[00/12] clk: Unit test clk unregistration paths

Message

Stephen Boyd Aug. 15, 2024, 12:55 a.m. UTC

The clk_hw_unregister() path is rarely used and almost entirely
untested. Case in point, the first patch in this series that fixes a bug
due to unregistering a clk_hw and calling clk_put(). Add unit tests for
this code and test the consumer APIs to make sure the behavior stays
consistent.

The last patch is a WIP because I haven't gotten around to fixing all
the problems.

Cc: Brendan Higgins <[e-mail]>
Cc: David Gow <[e-mail]>
Cc: Rae Moar <[e-mail]>

Nuno Sá (1):
  clk: Fix clk not being unlinked from consumers list

Stephen Boyd (11):
  clk: test: Introduce clk_hw_unregister_kunit()
  clk: test: Introduce clk_put_kunit()
  clk: Add tests for unregistering clk_hw and using consumer APIs
  clk: Fail phase APIs after clk_hw is unregistered
  clk: Test clk_get_phase() behavior after clk_hw is unregistered
  clk: Fail duty cycle APIs after clk_hw is unregistered
  clk: Test clk_set_duty_cycle() behavior after clk_hw is unregistered
  clk: Prevent unregistered clk_hw from being reinserted into clk tree
  clk: Test clk_set_parent() behavior after clk_hw is unregistered
  clk: Test parent/clk flags combos while unregistering a clk_hw
  WIP: clk: Test behavior of children clks after a parent is
    unregistered

 drivers/clk/clk.c               |  26 +-
 drivers/clk/clk_kunit_helpers.c |  46 ++
 drivers/clk/clk_test.c          | 720 ++++++++++++++++++++++++++++++++
 include/kunit/clk.h             |   2 +
 4 files changed, 791 insertions(+), 3 deletions(-)


base-commit: 274aff8711b2e77c27bbda0ddc24caa39f154bfa