From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Bottomley <James.Bottomley@suse.de>
Subject: Re: [RFC] lldd_I_T_nexus_reset use in sas_ata.c
Date: Thu, 23 Dec 2010 15:05:06 -0600
Message-ID: <1293138306.10141.14.camel@mulgrave.site>
References: <AANLkTimTDLOv8A7Vq3y6-8L4VA8PpU135fSQZH8SgaKQ@mail.gmail.com>
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To: Chuck Tuffli <ctuffli@gmail.com>
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On Thu, 2010-12-23 at 11:34 -0800, Chuck Tuffli wrote:
> Can some shed light on why sas_ata_phy_reset() does an I_T nexus
> reset? It seems like calling sas_phy_reset() might be more accurate in
> this case. Thanks.

It needs an ATA reset that propagates.  ATA resets don't key off SAS phy
resets, they have a separate reset sequence, which is triggered by the
I_T nexus reset.

James