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From: Roland Dreier <rdreier@cisco.com>
To: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>, linux-kernel@vger.kernel.org
Subject: Re: [bisected] Latest git not seeing HD with sata_nv
Date: Tue, 22 Apr 2008 18:25:34 -0700	[thread overview]
Message-ID: <adave29cqgh.fsf@cisco.com> (raw)
In-Reply-To: <adazlrlcw9f.fsf@cisco.com> (Roland Dreier's message of "Tue, 22 Apr 2008 16:20:12 -0700")

 > It seems that commit 305d2a1a ("libata: unify mechanism to request
 > follow-up SRST") causes sata_nv not to see the HD on a system I have
 > here; with current git (80750147), I get this in my bootlog:

I wonder if this is related to the code

static int nv_hardreset(struct ata_link *link, unsigned int *class,
			unsigned long deadline)
{
	unsigned int dummy;

	/* SATA hardreset fails to retrieve proper device signature on
	 * some controllers.  Don't classify on hardreset.  For more
	 * info, see http://bugzilla.kernel.org/show_bug.cgi?id=3352
	 */
	return sata_sff_hardreset(link, &dummy, deadline);
}

It seems especially suspicious given that 305d2a1a touches
sata_sff_hardreset...

 - R.

  parent reply	other threads:[~2008-04-23  1:25 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-22 23:20 [bisected] Latest git not seeing HD with sata_nv Roland Dreier
2008-04-22 23:47 ` Yinghai Lu
2008-04-23  1:25 ` Roland Dreier [this message]
2008-04-23  1:38   ` Roland Dreier
2008-04-23  1:51     ` Tejun Heo
2008-04-23  1:35 ` Tejun Heo

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