Commit c882716b authored by Liang He's avatar Liang He Committed by Greg Kroah-Hartman
Browse files

firmware: Hold a reference for of_find_compatible_node() 



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: default avatarLiang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220628021640.4015-1-windhl@126.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a244ec36

include/linux/firmware/trusted_foundations.h

+6 −2
Original line number Diff line number Diff line
@@ -71,11 +71,15 @@ 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);

}