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commit7865dd2493upstream. Commitb4a1ed0cd1("fbdev: make FB_BACKLIGHT a tristate") forgot to update fbtft breaking its backlight support when FB_BACKLIGHT is a module. Since FB_TFT selects FB_BACKLIGHT there's no need for this conditional so just remove it and we're good. Fixes:b4a1ed0cd1("fbdev: make FB_BACKLIGHT a tristate") Cc: <stable@vger.kernel.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://lore.kernel.org/r/20211105204358.2991-1-noralf@tronnes.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.