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| author | Marc Kleine-Budde <[email protected]> | 2023-12-10 14:43:14 +0100 |
|---|---|---|
| committer | Marc Kleine-Budde <[email protected]> | 2024-09-04 14:41:53 +0200 |
| commit | 7ba7111b5f9e754e21ea508754c43238c5528c3d (patch) | |
| tree | cce1d3cf3b8181373f8276249b8a316597b1d53f /tools/testing/selftests/bpf/progs/test_prog_array_init.c | |
| parent | 83f9bd6bf39de5865372d45edbe0cf7b19c285c5 (diff) | |
can: rockchip_canfd: rkcanfd_get_berr_counter_corrected(): work around broken {RX,TX}ERRORCNT register
Tests show that sometimes both CAN bus error counters read 0x0, even
if the controller is in warning mode
(RKCANFD_REG_STATE_ERROR_WARNING_STATE in RKCANFD_REG_STATE
set).
To work around this issue, if both error counters read from hardware
are 0x0, use the structure priv->bec, otherwise save the read value in
priv->bec.
In rkcanfd_handle_rx_int_one() decrement the priv->bec.rxerr for
successfully RX'ed CAN frames.
In rkcanfd_handle_tx_done_one() decrement the priv->bec.txerr for
successfully TX'ed CAN frames.
Tested-by: Alibek Omarov <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Marc Kleine-Budde <[email protected]>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_prog_array_init.c')
0 files changed, 0 insertions, 0 deletions