Re: [PATCH] libata drain fifo on stuck DRQ HSM violation

From: Jeff Garzik
Date: Fri Sep 28 2007 - 21:06:22 EST

Alan Cox wrote:
Drain up to 512 words from host/bridge FIFO on stuck DRQ HSM violation,
rather than just getting stuck there forever.

Why 512 words ?

Though I have queued Mark's patch to be applied, my gut feeling would lean towards a single DRQ block, rather than 512.

- ata_chk_status(ap);
+ ata_drain_fifo(ap, qc);


might be wiser

If someone needs that, they can override the error handler with their own. No need for a new op.


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