linux-kernel - Re: boot failure with 4.13.0-rc6 due to ATA errors

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Message-ID: <20170829153037.GN491396@devbig577.frc2.facebook.com>
Date:   Tue, 29 Aug 2017 08:30:37 -0700
From:   Tejun Heo <tj@...nel.org>
To:     David Ahern <dsahern@...il.com>
Cc:     Christoph Hellwig <hch@....de>, linux-ide@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Robert Elliott <elliott@....com>
Subject: Re: boot failure with 4.13.0-rc6 due to ATA errors

On Tue, Aug 29, 2017 at 09:08:05AM -0600, David Ahern wrote:
> On 8/29/17 6:42 AM, Christoph Hellwig wrote:
> > ---
> > From e661047ec3a25587648b07c02a687a7dac778f3b Mon Sep 17 00:00:00 2001
> > From: Christoph Hellwig <hch@....de>
> > Date: Tue, 29 Aug 2017 14:35:50 +0200
> > Subject: libata: check for trusted computing in IDENTIFY DEVICE data
> > 
> > ATA-8 and later mirrors the TRUSTED COMPUTING SUPPORTED bit in word 48 of
> > the IDENTIFY DEVICE data.  Check this before issuing a READ LOG PAGE
> > command to avoid issues with buggy devices.  The only downside is that
> > we can't support Security Send / Receive for a device with an older
> > revision due to the conflicting use of this field in earlier
> > specifications.

Christoph, I'm gonna revert the horkage patch and apply this one.  If
you can think of a better way to do this, please let me know.

Thanks.

-- 
tejun