[PATCH v2 0/4] drm/vc4: tests: Fix locking failures

[Maxime Ripard]

Hi,

This series deals with (lack of) EDEADLK handling in vc4 PV muxing
tests.

This was leading to failures with CONFIG_DEBUG_WW_MUTEX_SLOWPATH
enabled.

Maxime

Signed-off-by: Maxime Ripard <mripard at kernel.org>
---
Changes in v2:
- Fix typo in commit log.
- Enhance the backoff code 
- Link to v1: https://lore.kernel.org/r/20250318-drm-vc4-kunit-failures-v1-0-779864d9ab37@kernel.org

---
Maxime Ripard (4):
      drm/vc4: tests: Use return instead of assert
      drm/vc4: tests: Document output handling functions
      drm/vc4: tests: Stop allocating the state in test init
      drm/vc4: tests: Retry pv-muxing tests when EDEADLK

 drivers/gpu/drm/vc4/tests/vc4_mock_output.c    |  62 ++++++++--
 drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c | 154 ++++++++++++++++++++++---
 2 files changed, 189 insertions(+), 27 deletions(-)
---
base-commit: c0988d693eb10e115d95747f8a0cccc83babb3fc
change-id: 20250318-drm-vc4-kunit-failures-313b4775c438

Best regards,
-- 
Maxime Ripard <mripard at kernel.org>