kybaaz/linux-xiaomi-chiron
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

can: add CAN_ERR_CNT flag to notify availability of error counter

Browse source 
Add a dedicated flag in uapi/linux/can/error.h to notify the userland
that fields data[6] and data[7] of the CAN error frame were
respectively populated with the tx and rx error counters.

For all driver tree-wide, set up this flags whenever needed.

Link: https://lore.kernel.org/all/20220719143550.3681-12-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Vincent Mailhol 2022-07-19 23:35:49 +09:00 • committed by Marc Kleine-Budde
parent e70a3263a7
commit 3e5c291c79
25 changed files with 38 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/uapi/linux/can/error.h
View file

@ -57,6 +57,8 @@
#define CAN_ERR_BUSOFF 0x00000040U /* bus off */
#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */
#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */
#define CAN_ERR_CNT 0x00000200U /* TX error counter / data[6] */
/* RX error counter / data[7] */
/* arbitration lost in bit ... / data[0] */
#define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */