Messages in this thread | | | Subject | Re: IDE todo list | From | Alan Cox <> | Date | 22 Mar 2003 19:07:21 +0000 |
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On Sat, 2003-03-22 at 17:24, Petr Vandrovec wrote: > any hope that promise 20265 driver could detect non-udma66 cable > and run at udma2 only? BIOS properly detect this, but Linux driver > wants to use udma100, and usually dies hard with CRC errors during > reading of PTBL extended chain (it also should not lockup when > CRC error happens 5 times in a row, but ...).
The five CRC in a row is what causes the DMA->PIO changedown. That implies there is a real bug in the error handling locking, or in the driver handling of that.
Can you throw some printks into the ide code and see what kind of a death you get when it tries to change back to PIO.
As to the cable stuff, I'll take a look at it in time, but both need fixing
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