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Ruan Jinjie says: ==================== net: Return PTR_ERR() for fixed_phy_register() fixed_phy_register() returns not only -EIO or -ENODEV, but also -EPROBE_DEFER, -EINVAL and -EBUSY. The Best practice is to return these error codes with PTR_ERR(). ==================== 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.