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Andy Shevchenko
0c997105ae
It seems the of_get_named_gpio() is solely used to check if the GPIO is present in DT as the function can return 0 if and only if it's present and it becomes in the global number space 0. But this quite likely shows that the code wasn't ever been tested on the systems when no GPIO is provided. In any case, the proper test is just to call of_property_present() without any attempts in requesting GPIO (as we haven't saved the number or descriptor anywhere in the code). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/20240307121912.3676850-1-andriy.shevchenko@linux.intel.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.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 reStructuredText 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.