[PATCH net 2/5] net/mlx5e: Don't gate FEC histograms on ppcnt_statistical_group

[Mark Bloch <mbloch@nvidia.com>]

From: Alexei Lazar <alazar@nvidia.com>

Currently, the ppcnt_statistical_group capability check
incorrectly gates access to FEC histogram statistics.
This capability applies only to statistical and physical
counter groups, not for histogram data.

Restrict the ppcnt_statistical_group check to the
Physical_Layer_Counters and Physical_Layer_Statistical_Counters
groups.
Histogram statistics access remains gated by the pphcr
capability.

The issue is harmless as of today, as it happens that
ppcnt_statistical_group is set on all existing devices that
have pphcr set.

Fixes: 6b81b8a0b197 ("net/mlx5e: Don't query FEC statistics when FEC is disabled")
Signed-off-by: Alexei Lazar <alazar@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
index a2802cfc9b98..a8af84fc9763 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -1608,12 +1608,13 @@ void mlx5e_stats_fec_get(struct mlx5e_priv *priv,
 {
 	int mode = fec_active_mode(priv->mdev);
 
-	if (mode == MLX5E_FEC_NOFEC ||
-	    !MLX5_CAP_PCAM_FEATURE(priv->mdev, ppcnt_statistical_group))
+	if (mode == MLX5E_FEC_NOFEC)
 		return;
 
-	fec_set_corrected_bits_total(priv, fec_stats);
-	fec_set_block_stats(priv, mode, fec_stats);
+	if (MLX5_CAP_PCAM_FEATURE(priv->mdev, ppcnt_statistical_group)) {
+		fec_set_corrected_bits_total(priv, fec_stats);
+		fec_set_block_stats(priv, mode, fec_stats);
+	}
 
 	if (MLX5_CAP_PCAM_REG(priv->mdev, pphcr))
 		fec_set_histograms_stats(priv, mode, hist);
-- 
2.34.1