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The actual payload length of the CAN Remote Transmission Request (RTR) frames is always 0, i.e. no payload is transmitted on the wire. However, those RTR frames still use the DLC to indicate the length of the requested frame. For this reason, it is incorrect to copy the payload of RTR frames (the payload buffer would only contain garbage data). This patch encapsulates the payload copy in a check toward the RTR flag. Link: https://lore.kernel.org/all/20211207121531.42941-4-mailhol.vincent@wanadoo.fr Cc: Yasushi SHOJI <yashi@spacecubics.com> Tested-by: Yasushi SHOJI <yashi@spacecubics.com> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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.