can: pcan_usb: add support of rxerr/txerr counters
This patch adds the support of the rx/tx errors CAN counters to the driver of the PCAN-USB PC-CAN interface from PEAK-System GmbH. The PCAN-USB is capable of giving back the values of the rx/tx errors counters, to provide more details and statistics to the linux-can layer. Getting these values allows the driver to better tune CAN_ERR_CRTL_TX_xxx and CAN_ERR_CRTL_RX_xxx bits in case of the interface enters any CAN_STATE_ERROR_xxx state. Signed-off-by:Stephane Grosjean <s.grosjean@peak-system.com> Link: https://lore.kernel.org/r/20191206153803.17725-3-s.grosjean@peak-system.com Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
parent
a8bb19df