mips/pic32/pic32mzda: Fix refcount leak bugs

of_find_matching_node(), of_find_compatible_node() and
of_find_node_by_path() will return node pointers with refcout
incremented. We should call of_node_put() when they are not
used anymore.

Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/pic32/pic32mzda/init.c b/arch/mips/pic32/pic32mzda/init.c
index 1299156..d9c8c4e 100644 (file)
--- a/arch/mips/pic32/pic32mzda/init.c
+++ b/arch/mips/pic32/pic32mzda/init.c
@@ -98,13 +98,18 @@ static int __init pic32_of_prepare_platform_data(struct of_dev_auxdata *lookup)
                np = of_find_compatible_node(NULL, NULL, lookup->compatible);
                if (np) {
                        lookup->name = (char *)np->name;
-                       if (lookup->phys_addr)
+                       if (lookup->phys_addr) {
+                               of_node_put(np);
                                continue;
+                       }
                        if (!of_address_to_resource(np, 0, &res))
                                lookup->phys_addr = res.start;
+                       of_node_put(np);
                }
        }
 
+       of_node_put(root);
+
        return 0;
 }
 

diff --git a/arch/mips/pic32/pic32mzda/time.c b/arch/mips/pic32/pic32mzda/time.c
index 7174e9a..777b515 100644 (file)
--- a/arch/mips/pic32/pic32mzda/time.c
+++ b/arch/mips/pic32/pic32mzda/time.c
@@ -32,6 +32,9 @@ static unsigned int pic32_xlate_core_timer_irq(void)
                goto default_map;
 
        irq = irq_of_parse_and_map(node, 0);
+
+       of_node_put(node);
+
        if (!irq)
                goto default_map;