netdev - [PATCH 05/11] mlxsw: fix error return code

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Message-Id: <1440288682-12732-6-git-send-email-Julia.Lawall@lip6.fr>
Date:	Sun, 23 Aug 2015 02:11:16 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Jiri Pirko <jiri@...lanox.com>
Cc:	kernel-janitors@...r.kernel.org,
	Ido Schimmel <idosch@...lanox.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 05/11] mlxsw: fix error return code

Return a negative error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/net/ethernet/mellanox/mlxsw/pci.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index a34f474..045f98f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -1726,6 +1726,7 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 						mlxsw_pci_dbg_root);
 	if (!mlxsw_pci->dbg_dir) {
 		dev_err(&pdev->dev, "Failed to create debugfs dir\n");
+		err = -ENOMEM;
 		goto err_dbg_create_dir;
 	}
 

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