michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: CAN: Limit the DLC to 8

Browse source 
This commit limits the data length code to eight.
DLC > 8 returns a newly introduced CAN_TX_EINVAL error code.

Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
This commit is contained in:
Alexander Wachter 2019-11-06 10:03:20 +01:00 • committed by Kumar Gala
commit d558fd055a
6 changed files with 40 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/can/can_stm32.c
View file

@ -548,7 +548,11 @@ int can_stm32_send(struct device *dev, const struct zcan_frame *msg,
, msg->rtr == CAN_DATAFRAME ? "no" : "yes");
__ASSERT(msg->dlc == 0U || msg->data != NULL, "Dataptr is null");
__ASSERT(msg->dlc <= CAN_MAX_DLC, "DLC > 8");
if (msg->dlc > CAN_MAX_DLC) {
LOG_ERR("DLC of %d exceeds maximum (%d)", msg->dlc, CAN_MAX_DLC);
return CAN_TX_EINVAL;
}
if (can->ESR & CAN_ESR_BOFF) {
return CAN_TX_BUS_OFF;