Re: Rpi3: no ethernet in 4.13: bisected to patch 'USB: of: fix root-hub device-tree node handling'

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Am 02.08.2017 um 09:03 schrieb Hans Verkuil:
> When testing with my Raspberry Pi 3 and the 4.13-rcX mainline kernel
> I discovered that there was no ethernet. After bisecting I got to commit
> 2bf69867 ('USB: of: fix root-hub device-tree node handling').
>
> With that commit lsusb outputs:
>
> rpi3: ~ # lsusb
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> After reverting just that commit (I'm on 4.13-rc3 now) ethernet is
> restored and lsusb gives me:
>
> rpi3: ~ $ lsusb
> Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
> Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> I don't speak USB, so I have no idea why this patch causes these issues,
> but I am happy to test patches.

Thanks for finding.

Just a note, Andreas Färber also found a regression in 4.13-rc1, which
is related to USB & DMA [1].
Unfortunately i wasn't able to bisect this issue. I think it's related
to the configuration.

[1] -
http://lists.infradead.org/pipermail/linux-rpi-kernel/2017-July/006658.html

>
> Regards,
>
> 	Hans
>
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