netdev - [net-next V2 14/15] net/mlx5: print change on SW reset semaphore returns busy

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Date: Fri, 20 Oct 2023 23:46:19 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>,
	netdev@...r.kernel.org,
	Tariq Toukan <tariqt@...dia.com>,
	Moshe Shemesh <moshe@...dia.com>,
	Shay Drory <shayd@...dia.com>
Subject: [net-next V2 14/15] net/mlx5: print change on SW reset semaphore returns busy

From: Moshe Shemesh <moshe@...dia.com>

While collecting crdump as part of fw_fatal health reporter dump the PF
may fail to lock the SW reset semaphore. Change the print to indicate if
it was due to another PF locked the semaphore already and so trying to
lock the semaphore returned -EBUSY.

Signed-off-by: Moshe Shemesh <moshe@...dia.com>
Reviewed-by: Shay Drory <shayd@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/diag/crdump.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/crdump.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/crdump.c
index 28d02749d3c4..7659ad21e6e5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/crdump.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/crdump.c
@@ -55,7 +55,10 @@ int mlx5_crdump_collect(struct mlx5_core_dev *dev, u32 *cr_data)
 	ret = mlx5_vsc_sem_set_space(dev, MLX5_SEMAPHORE_SW_RESET,
 				     MLX5_VSC_LOCK);
 	if (ret) {
-		mlx5_core_warn(dev, "Failed to lock SW reset semaphore\n");
+		if (ret == -EBUSY)
+			mlx5_core_info(dev, "SW reset semaphore is already in use\n");
+		else
+			mlx5_core_warn(dev, "Failed to lock SW reset semaphore\n");
 		goto unlock_gw;
 	}
 
-- 
2.41.0