Messages in this thread | | | Date | Wed, 23 Sep 2020 13:31:47 -0700 (PDT) | Subject | Re: [PATCH] net: fec: Keep device numbering consistent with datasheet | From | David Miller <> |
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From: Stefan Riedmueller <s.riedmueller@phytec.de> Date: Wed, 23 Sep 2020 16:25:28 +0200
> From: Christian Hemp <c.hemp@phytec.de> > > Make use of device tree alias for device enumeration to keep the device > order consistent with the naming in the datasheet. > > Otherwise for the i.MX 6UL/ULL the ENET1 interface is enumerated as eth1 > and ENET2 as eth0. > > Signed-off-by: Christian Hemp <c.hemp@phytec.de> > Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Device naming and ordering for networking devices was never, ever, guaranteed.
Use udev or similar.
> @@ -3691,6 +3692,10 @@ fec_probe(struct platform_device *pdev) > > ndev->max_mtu = PKT_MAXBUF_SIZE - ETH_HLEN - ETH_FCS_LEN; > > + eth_id = of_alias_get_id(pdev->dev.of_node, "ethernet"); > + if (eth_id >= 0) > + sprintf(ndev->name, "eth%d", eth_id);
You can't ever just write into ndev->name, what if another networking device is already using that name?
This change is incorrect on many levels.
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