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Depending on rotation settings, fbcon sets different callback functions in struct fbcon_par from within fbcon_set_bitops(). Declare the callback functions in the new type struct fbcon_bitops. Then only replace the single bitops pointer in struct fbcon_par. Keeping callbacks in constant instances of struct fbcon_bitops makes it harder to exploit the callbacks. Also makes the code slightly easier to maintain. For tile-based consoles, there's a separate instance of the bitops structure. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://lore.kernel.org/r/20250909124616.143365-5-tzimmermann@suse.de
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.