netdev - Re: [PATCH] net: macb: Properly handle phylink on at91sam9x

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Message-Id: <20200804.160503.345018090282944608.davem@davemloft.net>
Date:   Tue, 04 Aug 2020 16:05:03 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     sr@...x.de
Cc:     netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        reto.schneider@...qvarnagroup.com, alexandre.belloni@...tlin.com,
        nicolas.ferre@...rochip.com
Subject: Re: [PATCH] net: macb: Properly handle phylink on at91sam9x

From: Stefan Roese <sr@...x.de>
Date: Tue,  4 Aug 2020 14:17:16 +0200

> I just recently noticed that ethernet does not work anymore since v5.5
> on the GARDENA smart Gateway, which is based on the AT91SAM9G25.
> Debugging showed that the "GEM bits" in the NCFGR register are now
> unconditionally accessed, which is incorrect for the !macb_is_gem()
> case.
> 
> This patch adds the macb_is_gem() checks back to the code
> (in macb_mac_config() & macb_mac_link_up()), so that the GEM register
> bits are not accessed in this case any more.
> 
> Fixes: 7897b071ac3b ("net: macb: convert to phylink")
> Signed-off-by: Stefan Roese <sr@...x.de>

Applied and queued up for -stable, thanks.