[PATCH v2] net: cxgb3: Fix an error code when probing the driver

From: Zheyu Ma
Date: Sun Mar 06 2022 - 00:57:01 EST


During the process of driver probing, probe function should return < 0
for failure, otherwise kernel will treat value >= 0 as success.

Therefore, the driver should set 'err' to -ENODEV when
'adapter->registered_device_map' is NULL. Otherwise kernel will assume
that the driver has been successfully probed and will cause unexpected
errors.

Signed-off-by: Zheyu Ma <zheyuma97@xxxxxxxxx>
---
Changes in v2:
- Change the error code
---
drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
index bfffcaeee624..0d3325cf2107 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
@@ -3346,6 +3346,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
}
if (!adapter->registered_device_map) {
dev_err(&pdev->dev, "could not register any net devices\n");
+ err = -ENODEV;
goto out_free_dev;
}

--
2.25.1