From: Achiad Shochat <achiad@mellanox.com>
Date: Thu, 2 Apr 2015 14:07:28 +0000 (+0300)
Subject: net/mlx5_core: Fix a bug in alloc_token
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4cbdd27c9c3abf87d6fe88cdd749218193ed3e12;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

net/mlx5_core: Fix a bug in alloc_token

In alloc_token(), the token '1' would be allocated twice consecutively.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
index 0d862696b876..697d538163f2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -125,7 +125,10 @@ static u8 alloc_token(struct mlx5_cmd *cmd)
 	u8 token;
 
 	spin_lock(&cmd->token_lock);
-	token = cmd->token++ % 255 + 1;
+	cmd->token++;
+	if (cmd->token == 0)
+		cmd->token++;
+	token = cmd->token;
 	spin_unlock(&cmd->token_lock);
 
 	return token;