can: m_can: add support for handling arbitration error

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The Bosch MCAN hardware (3.1.0 and above) supports interrupt flag to
detect Protocol error in arbitration phase.

Transmit error statistics is currently not updated from the MCAN driver.
Protocol error in arbitration phase is a TX error and the network
statistics should be updated accordingly.

The member "tx_error" of "struct net_device_stats" should be incremented
as arbitration is a transmit protocol error. Also "arbitration_lost" of
"struct can_device_stats" should be incremented to report arbitration
lost.

Signed-off-by: Pankaj Sharma <pankj.sharma@samsung.com>
Signed-off-by: Sriram Dash <sriram.dash@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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Pankaj Sharma 2019-10-30 17:08:59 +05:30 • committed by Marc Kleine-Budde

parent fb7d6a81c2

commit 6b43a26508

1 changed files with 42 additions and 0 deletions

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drivers/net/can/m_can/m_can.c

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