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can: bittiming: apply NL_SET_ERR_MSG() to can_calc_bittiming()

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When CONFIG_CAN_CALC_BITTIMING is disabled, the can_calc_bittiming()
functions can not be used and the user needs to provide all the
bittiming parameters.

Currently, can_calc_bittiming() prints an error message to the kernel
log. Instead use NL_SET_ERR_MSG() to make it return the error message
through the netlink interface so that the user can directly see it.

Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20251126-canxl-v8-2-e7e3eb74f889@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Vincent Mailhol
2025-11-26 11:16:03 +01:00
committed by Marc Kleine-Budde
parent 66e75b2758
commit 585a4f22c4
1 changed files with 1 additions and 1 deletions
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2
include/linux/can/bittiming.h
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@@ -141,7 +141,7 @@ static inline int
can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,
const struct can_bittiming_const *btc, struct netlink_ext_ack *extack)
{
netdev_err(dev, "bit-timing calculation not available\n");
NL_SET_ERR_MSG(extack, "bit-timing calculation not available\n");
return -EINVAL;
}