens.

hde: dma_intr: status=0xff { Busy }

ide: failed opcode was: unknown
hde: DMA disabled
PDC202XX: Primary channel reset.
PDC202XX: Secondary channel reset.

(a number of times)

ide2: reset timed-out, status=0xff
end_request: I/O error, dev hde, sector 11776
Buffer I/O error on device hde, logical block 1472

(many times)

Any ideas greatfully received.
I have put some system details at http://www.popey.com/promise.htm if
that helps.

Cheers,
Al.
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