Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1243882

[PATCH 2/5] power_supply: charger-manager: add missing of_node_put

From Julia Lawall <Julia.Lawall@lip6.fr>
Newsgroups linux.kernel
Subject [PATCH 2/5] power_supply: charger-manager: add missing of_node_put
Date 2015-10-10 14:50 +0200
Message-ID <qi1L3-18e-7@gated-at.bofh.it> (permalink)
References <qi1L3-18e-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

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

// <smpl>
@@
expression root,e;
local idexpression child;
@@

 for_each_child_of_node(root, child) {
   ... when != of_node_put(child)
       when != e = child
(
   return child;
|
+  of_node_put(child);
?  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
 drivers/power/charger-manager.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c
index 907293e..1ea5d1a 100644
--- a/drivers/power/charger-manager.c
+++ b/drivers/power/charger-manager.c
@@ -1581,8 +1581,10 @@ static struct charger_desc *of_cm_parse_desc(struct device *dev)
 				cables = devm_kzalloc(dev, sizeof(*cables)
 						* chg_regs->num_cables,
 						GFP_KERNEL);
-				if (!cables)
+				if (!cables) {
+					of_node_put(child);
 					return ERR_PTR(-ENOMEM);
+				}
 
 				chg_regs->cables = cables;
 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | NextNext in thread | Find similar | Unroll thread


Thread

[PATCH 2/5] power_supply: charger-manager: add missing of_node_put Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-10 14:50 +0200
  Re: [PATCH 2/5] power_supply: charger-manager: add missing of_node_put Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-10-12 04:30 +0200
  Re: [PATCH 2/5] power_supply: charger-manager: add missing  of_node_put Sebastian Reichel <sre@kernel.org> - 2015-10-15 11:00 +0200

csiph-web