In tc2_pm_init(), of_find_compatible_node() will return a node pointer
with refcount incremented. We should use of_node_put() in fail path or
when it is not used anymore.
Signed-off-by: Liang He <windhl@126.com>
---
arch/arm/mach-versatile/tc2_pm.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-versatile/tc2_pm.c b/arch/arm/mach-versatile/tc2_pm.c
index 0fe78da0c109..2a7aeab7b3da 100644
--- a/arch/arm/mach-versatile/tc2_pm.c
+++ b/arch/arm/mach-versatile/tc2_pm.c
@@ -212,19 +212,24 @@ static int __init tc2_pm_init(void)
np = of_find_compatible_node(NULL, NULL,
"arm,vexpress-scc,v2p-ca15_a7");
scc = of_iomap(np, 0);
- if (!scc)
+ if (!scc) {
+ of_node_put(np);
return -ENODEV;
+ }
a15_cluster_id = readl_relaxed(scc + A15_CONF) & 0xf;
a7_cluster_id = readl_relaxed(scc + A7_CONF) & 0xf;
- if (a15_cluster_id >= TC2_CLUSTERS || a7_cluster_id >= TC2_CLUSTERS)
+ if (a15_cluster_id >= TC2_CLUSTERS || a7_cluster_id >= TC2_CLUSTERS) {
+ of_node_put(np);
return -EINVAL;
+ }
sys_info = readl_relaxed(scc + SYS_INFO);
tc2_nr_cpus[a15_cluster_id] = (sys_info >> 16) & 0xf;
tc2_nr_cpus[a7_cluster_id] = (sys_info >> 20) & 0xf;
irq = irq_of_parse_and_map(np, 0);
+ of_node_put(np);
/*
* A subset of the SCC registers is also used to communicate
--
2.25.1