Re: [PATCH ide] : Increase WAIT_DRQ to support slow CF cards
From: David Miller
Date: Mon Oct 26 2009 - 21:19:10 EST
From: Robert Hancock <hancockrwd@xxxxxxxxx>
Date: Mon, 26 Oct 2009 19:07:18 -0600
> libata only busy-waits for 50 microseconds, if not set then it sleeps
> for 2ms and polls for another 10 microseconds, if still not set it
> tries the whole thing again at 16ms intervals. Only after (typically)
> 30 seconds does it give up.
Porting that kind of logic over to IDE is a non-starter.
It's easier to get people to move over to using the ATA layer for
their devices.
Meanwhile we should provide a way for things to work, and
realistically the only way to do that currently is to bump the
WAIT_DRQ value to some large number.
And that's exactly the kind of patch I'm willing to accept for this.
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