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From: Julia Lawall <Julia.Lawall@lip6.fr>
To: linux-wireless@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, netdev@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	"Sören Brinkmann" <soren.brinkmann@xilinx.com>,
	linux-media@vger.kernel.org,
	"Russell King - ARM Linux" <linux@arm.linux.org.uk>,
	"Thomas Petazzoni" <thomas.petazzoni@free-electrons.com>,
	"Andrew Lunn" <andrew@lunn.ch>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Jason Cooper" <jason@lakedaemon.net>
Subject: [PATCH 0/8] add missing of_node_put
Date: Sun, 25 Oct 2015 14:56:59 +0100	[thread overview]
Message-ID: <1445781427-7110-1-git-send-email-Julia.Lawall@lip6.fr> (raw)

The various for_each device_node iterators performs an of_node_get on each
iteration, so a break out of the loop requires an of_node_put.

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

// <smpl>
@r@
local idexpression n;
expression e1,e2;
iterator name for_each_node_by_name, for_each_node_by_type,
for_each_compatible_node, for_each_matching_node,
for_each_matching_node_and_match, for_each_child_of_node,
for_each_available_child_of_node, for_each_node_with_property;
iterator i;
statement S;
expression list [n1] es;
@@

(
(
for_each_node_by_name(n,e1) S
|
for_each_node_by_type(n,e1) S
|
for_each_compatible_node(n,e1,e2) S
|
for_each_matching_node(n,e1) S
|
for_each_matching_node_and_match(n,e1,e2) S
|
for_each_child_of_node(e1,n) S
|
for_each_available_child_of_node(e1,n) S
|
for_each_node_with_property(n,e1) S
)
&
i(es,n,...) S
)

@@
local idexpression r.n;
iterator r.i;
expression e;
expression list [r.n1] es;
@@

 i(es,n,...) {
   ...
(
   of_node_put(n);
|
   e = n
|
   return n;
|
+  of_node_put(n);
?  return ...;
)
   ...
 }

@@
local idexpression r.n;
iterator r.i;
expression e;
expression list [r.n1] es;
@@

 i(es,n,...) {
   ...
(
   of_node_put(n);
|
   e = n
|
+  of_node_put(n);
?  break;
)
   ...
 }
... when != n

@@
local idexpression r.n;
iterator r.i;
expression e;
identifier l;
expression list [r.n1] es;
@@

 i(es,n,...) {
   ...
(
   of_node_put(n);
|
   e = n
|
+  of_node_put(n);
?  goto l;
)
   ...
 }
...
l: ... when != n// </smpl>

---

 drivers/media/platform/xilinx/xilinx-tpg.c        |    2 ++
 drivers/media/platform/xilinx/xilinx-vipp.c       |    4 +++-
 drivers/net/ethernet/cavium/thunder/thunder_bgx.c |    4 +++-
 drivers/net/ethernet/marvell/mv643xx_eth.c        |    4 +++-
 drivers/net/ethernet/ti/netcp_ethss.c             |    8 ++++++--
 drivers/net/phy/mdio-mux-mmioreg.c                |    2 ++
 drivers/net/phy/mdio-mux.c                        |    1 +
 drivers/net/wireless/ath/ath6kl/init.c            |    1 +
 8 files changed, 21 insertions(+), 5 deletions(-)

             reply	other threads:[~2015-10-25 14:09 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-25 13:56 Julia Lawall [this message]
2015-10-25 13:57 ` [PATCH 1/8] net: thunderx: add missing of_node_put Julia Lawall
2015-10-25 13:57 ` [PATCH 2/8] net: netcp: " Julia Lawall
2015-10-25 13:57 ` [PATCH 3/8] netdev/phy: " Julia Lawall
2015-10-25 13:57 ` [PATCH 4/8] net: phy: mdio: " Julia Lawall
2015-10-25 13:57 ` [PATCH 5/8] [media] v4l: xilinx-vipp: " Julia Lawall
2015-10-26  1:20   ` Laurent Pinchart
2015-10-25 13:57 ` [PATCH 6/8] [media] v4l: xilinx-tpg: " Julia Lawall
2015-10-26  1:19   ` Laurent Pinchart
2015-10-25 13:57 ` [PATCH 7/8] ath6kl: " Julia Lawall
2015-10-25 13:57 ` [PATCH 8/8] net: mv643xx_eth: " Julia Lawall
2015-10-27  5:08 ` [PATCH 0/8] " David Miller

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