Re: [BUG] ide dma_timer_expiry, then hard lockup

On Tue, 19 Jun 2007 18:10:04 +0400
Sergei Shtylyov [off-list ref] wrote:

Hello.

Alan Cox wrote:

quoted

quoted

I can prepare a patch, but only with a lot of guidance. I can test 
& debug, I'm highly motivated just right now ... 

quoted

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 -> ...

Alan