openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

leds: tlc591xx: add missing of_node_put 

for_each_child_of_node performs an of_node_get on each iteration, so a
return from the loop requires an of_node_put.

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

// <smpl>
@@
local idexpression n;
expression e,e1;
iterator name for_each_child_of_node;
@@

 for_each_child_of_node(e1,n) {
   ...
(
   of_node_put(n);
|
   e = n
|
   return n;
|
+  of_node_put(n);
?  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
This commit is contained in:
Julia Lawall 2017-07-15 11:58:19 +02:00 committed by Jacek Anaszewski
parent 1055790b0d
commit c68729119f
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/leds/leds-tlc591xx.c
View File

@ -230,11 +230,15 @@ tlc591xx_probe(struct i2c_client *client,
for_each_child_of_node(np, child) {
err = of_property_read_u32(child, "reg", &reg);
if (err)
if (err) {
of_node_put(child);
return err;
}
if (reg < 0 || reg >= tlc591xx->max_leds ||
priv->leds[reg].active)
priv->leds[reg].active) {
of_node_put(child);
return -EINVAL;
}
priv->leds[reg].active = true;
priv->leds[reg].ldev.name =
of_get_property(child, "label", NULL) ? : child->name;