From dbfc189cc59adb2150e7e7b461d73e5a40e1158c Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 21 Aug 2011 06:10:00 +0000 Subject: [PATCH] powerpc/cell/iommu: Add missing of_node_put 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 592c3d51b817..ae9fc7bc17d6 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; -- 2.34.1