From: Eran Ben Elisha Date: Tue, 16 Jun 2020 09:07:10 +0000 (+0300) Subject: net/mlx5: Don't call timecounter cyc2time directly from 1PPS flow X-Git-Tag: v4.19.153~51 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=85c4859b4f54d4469b1dcf411104cc40243c8c05;p=users%2Fdwmw2%2Flinux.git net/mlx5: Don't call timecounter cyc2time directly from 1PPS flow [ Upstream commit 0d2ffdc8d4002a62de31ff7aa3bef28c843c3cbe ] Before calling timecounter_cyc2time(), clock->lock must be taken. Use mlx5_timecounter_cyc2time instead which guarantees a safe access. Fixes: afc98a0b46d8 ("net/mlx5: Update ptp_clock_event foreach PPS event") Signed-off-by: Eran Ben Elisha Signed-off-by: Sasha Levin --- diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c index d359e850dbf07..0fd62510fb277 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c @@ -475,8 +475,9 @@ void mlx5_pps_event(struct mlx5_core_dev *mdev, switch (clock->ptp_info.pin_config[pin].func) { case PTP_PF_EXTTS: ptp_event.index = pin; - ptp_event.timestamp = timecounter_cyc2time(&clock->tc, - be64_to_cpu(eqe->data.pps.time_stamp)); + ptp_event.timestamp = + mlx5_timecounter_cyc2time(clock, + be64_to_cpu(eqe->data.pps.time_stamp)); if (clock->pps_info.enabled) { ptp_event.type = PTP_CLOCK_PPSUSR; ptp_event.pps_times.ts_real =