netdev - Re: DPAA Ethernet traffice troubles with Linux kernel

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Date:   Fri, 19 Jan 2018 08:00:53 +0000
From:   Joakim Tjernlund <Joakim.Tjernlund@...inera.com>
To:     "madalin.bucur@....com" <madalin.bucur@....com>,
        "andrew@...n.ch" <andrew@...n.ch>
CC:     "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "madskateman@...il.com" <madskateman@...il.com>
Subject: Re: DPAA Ethernet traffice troubles with Linux kernel

On Thu, 1970-01-01 at 00:00 +0000, Madalin-cristian Bucur wrote:
> 
> > -----Original Message-----
> > From: Joakim Tjernlund [mailto:Joakim.Tjernlund@...inera.com]
> > Sent: Tuesday, January 16, 2018 7:58 PM
> > To: andrew@...n.ch
> > Subject: Re: DPAA Ethernet traffice troubles with Linux kernel
> > 
> > On Thu, 1970-01-01 at 00:00 +0000, Andrew Lunn wrote:
> > > 
> > > Hi Joakim
> > > 
> > > You appear to be using an old kernel. Take a look at:
> > 
> > Not really, I am using 4.14.x and I don't think that is old. Seems like
> > this
> > patch hasn't been sent to 4.14.x.
> > 
> > I wonder if I might be missing something else, we just moved to 4.14 and
> > notic that all
> > our fixed PHYs are non functioning:
> > fsl_mac ffe4e2000.ethernet: FMan MEMAC
> > fsl_mac ffe4e2000.ethernet: FMan MAC address: 00:06:9c:0b:06:20
> > fsl_mac dpaa-ethernet.0: __devm_request_mem_region(mac) failed
> > fsl_mac: probe of dpaa-ethernet.0 failed with error -16
> > fsl_mac ffe4e4000.ethernet: FMan MEMAC
> > fsl_mac ffe4e4000.ethernet: FMan MAC address: 00:06:9c:0b:06:21
> > fsl_mac dpaa-ethernet.1: __devm_request_mem_region(mac) failed
> > fsl_mac: probe of dpaa-ethernet.1 failed with error -16
> > fsl_mac ffe4e6000.ethernet: FMan MEMAC
> > fsl_mac ffe4e6000.ethernet: FMan MAC address: 00:06:9c:0b:06:22
> > fsl_mac dpaa-ethernet.2: __devm_request_mem_region(mac) failed
> > fsl_mac: probe of dpaa-ethernet.2 failed with error -16
> > fsl_mac ffe4e8000.ethernet: FMan MEMAC
> > fsl_mac ffe4e8000.ethernet: FMan MAC address: 00:06:9c:0b:06:23
> > fsl_mac dpaa-ethernet.3: __devm_request_mem_region(mac) failed
> > fsl_mac: probe of dpaa-ethernet.3 failed with error -16
> > 
> > Feels like FMAN still think there are real PHYs there ?
> 
> Hi Joakim,
> 
> These errors are issued when trying to probe the second time the same
> MAC node. The issue was introduced by this commit:
> 
> commit 4d8ee1935bcd666360311dfdadeee235d682d69a
> Author: Florian Fainelli <f.fainelli@...il.com>
> Date: Tue Aug 22 15:24:47 2017 -0700
> fsl/man: Inherit parent device and of_node
> 
> and was later addressed by this patch set:
> 
> http://patchwork.ozlabs.org/project/netdev/list/?series=8462&state=*
> 
> Even with these errors printed, all is working fine, it's just the
> second probing that fails. Adding the latter patches or reverting
> the one above makes the errors prints dissapear.

Looking at the above patch seriers I see it is in state Accepted and has been there
since 2017-10-16
That seems like a awful long to wait in before getting into Linux, is there something
holding these patches back ?

 Jocke