Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 19 Jun 2007 18:24:38 +0400 | From | Sergei Shtylyov <> | Subject | Re: [BUG] ide dma_timer_expiry, then hard lockup |
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Alan Cox wrote:
>>>>I can prepare a patch, but only with a lot of guidance. I can test >>>>& debug, I'm highly motivated just right now ...
>>>If you've got a nice repeatable problem please try using the libata >>>driver. That handles the error paths differently and doesn't try a FIFO >>>drain which might matter in this case I guess.
>> FIFO drain for DMA commands?
> Welcome to the old IDE layer which I am so glad I left behind 8)
> ide_ata_error will try and do a PIO flush regardless of the command type > if DRQ_STAT is asserted. See ide_dma_intr -> ide_error -> ...
Indeed... but the thing is we don't know what's asserted in this case -- remember, it's reading the status register that locks everything up...
> Alan
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