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Revert commitecb988a3b7: tty: serial: 8250: 8250_core: NXP SC16C2552 workaround The above commit causes userland application to no longer write correctly its first write to a dumb terminal connected to /dev/ttyS0. This commit seems to be the culprit. It's as though the TX FIFO is being reset during that write. What should be displayed is: PSW 80000000 INST 00000000 HALT // What is displayed is some variation of: T 00000000 HAL// Reverting this commit via this patch fixes my problem. Signed-off-by: Mark Hounschell <dmarkh@cfl.rr.com> Fixes:ecb988a3b7("tty: serial: 8250: 8250_core: NXP SC16C2552 workaround") Cc: stable <stable@vger.kernel.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.
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.