[PATCH v2 0/6] drm/vc4: kms: Misc fixes for HVS commits

Maxime Ripard maxime at cerno.tech
Wed Nov 17 09:45:21 UTC 2021


Hi,

The conversion to DRM commit helpers (f3c420fe19f8, "drm/vc4: kms: Convert to
atomic helpers") introduced a number of issues in corner cases, most of them
showing themselves in the form of either a vblank timeout or use-after-free
error.

These patches should fix most of them, some of them still being debugged.

Maxime

Changes from v1:
  - Prevent a null pointer dereference

Maxime Ripard (6):
  drm/vc4: kms: Wait for the commit before increasing our clock rate
  drm/vc4: kms: Fix return code check
  drm/vc4: kms: Add missing drm_crtc_commit_put
  drm/vc4: kms: Clear the HVS FIFO commit pointer once done
  drm/vc4: kms: Don't duplicate pending commit
  drm/vc4: kms: Fix previous HVS commit wait

 drivers/gpu/drm/vc4/vc4_kms.c | 42 ++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 23 deletions(-)

-- 
2.33.1



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