* [PATCH 2/3 v2] drivers/net/ethernet/ti: Move call to PTR_ERR after reassignment
[not found] <1328194382-32465-1-git-send-email-Julia.Lawall@lip6.fr>
@ 2012-02-02 14:53 ` Julia Lawall
2012-02-02 19:37 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Julia Lawall @ 2012-02-02 14:53 UTC (permalink / raw)
To: netdev; +Cc: kernel-janitors, linux-kernel
From: Julia Lawall <Julia.Lawall@lip6.fr>
PTR_ERR should be called before its argument is cleared.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e,e1;
constant c;
@@
*e = c
... when != e = e1
when != &e
when != true IS_ERR(e)
*PTR_ERR(e)
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reported-by: Josh Triplett <josh@joshtriplett.org>
---
v2: correct commit message.
drivers/net/ethernet/ti/davinci_emac.c | 3 ++-
drivers/net/ethernet/ti/davinci_mdio.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index efd4f3e..922a937 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1600,8 +1600,9 @@ static int emac_dev_open(struct net_device *ndev)
if (IS_ERR(priv->phydev)) {
dev_err(emac_dev, "could not connect to phy %s\n",
priv->phy_id);
+ ret = PTR_ERR(priv->phydev);
priv->phydev = NULL;
- return PTR_ERR(priv->phydev);
+ return ret;
}
priv->link = 0;
diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c
index ef7c9c1..af8b8fc 100644
--- a/drivers/net/ethernet/ti/davinci_mdio.c
+++ b/drivers/net/ethernet/ti/davinci_mdio.c
@@ -318,9 +318,9 @@ static int __devinit davinci_mdio_probe(struct platform_device *pdev)
data->clk = clk_get(dev, NULL);
if (IS_ERR(data->clk)) {
- data->clk = NULL;
dev_err(dev, "failed to get device clock\n");
ret = PTR_ERR(data->clk);
+ data->clk = NULL;
goto bail_out;
}
^ permalink raw reply related [flat|nested] 2+ messages in thread