From: David Miller <davem@davemloft.net>
To: hancockrwd@gmail.com
Cc: phdm@macqel.be, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH ide] : Increase WAIT_DRQ to support slow CF cards
Date: Mon, 26 Oct 2009 18:19:22 -0700 (PDT) [thread overview]
Message-ID: <20091026.181922.261475236.davem@davemloft.net> (raw)
In-Reply-To: <51f3faa70910261807h54f05f73j48b67067ee3dde70@mail.gmail.com>
From: Robert Hancock <hancockrwd@gmail.com>
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.
next prev parent reply other threads:[~2009-10-27 1:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-26 16:20 Philippe De Muyter
2009-10-27 0:34 ` Robert Hancock
2009-10-27 0:45 ` David Miller
2009-10-27 1:07 ` Robert Hancock
2009-10-27 1:19 ` David Miller [this message]
2009-10-27 1:40 ` Robert Hancock
2009-10-27 1:43 ` David Miller
2009-10-27 9:45 ` Philippe De Muyter
2009-10-27 10:24 ` Sergei Shtylyov
2009-10-31 13:56 ` Mark Lord
2009-12-03 5:57 ` David Miller
2009-12-03 8:55 ` Philippe De Muyter
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