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6ff0497402
Some platforms are not setting of_node in the driver. On these platforms defining gpio-reserved-ranges on device tree leads to kernel crash. It is due to some parts of the gpio core relying on the driver to set up of_node,while other parts do themselves.This inconsistent behaviour leads to a crash. gpiochip_add_data_with_key() calls gpiochip_init_valid_mask() with of_node as NULL. of_gpiochip_add() fills "of_node" and calls of_gpiochip_init_valid_mask(). The fix is to move the assignment to chip->of_node from of_gpiochip_add() to gpiochip_add_data_with_key(). Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.