Create new devicetree node lifecycle tests. The tests introduce use of EXPECT_NOT messages, similar to EXPECT messages. This requires updating scripts/dtc/of_unittest_expect to process EXPECT_NOT messages. The new tests revealed an issue in printk formatting when using format "%pOF" on a node with a reference count of zero. A patch is included to the fix the caller which revealed the issue. Update kconfig unittest help to further explain that unittests should only be enabled for developer kernels. Also add info about using scripts/dtc/of_unittest_expect to process the output of unittests. Add an additional consistency check to of_node_release(), which is the function that potentially frees node related memory when the node's reference count is decremented to zero. Add docbook documentation to the devicetree node creation functions about caller responsibility to call of_node_put() and how the memory free process works. Frank Rowand (7): of: prepare to add processing of EXPECT_NOT to of_unittest_expect of: add processing of EXPECT_NOT to of_unittest_expect of: update kconfig unittest help of: unittest: add node lifecycle tests of: do not use "%pOF" printk format on node with refcount of zero of: add consistency check to of_node_release() of: dynamic: add lifecycle docbook info to node creation functions drivers/of/Kconfig | 14 +- drivers/of/dynamic.c | 31 ++- .../of/unittest-data/testcases_common.dtsi | 1 + drivers/of/unittest-data/tests-lifecycle.dtsi | 8 + drivers/of/unittest.c | 148 +++++++++++++- include/linux/of.h | 11 ++ scripts/dtc/of_unittest_expect | 183 +++++++++++++++--- 7 files changed, 365 insertions(+), 31 deletions(-) create mode 100644 drivers/of/unittest-data/tests-lifecycle.dtsi -- Frank Rowand <frowand.list@xxxxxxxxx>
