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6181dbc02b
Replace some custom code with a call to can_change_state(). This subtly changes the error reporting behavior when both RX and TX error counters indicate the same state. Previously, if both RX and TX counters indicated the same state: - if overall state is PASSIVE, report CAN_ERR_CRTL_RX_PASSIVE - if overall state is WARNING, report CAN_ERR_CRTL_TX_WARNING or CAN_ERR_CRTL_RX_WARNING depending on which counter is higher, or CAN_ERR_CRTL_RX_WARNING if the counters have the same value. After this commit: - report RX_* or TX_* depending on which counter is higher, or both if the counters have exactly the same value. This behavior is consistent with many other CAN drivers that use this same code pattern. Tested with the integrated CAN on Zynq-7000 SoC. v2: Simplify resolving states as suggested by Andri Yngvason. Signed-off-by: Anssi Hannula <anssi.hannula@bitwise.fi> 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.
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.