drm/msm/adreno: fix runtime PM imbalance at gpu load

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commit 0d997f95b7 upstream.

A recent commit moved enabling of runtime PM to GPU load time (first
open()) but failed to update the error paths so that runtime PM is
disabled if initialisation of the GPU fails. This would trigger a
warning about the unbalanced disable count on the next open() attempt.

Note that pm_runtime_put_noidle() is sufficient to balance the usage
count when pm_runtime_put_sync() fails (and is chosen over
pm_runtime_resume_and_get() for consistency reasons).

Fixes: 4b18299b33 ("drm/msm/adreno: Defer enabling runpm until hw_init()")
Cc: stable@vger.kernel.org      # 6.0
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/524971/
Link: https://lore.kernel.org/r/20230303164807.13124-3-johan+linaro@kernel.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2023-03-03 17:48:05 +01:00 • committed by Greg Kroah-Hartman

parent 3d0fdfefb3

commit 47bfe12804

1 changed files with 12 additions and 4 deletions

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drivers/gpu/drm/msm/adreno/adreno_device.c

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