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The DRM_STM driver can be built independently of the framebuffer layer, but it causes a Kconfig warning: WARNING: unmet direct dependencies detected for FB_PROVIDE_GET_FB_UNMAPPED_AREA Depends on [n]: HAS_IOMEM [=y] && FB [=n] Selected by [y]: - DRM_STM [=y] && HAS_IOMEM [=y] && DRM [=y] && (ARCH_STM32 [=n] || ARCH_MULTIPLATFORM [=y]) Selecting FB_PROVIDE_GET_FB_UNMAPPED_AREA actually has no effect if CONFIG_FB is disabled, so we can make it a conditional 'select' instead. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190307155323.2949975-1-arnd@arndb.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 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.