linux-kernel - Re: [ 06/59] Fix non TBI PHY access; a bad merge undid bug fix in a previous commit.

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Date:	Mon, 16 Apr 2012 01:32:11 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Kenth Eriksson <kenth.eriksson@...nsmode.com>,
	"David S. Miller" <davem@...emloft.net>, afleming@...escale.com
Subject: Re: [ 06/59] Fix non TBI PHY access; a bad merge undid bug fix in a
 previous commit.

On Sun, 2012-04-15 at 20:16 -0400, Paul Gortmaker wrote:
> On Thu, Apr 12, 2012 at 12:55 AM, Ben Hutchings <ben@...adent.org.uk> wrote:
> > On Wed, 2012-04-11 at 16:10 -0700, Greg KH wrote:
> >> 3.2-stable review patch.  If anyone has any objections, please let me know.
> >>
> >> ------------------
> >>
> >>
> >> From: Kenth Eriksson <kenth.eriksson@...nsmode.com>
> >>
> >> [ Upstream commit 464b57da56910c8737ede75ad820b9a7afc46b3e ]
> >>
> >> The merge done in commit b26e478f undid bug fix in commit c3e072f8
> >> ("net: fsl_pq_mdio: fix non tbi phy access"), with the result that non
> >> TBI (e.g. MDIO) PHYs cannot be accessed.
> > [...]
> >
> > This doesn't look relevant to 3.2.
> >
> > $ git describe --contains b26e478f
> > v3.3-rc1~182^2~207
> > $ git describe --contains c3e072f8
> > v3.3-rc1~182^2~598
> > $ git show c3e072f8 | head -8
> > commit c3e072f8a6c5625028531c40ec65f7e301531be2
> > Author: Baruch Siach <baruch@...s.co.il>
> > Date:   Mon Nov 14 08:21:30 2011 +0200
> >
> >    net: fsl_pq_mdio: fix non tbi phy access
> >
> >    Since 952c5ca1 (fsl_pq_mdio: Clean up tbi address configuration) .probe returns
> >    -EBUSY when the "tbi-phy" node is missing. Fix this.
> > $ git describe --contains 952c5ca1
> > v3.3-rc1~182^2~603
> > $ git rev-list v3.2..v3.2.14 drivers/net/ethernet/freescale/fsl_pq_mdio.c
> 
> I think 952c5ca1 is a red herring;  What is called out as the regression
> commit appeared in tree earlier than that as 28d8ea2d568.

I see, the same patch was applied on two different branches and one of
those got into 3.2.

This fix was included in 3.2.15 despite my objection, so everyone should
be happy now.

Ben.

-- 
Ben Hutchings
This sentence contradicts itself - no actually it doesn't.

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