Re: Linux 2.5.67-ac2: ide reset issue

[Alan Cox <alan@redhat.com>]

>     I don't know if there's enough reason to change reset semantics
> now to wait for completion, so that the next call be free of race.
> and  I once had a simpler fix to let it delay another 50ms, that works
> on my box but seems not a thorough one. does it help?

BWGROUP(drive)->busy should never reach zero until the reset is
done. The 50mS miught be enough that this occurs, as might waiting
for HWGROUP(drive)->busy hitting 0. I don't yet understand why it
matters, and to fix it properly I have to figure that out.

If you need reliable reset for something like a test harness, or
IDE drive tester its a usable workaround, but I need to fix it
properly (eventually)

> +			/* wait for another 50ms */
> +			mdelay(50);

In your test set is HWGROUP(drive)->busy always zero after the
mdelay ?