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net/mlx5: Fix FW tracer timestamp calculation

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[ Upstream commit 61db3d7b99a367416e489ccf764cc5f9b00d62a1 ]

Fix a bug in calculation of FW tracer timestamp. Decreasing one in the
calculation should effect only bits 52_7 and not effect bits 6_0 of the
timestamp, otherwise bits 6_0 are always set in this calculation.

Fixes: 70dd6fdb89 ("net/mlx5: FW tracer, parse traces and kernel tracing support")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Feras Daoud <ferasda@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Moshe Shemesh 2022-10-20 12:25:59 +03:00 committed by Greg Kroah-Hartman
parent 195fb76dc4
commit d7d8f1d965
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c
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@ -600,7 +600,7 @@ static void mlx5_tracer_handle_timestamp_trace(struct mlx5_fw_tracer *tracer,
trace_timestamp = (timestamp_event.timestamp & MASK_52_7) |
(str_frmt->timestamp & MASK_6_0);
else
trace_timestamp = ((timestamp_event.timestamp & MASK_52_7) - 1) |
trace_timestamp = ((timestamp_event.timestamp - 1) & MASK_52_7) |
(str_frmt->timestamp & MASK_6_0);
mlx5_tracer_print_trace(str_frmt, dev, trace_timestamp);