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If the PHY is missing but expected, e.g. because of a typ0 in the dt file, it is not possible to open the interface. ip link returns: RTNETLINK answers: No such device It is not very obvious what the problem is. Add a netdev_err() in this case to make it easier to debug the issue. [ 21.409385] fec 2188000.ethernet eth0: Unable to connect to phy RTNETLINK answers: No such device Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.