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net/mlx5: Fix ptp max frequency adjustment range

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[ Upstream commit fe91d57277eef8bb4aca05acfa337b4a51d0bba4 ]

.max_adj of ptp_clock_info acts as an absolute value for the amount in ppb
that can be set for a single call of .adjfine. This means that a single
call to .getfine cannot be greater than .max_adj or less than -(.max_adj).
Provides correct value for max frequency adjustment value supported by
devices.

Fixes: 3d8c38af14 ("net/mlx5e: Add PTP Hardware Clock (PHC) support")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Rahul Rameshbabu 2022-12-05 14:26:09 -08:00 committed by Greg Kroah-Hartman
parent 62d707dabb
commit ec049ae2b4
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c
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@ -418,7 +418,7 @@ static int mlx5_ptp_verify(struct ptp_clock_info *ptp, unsigned int pin,
static const struct ptp_clock_info mlx5_ptp_clock_info = { static const struct ptp_clock_info mlx5_ptp_clock_info = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.name = "mlx5_ptp", .name = "mlx5_ptp",
.max_adj = 100000000, .max_adj = 50000000,
.n_alarm = 0, .n_alarm = 0,
.n_ext_ts = 0, .n_ext_ts = 0,
.n_per_out = 0, .n_per_out = 0,