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If a start bit is detected, then reset the receive buffer counter to 0. This ensures that no stale data is in the buffer if a message is broken off midstream due to e.g. a Low Drive condition and then retransmitted. The only Rx interrupts we need to listen to are RX_REGISTER_FULL (i.e. a valid byte was received) and RX_START_BIT_DETECTED (i.e. a new message starts and we need to reset the counter). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: <stable@vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.