Alan Cox wrote:
>> Ah, no interrupts at all...
>> The old IDE core in drivers/ide/ certainly doesn't support polling mode
>> and IRQ-less devices. AFAICS, libata also doesn't support the latter...
>
> libata has much of the framework to do this as it originally did all of
> its PIO work much this way. That is probably the most productive place to
> start hacking.
Yep.
The only real restriction in libata is in ata_device_add(), which
unconditionally registers an irq handler. Make a few changes there, add
a few flags, and the existing polling code will kick in.
Once we have higher priority stuff sorted, I would like to look into
things like activating the polling code when it becomes obvious that the
system is not delivering interrupts.
Jeff
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