On Mon, Sep 17, 2007 at 07:00:03AM +0200, Tejun Heo wrote:
> I wonder whether we should be using similar check in generic path too.
> We have quite a few cases where MWDMA ATAPI devices choking on commands
> with small transfer sizes. I don't think we'll experience significant
> performance regression with this applied and even if there is some, it's
> far better to have slightly slower working device.
>
> What do you guys think?
I think to start with someone should fix the ATAPI state machine. Stick
a BUG() in the driver if dma start is called when the atapi command data
size is zero
Alan
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