Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220628021640.4015-1-windhl@126.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Liang He
and committed by
Greg Kroah-Hartman
c882716b
a244ec36
+6
-2
+6
-2
include/linux/firmware/trusted_foundations.h
+6
-2
include/linux/firmware/trusted_foundations.h
···
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static inline void of_register_trusted_foundations(void)
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{
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struct device_node *np = of_find_compatible_node(NULL, NULL, "tlm,trusted-foundations");
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+
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if (!np)
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return;
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of_node_put(np);
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/*
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* If we find the target should enable TF but does not support it,
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* fail as the system won't be able to do much anyway
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*/
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if (of_find_compatible_node(NULL, NULL, "tlm,trusted-foundations"))
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register_trusted_foundations(NULL);
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register_trusted_foundations(NULL);
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}
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static inline bool trusted_foundations_registered(void)