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commitf304098313upstream. Use a helper function to check that a port needs to use half duplex communication, replacing several occurrences of multi-line bit checking. Fixes:b389f173aa("tty/serial: atmel: RS485 half duplex w/DMA: enable RX after TX is done") Cc: stable <stable@vger.kernel.org> Signed-off-by: Razvan Stefanescu <razvan.stefanescu@microchip.com> Acked-by: Richard Genoud <richard.genoud@gmail.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.