[PATCH] net/mlx5: support no host PF configuration

[Jiawei Wang <jiaweiw@nvidia.com>]

From: Xueming Li <xuemingl@nvidia.com>

In BlueField, a new firmware configuration option NUM_OF_PF=0 disables
PF on the x86 host side, no HPF on the ARM side, and the only RDMA port
on the ARM side is the bonding device(PF0). A device probe with devargs
of representor=pf[0-1]vf[...] will probe PF0 and PF1 one by one, and
it's possible that PF1 device scan results in no switch ports.

This patch supports the new configuration by allowing a PF scan with
empty switch ports.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_os.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index d5ef695e6d..75f53ade8e 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -2195,13 +2195,6 @@ mlx5_os_pci_probe_pf(struct mlx5_common_device *cdev,
 				     list[ns].info.master))
 				ns++;
 		}
-		if (!ns) {
-			DRV_LOG(ERR,
-				"Unable to recognize master/representors on the IB device with multiple ports.");
-			rte_errno = ENOENT;
-			ret = -rte_errno;
-			goto exit;
-		}
 	} else {
 		/*
 		 * The existence of several matching entries (nd > 1) means
-- 
2.18.1