net/mlx5e: Set PTP channel pointer explicitly to NULL

When closing the PTP channel, set its pointer explicitly to NULL. PTP
channel is opened on demand, the code verify the pointer validity before
access. Nullify it when closing the PTP channel to avoid unexpected
behavior.

Fixes: 145e5637d941 ("net/mlx5e: Add TX PTP port object support")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 9e2a30dc5e4f1207bd504048e3983ff72bd05cb0..66d23cd275c1fea73c210df4eeac81cca7a341ce 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2503,8 +2503,10 @@ void mlx5e_close_channels(struct mlx5e_channels *chs)
 {
        int i;
 
-       if (chs->port_ptp)
+       if (chs->port_ptp) {
                mlx5e_port_ptp_close(chs->port_ptp);
+               chs->port_ptp = NULL;
+       }
 
        for (i = 0; i < chs->num; i++)
                mlx5e_close_channel(chs->c[i]);