43a354a21a
This code checks "if (parent_hw)" is non-NULL, but then it has more checks if parent_hw is non-NULL on the lines inside the if statement. It is a bit confusing. For the else statement, keep in mind that at the start of the function we checked: if (!(parent_name || parent_hw)) return ERR_PTR(-EINVAL); That check ensures that if parent_hw is NULL that means that parent_name is non-NULL. At least one must always be non-NULL. So here again, the checks inside the if statement can be removed. In the original code, it was a bit confusing and you could easily get the impression that "init.num_parents" could be zero. When we remove the unnecessary checking it's more obvious that it's always set to 1. Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://lore.kernel.org/r/7782b4f1-deed-49dc-8207-b6ea06d7602f@moroto.mountain Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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.