netdev - Re: [PATCH] sbc8641: drop bogus PHY IRQ entries from DTS file

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Message-ID: <20151209020443.GL22885@windriver.com>
Date:	Tue, 8 Dec 2015 21:04:43 -0500
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	Michael Ellerman <mpe@...erman.id.au>
CC:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>, <netdev@...r.kernel.org>,
	<linuxppc-dev@...ts.ozlabs.org>, Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH] sbc8641: drop bogus PHY IRQ entries from DTS file

[Re: [PATCH] sbc8641: drop bogus PHY IRQ entries from DTS file] On 09/12/2015 (Wed 12:10) Michael Ellerman wrote:

> On Tue, 2015-12-08 at 17:44 -0500, Paul Gortmaker wrote:
> 
> > This file was originally cloned off of the MPC8641D-HPCN reference
> > platform, which actually had a PHY IRQ line connected.  However
> > this board does not.  The bogus entry was largely inert and went
> > undetected until commit 321beec5047af83db90c88114b7e664b156f49fe
> > ("net: phy: Use interrupts when available in NOLINK state") was
> > added to the tree.
> > 
> > With the above commit, the board fails to NFS boot since it sits
> > waiting for a PHY IRQ event that of course never arrives.  Removing
> > the bogus entries from the DTS file fixes the issue.
> 
> Commit 321beec5047a ("net: phy: Use interrupts when available in NOLINK state")
> went into 4.4-rc2, so this is a fix for 4.4 right?

Correct, but I'm guessing there are not thousands of users of this board
out there, so it probably doesn't matter a whole lot if it goes in the
same release where the regression happened or one release later...

P.
--

> 
> cheers
> 
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