netdev - [net-next 03/15] net/mlx5: fw reset: Skip device ID check if PCI link up failed

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Date:   Tue,  7 Feb 2023 16:37:00 -0800
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Moshe Shemesh <moshe@...dia.com>, Shay Drory <shayd@...dia.com>
Subject: [net-next 03/15] net/mlx5: fw reset: Skip device ID check if PCI link up failed

From: Moshe Shemesh <moshe@...dia.com>

In case where after reset the PCI link is not ready within timeout, skip
reading device ID as if there is no PCI link up we can't have FW
response to pci config cycles either.

This also fixes err value not used and overwritten in such flow.

Signed-off-by: Moshe Shemesh <moshe@...dia.com>
Reviewed-by: Shay Drory <shayd@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
index 1da4da564e6d..63290da84010 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
@@ -371,6 +371,7 @@ static int mlx5_pci_link_toggle(struct mlx5_core_dev *dev)
 		mlx5_core_err(dev, "PCI link not ready (0x%04x) after %llu ms\n",
 			      reg16, mlx5_tout_ms(dev, PCI_TOGGLE));
 		err = -ETIMEDOUT;
+		goto restore;
 	}
 
 	do {
-- 
2.39.1