dcb26ea75d
[ Upstream commit d5e3fadb70125c6c41f692cf1c0e626c12e11de1 ] This allows DMA engine to go into runtime-suspended mode whenever there is no data to receive, instead of keeping DMA active all the time while TTY is opened (i.e. permanently active in practice, like in the case of UART Bluetooth). Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20200112180919.5194-2-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Stable-dep-of: 109a951a9f1f ("serial: tegra: Read DMA status before terminating") Signed-off-by: Sasha Levin <sashal@kernel.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.