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Thomas Zimmermann 30543d363d fbdev/sm501fb: Initialize fb_ops to fbdev I/O-memory helpers
Initialize each instance of struct fb_ops with fbdev initializer
macros for framebuffers in I/O address space. Set the read/write,
draw and mmap callbacks to the correct implementation and avoid
implicit defaults. Also select the necessary I/O helpers in Kconfig.

Fbdev drivers sometimes rely on the callbacks being NULL for a
default implementation to be invoked; hence requiring the I/O
helpers to be built in any case. Setting all callbacks in all
drivers explicitly will allow to make the I/O helpers optional.
This benefits systems that do not use these functions.

No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230927074722.6197-37-tzimmermann@suse.de
2023-10-19 12:56:43 +02:00
Documentation dt-bindings: display: Add SSD132x OLED controllers 2023-10-18 09:53:33 +02:00
LICENSES
arch fbdev: Replace fb_pgprotect() with pgprot_framebuffer() 2023-10-12 09:20:46 +02:00
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drivers fbdev/sm501fb: Initialize fb_ops to fbdev I/O-memory helpers 2023-10-19 12:56:43 +02:00
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include drm/gpuvm: Dual-licence the drm_gpuvm code GPL-2.0 OR MIT 2023-10-17 10:55:30 +02:00
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MAINTAINERS dt-bindings: display: Add SSD132x OLED controllers 2023-10-18 09:53:33 +02:00
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README

README

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.