In of_register_trusted_foundations(), we need to hold the reference
returned by of_find_compatible_node() and then use it to call
of_node_put() for refcount balance.
Signed-off-by: Liang He <windhl@126.com>
---
v2: use 'check-and-put' coding style
v1: hold ref returned by of_find_xxx
v1 link: https://lore.kernel.org/all/20220621032625.4078445-1-windhl@126.com/
include/linux/firmware/trusted_foundations.h | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/include/linux/firmware/trusted_foundations.h b/include/linux/firmware/trusted_foundations.h
index be5984bda592..931b6c5c72df 100644
--- a/include/linux/firmware/trusted_foundations.h
+++ b/include/linux/firmware/trusted_foundations.h
@@ -71,12 +71,16 @@ static inline void register_trusted_foundations(
static inline void of_register_trusted_foundations(void)
{
+ struct device_node *np = of_find_compatible_node(NULL, NULL, "tlm,trusted-foundations");
+
+ if (!np)
+ return;
+ of_node_put(np);
/*
* If we find the target should enable TF but does not support it,
* fail as the system won't be able to do much anyway
*/
- if (of_find_compatible_node(NULL, NULL, "tlm,trusted-foundations"))
- register_trusted_foundations(NULL);
+ register_trusted_foundations(NULL);
}
static inline bool trusted_foundations_registered(void)
--
2.25.1