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8d3a7b2064
commit60de2d2dc2upstream. The txdone can re-fill the mailbox. Keep polling the mailbox during the flush until all the messages have been delivered. This fixes an issue with the Tegra Combined UART (TCU) where output can get truncated under high traffic load. Signed-off-by: Pekka Pessi <ppessi@nvidia.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Fixes:91b1b1c3da("mailbox: tegra-hsp: Add support for shared mailboxes") Cc: stable@vger.kernel.org Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.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.
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.