linux-kernel - Re: [PATCH] fsl/fman: remove of

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Message-Id: <20171002.160445.737065995396076298.davem@davemloft.net>
Date:   Mon, 02 Oct 2017 16:04:45 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     madalin.bucur@....com
Cc:     netdev@...r.kernel.org, f.fainelli@...il.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fsl/fman: remove of_node

From: Madalin Bucur <madalin.bucur@....com>
Date: Mon, 2 Oct 2017 13:31:37 +0300

> The FMan MAC driver allocates a platform device for the Ethernet
> driver to probe on. Setting pdev->dev.of_node with the MAC node
> triggers the MAC driver probing of the new platform device. While
> this fails quickly and does not affect the functionality of the
> drivers, it is incorrect and must be removed. This was added to
> address a report that DSA code using of_find_net_device_by_node()
> is unable to use the DPAA interfaces. Error message seen before
> this fix:
> 
> fsl_mac dpaa-ethernet.0: __devm_request_mem_region(mac) failed
> fsl_mac: probe of dpaa-ethernet.0 failed with error -16
> 
> Signed-off-by: Madalin Bucur <madalin.bucur@....com>

Is the DSA issue no longer something we need to be concerned
about?  If not, why?  You have to explain this.