120edd4c60
This will not allow simultaneous use of the same pin for GPIO and another function. If user use a pin in such way, an error would be reported, make it easier to debug. d401e000.pinctrl: pin PIN80 already requested by k1x-gpio:79; cannot claim for xxx Signed-off-by: Junzhong Pan <junzhong.pan@spacemit.com> Change-Id: I0aad1e6a55ac46c47537d18bdb8586779f290435
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.