On 11/27/20 10:59 AM, Jeroen Hofstee wrote:

Losing arbitration is normal in a CAN-bus network, it means that a
higher priority frame is being send and the pending message will be
retried later. Hence most driver only increment arbitration_lost, but
the sja1000 and sun4i driver also incremeant tx_error, causing errors
to be reported on a normal functioning CAN-bus. So stop counting them
as errors.

Sounds plausible.

For completeness, the Kvaser USB hybra also increments the tx_error
on arbitration lose, but it does so in single shot. Since in that
case the message is not retried, that behaviour is kept.

You mean only in one shot mode? What about one shot mode on the sja1000 cores?

Signed-off-by: Jeroen Hofstee <redacted>

I've split this into two patches, and added Fixes: lines, and pushed this for
now to linux-can/sja1000.

https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can.git/log/?h=sja1000

regards,
Marc

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