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[PATCH 1/1] MIPS: pci-rt3883: drop unneeded of_node_get

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for_each_child_of_node performs an of_node_get on each iteration, so no
of_node_get is needed on breaking out of the loop when the device_node
structure is saved in another variable.

A simplified semantic match that finds this problem is as follows
(http://coccinelle.lip6.fr):

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

 for_each_child_of_node(root, child) {
   ...
*  of_node_get(child)
   ...
   break;
 }
// </smpl>

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

---
 arch/mips/pci/pci-rt3883.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c
index ed6732f..53a42b0 100644
--- a/arch/mips/pci/pci-rt3883.c
+++ b/arch/mips/pci/pci-rt3883.c
@@ -432,8 +432,7 @@ static int rt3883_pci_probe(struct platform_device *pdev)
 
 	/* find the interrupt controller child node */
 	for_each_child_of_node(np, child) {
-		if (of_get_property(child, "interrupt-controller", NULL) &&
-		    of_node_get(child)) {
+		if (of_get_property(child, "interrupt-controller", NULL)) {
 			rpc->intc_of_node = child;
 			break;
 		}
@@ -449,8 +448,7 @@ static int rt3883_pci_probe(struct platform_device *pdev)
 	/* find the PCI host bridge child node */
 	for_each_child_of_node(np, child) {
 		if (child->type &&
-		    of_node_cmp(child->type, "pci") == 0 &&
-		    of_node_get(child)) {
+		    of_node_cmp(child->type, "pci") == 0) {
 			rpc->pci_controller.of_node = child;
 			break;
 		}

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[PATCH 0/1] drop unneeded of_node_get Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-25 22:40 +0100
  [PATCH 1/1] MIPS: pci-rt3883: drop unneeded of_node_get Julia Lawall <Julia.Lawall@lip6.fr> - 2015-10-25 22:40 +0100

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