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b7639b0b15
The previous implementation has had a detrimental effect on devices using high bitrates (bluetooth), as the fifo being non-empty for a single check would result in a 10 µs delay. Limit the change to devices with the new "marvell,armada-38x-uart" compatible string. Also update the code to allow the first 1000 retries to not perform a delay. The maximum duration of retries has been increased to cover a worst-case seen on the Armada 385 SoC. "dmesg ; resize", will fill the buffer with text to output before doing a resize. At 9600 baud this took up to 13 ms to flush all characters and avoid some getting lost. Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.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.