of: unittest: kmemleak on changeset destroy

kmemleak reports several memory leaks from devicetree unittest.
This is the fix for problem 1 of 5.

of_unittest_changeset() reaches deeply into the dynamic devicetree
functions.  Several nodes were left with an elevated reference
count and thus were not properly cleaned up.  Fix the reference
counts so that the memory will be freed.

Fixes: 201c910bd689 ("of: Transactional DT support.")
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 7e27670c36163f0c0e82ed254806b11d843b8a9b..20ff2dfc314362f9566bda13894f8ddc9df14a2b 100644 (file)
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -861,6 +861,10 @@ static void __init of_unittest_changeset(void)
        unittest(!of_changeset_revert(&chgset), "revert failed\n");
 
        of_changeset_destroy(&chgset);
+
+       of_node_put(n1);
+       of_node_put(n2);
+       of_node_put(n21);
 #endif
 }