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A prerequisite for PHYLIB to work in the absence of a struct net_device is to not access pointers to it. Changes are needed in the following areas: - Printing: In some places netdev_err was replaced with phydev_err. - Incrementing reference count to the parent MDIO bus driver: If there is no net device, then the reference count should definitely be incremented since there is no chance that it was an Ethernet driver who registered the MDIO bus. - Sysfs links are not created in case there is no attached_dev. - No netif_carrier_off is done if there is no attached_dev. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.