RDMA/mlx5: Fix NULL string error

commit dab994bcc609a172bfdab15a0d4cb7e50e8b5458 upstream.

checkpath is complaining about NULL string, change it to 'Unknown'.

Fixes: 37aa5c36aa70 ("IB/mlx5: Add UARs write-combining and non-cached mapping")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Link: https://lore.kernel.org/r/8638e5c14fadbde5fa9961874feae917073af920.1695203958.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 3fbe3962d53b5e3f24aeaf270106f4fae094b4e1..7d8bd97274f336e31831b8161737bb23ddef379b 100644 (file)
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1680,7 +1680,7 @@ static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
        case MLX5_IB_MMAP_NC_PAGE:
                return "NC";
        default:
-               return NULL;
+               return "Unknown";
        }
 }