diff options
| -rw-r--r-- | drivers/net/mlx4/cmd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/mlx4/cmd.c b/drivers/net/mlx4/cmd.c index b540820e9c2..db49051b97b 100644 --- a/drivers/net/mlx4/cmd.c +++ b/drivers/net/mlx4/cmd.c @@ -184,6 +184,13 @@ static int mlx4_cmd_post(struct mlx4_dev *dev, u64 in_param, u64 out_param, (event ? (1 << HCR_E_BIT) : 0) | (op_modifier << HCR_OPMOD_SHIFT) | op), hcr + 6); + + /* + * Make sure that our HCR writes don't get mixed in with + * writes from another CPU starting a FW command. + */ + mmiowb(); + cmd->toggle = cmd->toggle ^ 1; ret = 0; |