[PATCH 04/12] phy: tegra: add missing of_node_put after of_device_is_available

Julia Lawall
2019-02-23T13:59:39Z

Add an of_node_put when a tested device node is not available.

The semantic patch that fixes this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@@
identifier f;
local idexpression e;
expression x;
@@

e = f(...);
... when != of_node_put(e)
when != x = e
when != e = x
when any
if (<+...of_device_is_available(e)...+>) {
... when != of_node_put(e)
(
return e;
|
+ of_node_put(e);
return ...;
)
}
// </smpl>

Fixes: 53d2a715c2403 ("phy: Add Tegra XUSB pad controller support")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
drivers/phy/tegra/xusb.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff -u -p a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -260,8 +260,10 @@ tegra_xusb_pad_create(struct tegra_xusb_
int err;

np = tegra_xusb_find_pad_node(padctl, soc->name);
- if (!np || !of_device_is_available(np))
+ if (!np || !of_device_is_available(np)) {
+ of_node_put(np);
return NULL;
+ }

pad = soc->ops->probe(padctl, soc, np);
if (IS_ERR(pad)) {