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Commit ec049ae2 authored by Rahul Rameshbabu's avatar Rahul Rameshbabu Committed by Greg Kroah-Hartman
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net/mlx5: Fix ptp max frequency adjustment range 



[ 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: 3d8c38af ("net/mlx5e: Add PTP Hardware Clock (PHC) support")
Signed-off-by: default avatarRahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: default avatarGal Pressman <gal@nvidia.com>
Reviewed-by: default avatarTariq Toukan <tariqt@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 62d707da

drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c

+1 −1
Original line number Diff line number Diff line
@@ -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 = {

	.owner		= THIS_MODULE,

	.name		= "mlx5_ptp",

	.max_adj	= 100000000,

	.max_adj	= 50000000,

	.n_alarm	= 0,

	.n_ext_ts	= 0,

	.n_per_out	= 0,