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Designware UART has an optional feature to enable Fractional Baud Rate Divisor (DLF) through the FRACTIONAL_BAUD_DIVISOR_EN configuration parameter, and it is not dependent on ADDITIONAL_FEATURES. dw8250_setup_port() checks DLF to determine dlf_size only when UART Component Version (UCV) is non-zero. As mentioned above DLF and UCV are independent features. Move the logic corresponding to DLF size calculation ahead of the UCV check to prevent early return. Otherwise, dlf_size will be zero and driver will not be able to use the controller's fractional baud rate divisor (DLF) feature. Signed-off-by: Vamshi Gajjela <vamshigajjela@google.com> Link: https://lore.kernel.org/r/20231126160420.2442330-1-vamshigajjela@google.com 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.