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net/mlx5e: Skip PPHCR register query if not supported by the device

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Check the PCAM supported registers mask before querying the PPHCR
register, as it is not supported in older devices.

Fixes: 44907e7c8f ("net/mlx5e: Add logic to read RS-FEC histogram bin ranges from PPHCR")
Signed-off-by: Alexei Lazar <alazar@nvidia.com>
Reviewed-by: Yael Chemla <ychemla@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1761136182-918470-3-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alexei Lazar 2025-10-22 15:29:40 +03:00 committed by Jakub Kicinski
parent bb65e0c141
commit d58a9a917a
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
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@ -1614,7 +1614,9 @@ void mlx5e_stats_fec_get(struct mlx5e_priv *priv,
fec_set_corrected_bits_total(priv, fec_stats);
fec_set_block_stats(priv, mode, fec_stats);
fec_set_histograms_stats(priv, mode, hist);
if (MLX5_CAP_PCAM_REG(priv->mdev, pphcr))
fec_set_histograms_stats(priv, mode, hist);
}
#define PPORT_ETH_EXT_OFF(c) \