Re: [PATCH] Re: Linux v2.6.22-rc3

[Jeff Garzik]

On Fri, Jun 08, 2007 at 05:02:24PM +0900, Tejun Heo wrote:
> I don't think the first one is probable considering BSY is supposed to
> set when SRST is received.  This is pretty fundamental in the protocol
> and necessary for the device to work properly as master, so I think this
> is one of few things we can rely upon.

See a URL I posted earlier in this thread.  With dumb ATAPI devices we
actually have to wait a bit for BSY to be asserted.  Not only at reset,
but also for every command.


> How about limiting nsect/lbal wait duration?  Say, 100ms or 500ms?  That
> can somewhat ease our paranoia and should show acceptable behavior for
> braindead devices too.

That's quite reasonable.

	Jeff



P.S.  We can probably reduce the msleep(150) sprinkled about the code to
msleep(100), for the dumb-ATAPI-device wait.
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