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Since commit 502df79b86 ("gpiolib: Warn on drivers still using
static gpiobase allocation") in gpio/for-next, one or more warnings are
printed during boot on systems where the pin controller also provides
GPIO functionality:
gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation.
Fix this for ARM-based SH/R-Mobile SoCs by:
1. Taking into account a non-zero GPIO base in the various GPIO chip
callbacks,
2. Switching to dynamic allocation of the GPIO base when support for
legacy function GPIOs is not enabled.
On SuperH SoCs using legacy function GPIOs, the GPIO bases of the GPIO
controller and the GPIO function controller must not be changed, as all
board files rely on the fixed GPIO_* and GPIO_FN_* definitions provided
by the various <cpu/sh*.h> header files.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/df2cf30ac4c3cbee726799f32b727c1ebe62819c.1668000684.git.geert+renesas@glider.be
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.