[PATCH v2 0/4] drm/msm/adreno: fix runtime PM imbalance at unbind

Johan Hovold
2023-03-03T16:49:08Z

As reported by Bjorn, we can end up with an unbalanced runtime PM
disable count if unbind() is called before the DRM device is opened
(e.g. if component bind fails due to the panel driver not having been
loaded yet).

As runtime PM must currently stay disabled until the firmware has been
loaded, fix this by making the runtime PM disable call at unbind()
conditional.

The rest of the series fixes further imbalances in the load_gpu() error
paths and removes a bogus pm_runtime_set_active() call. Included is also
a related indentation cleanup.

Johan

Changes in v2
- fix the runtime PM imbalance in the gpu load error paths (new)

- drop the patch removing the pm_runtime_disable() from
adreno_gpu_cleanup() as this function can currently still be called
with runtime PM enabled if suspending the scheduler in
adreno_system_suspend() at unbind fails

Johan Hovold (4):
drm/msm/adreno: fix runtime PM imbalance at unbind
drm/msm/adreno: fix runtime PM imbalance at gpu load
drm/msm/adreno: drop bogus pm_runtime_set_active()
drm/msm/adreno: clean up component ops indentation

drivers/gpu/drm/msm/adreno/adreno_device.c | 26 +++++++++++++---------
1 file changed, 16 insertions(+), 10 deletions(-)

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2.39.2