powerpc/cell/iommu: Add missing of_node_put
Author: Julia Lawall <julia@diku.dk>
np is initialized to the result of calling a function that calls
of_node_get, so of_node_put should be called before the pointer is dropped.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
//
@@
expression e,e1,e2;
@@
* e = \(of_find_node_by_type\|of_find_node_by_name\)(...)
... when != of_node_put(e)
when != true e == NULL
when != e2 = e
e = e1
//
Signed-off-by: Julia Lawall
Acked-by: Arnd Bergmann
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/platforms/cell/iommu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 592c3d5..ae9fc7b 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -1037,6 +1037,8 @@ static int __init cell_iommu_fixed_mapping_init(void)
/* The fixed mapping is only supported on axon machines */
np = of_find_node_by_name(NULL, "axon");
+ of_node_put(np);
+
if (!np) {
pr_debug("iommu: fixed mapping disabled, no axons found\n");
return -1; |
---
arch/powerpc/platforms/cell/iommu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 592c3d5..ae9fc7b 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -1037,6 +1037,8 @@ static int __init cell_iommu_fixed_mapping_init(void)
/* The fixed mapping is only supported on axon machines */
np = of_find_node_by_name(NULL, "axon");
+ of_node_put(np);
+
if (!np) {
pr_debug("iommu: fixed mapping disabled, no axons found\n");
return -1;