From: Mark Lord <liml@rtr.ca>
To: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>,
IDE/ATA development list <linux-ide@vger.kernel.org>
Subject: Re: [PATCH/RFC]: recovery from power-up-in-standby feature
Date: Sun, 04 Mar 2007 22:55:12 -0500 [thread overview]
Message-ID: <45EB94A0.4010603@rtr.ca> (raw)
In-Reply-To: <45EB5825.501@garzik.org>
Jeff wrote:
> I think we would want to test bit 6 of IDENTIFY DEVICE word 83, issue SET FEATURES - SPIN UP command if set,
> otherwise do a READ VERIFY or some other media access command
The word-2 signature values already give us that information,
and I'm not certain that we can rely upon word 83 even being
"present" when a drive has not spun up. I see lots of zeros
in the upper words of the IDENTIFY info from drives in this state.
Cheers
prev parent reply other threads:[~2007-03-05 3:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-04 20:43 [PATCH/RFC]: recovery from power-up-in-standby feature Mark Lord
2007-03-04 22:32 ` Alan Cox
2007-03-04 22:04 ` Mark Lord
2007-03-04 23:37 ` Jeff Garzik
2007-03-05 3:55 ` Mark Lord [this message]
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