linux-kernel - [PATCH 0/4] drm/vc4: tests: Fix locking failures

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Message-Id: <20250318-drm-vc4-kunit-failures-v1-0-779864d9ab37@kernel.org>
Date: Tue, 18 Mar 2025 15:17:36 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Dave Stevenson <dave.stevenson@...pberrypi.com>, 
 Maíra Canal <mcanal@...lia.com>, 
 Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
 Simona Vetter <simona@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Maxime Ripard <mripard@...nel.org>
Subject: [PATCH 0/4] drm/vc4: tests: Fix locking failures

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@...nel.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 | 85 +++++++++++++++++++++-----
 2 files changed, 121 insertions(+), 26 deletions(-)
---
base-commit: c0988d693eb10e115d95747f8a0cccc83babb3fc
change-id: 20250318-drm-vc4-kunit-failures-313b4775c438

Best regards,
-- 
Maxime Ripard <mripard@...nel.org>