diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c index 7b01b9c20722..cbb6c75a6620 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c @@ -189,29 +189,17 @@ mlxsw_sp1_ptp_phc_settime(struct mlxsw_sp1_ptp_clock *clock, u64 nsec) static int mlxsw_sp1_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm) { struct mlxsw_sp1_ptp_clock *clock = mlxsw_sp1_ptp_clock(ptp); - int neg_adj = 0; - u32 diff; - u64 adj; s32 ppb; ppb = scaled_ppm_to_ppb(scaled_ppm); - if (ppb < 0) { - neg_adj = 1; - ppb = -ppb; - } - - adj = clock->nominal_c_mult; - adj *= ppb; - diff = div_u64(adj, NSEC_PER_SEC); - spin_lock_bh(&clock->lock); timecounter_read(&clock->tc); - clock->cycles.mult = neg_adj ? clock->nominal_c_mult - diff : - clock->nominal_c_mult + diff; + clock->cycles.mult = adjust_by_scaled_ppm(clock->nominal_c_mult, + scaled_ppm); spin_unlock_bh(&clock->lock); - return mlxsw_sp_ptp_phc_adjfreq(&clock->common, neg_adj ? -ppb : ppb); + return mlxsw_sp_ptp_phc_adjfreq(&clock->common, ppb); } static int mlxsw_sp1_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) |