net/mlx4_core: Add warning in case of command timeouts

Warning prints when there are command timeout to help debugging future
failures.

Signed-off-by: Dotan Barak <dotanb@dev.mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
index ea1e03896353..df04c8206ebe 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -257,6 +257,8 @@ static int mlx4_comm_cmd_wait(struct mlx4_dev *dev, u8 op,
 
         if (!wait_for_completion_timeout(&context->done,
                                          msecs_to_jiffies(timeout))) {
+                mlx4_warn(dev, "communication channel command 0x%x timed out\n",
+                          op);
                 err = -EBUSY;
                 goto out;
         }
@@ -486,6 +488,8 @@ static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
         }
 
         if (cmd_pending(dev)) {
+                mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
+                          op);
                 err = -ETIMEDOUT;
                 goto out;
         }
@@ -549,6 +553,8 @@ static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 
         if (!wait_for_completion_timeout(&context->done,
                                          msecs_to_jiffies(timeout))) {
+                mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
+                          op);
                 err = -EBUSY;
                 goto out;
         }