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The need to handle the FSL variant of 8250 in a special way is also present without console support. So soften the dependency for SERIAL_8250_FSL from SERIAL_8250_CONSOLE to SERIAL_8250. To handle SERIAL_8250=m, the FSL code can be modular, too, thus SERIAL_8250_FSL becomes tristate. Compiling 8250_fsl as a module requires adding a module license so this is added, too. While add it also add a appropriate module description. As then SERIAL_OF_PLATFORM=y + SERIAL_8250_FSL=m is a valid combination (if COMPILE_TEST is enabled on a platform that is neither PPC, ARM nor ARM64), the check in 8250_of.c must be weakened a bit. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Message-ID: <20230609133932.786117-3-u.kleine-koenig@pengutronix.de> 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.