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can: dev: keep the max bitrate error at 5%

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Commit b360a13d44 ("can: dev: print bitrate error with two decimal
digits") changed calculation of the bit rate error from on-tenth of a
percent to on-hundredth of a percent, but forgot to adjust the scale of the
CAN_CALC_MAX_ERROR constant.

Keeping the existing logic unchanged: Only when the bitrate error exceeds
5% should an error be returned. Otherwise, simply output a warning log.

Fixes: b360a13d44 ("can: dev: print bitrate error with two decimal digits")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20260306-can-fix-v1-1-ac526cec6777@nxp.com
Cc: stable@kernel.org
[mkl: improve commit message]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Haibo Chen 2026-03-06 17:04:48 +08:00 committed by Marc Kleine-Budde
parent e3f5e0f22c
commit 1eea46908c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/can/dev/calc_bittiming.c
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@ -8,7 +8,7 @@
#include <linux/units.h>
#include <linux/can/dev.h>
#define CAN_CALC_MAX_ERROR 50 /* in one-tenth of a percent */
#define CAN_CALC_MAX_ERROR 500 /* max error 5% */
/* CiA recommended sample points for Non Return to Zero encoding. */
static int can_calc_sample_point_nrz(const struct can_bittiming *bt)