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drm/vc4: Release runtime PM reference after binding V3D

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The vc4_v3d_bind() function acquires a runtime PM reference via
pm_runtime_resume_and_get() to access V3D registers during setup.
However, this reference is never released after a successful bind.
This prevents the device from ever runtime suspending, since the
reference count never reaches zero.

Release the runtime PM reference by adding pm_runtime_put_autosuspend()
after autosuspend is configured, allowing the device to runtime suspend
after the delay.

Fixes: 266cff37d7 ("drm/vc4: v3d: Rework the runtime_pm setup")
Reviewed-by: Melissa Wen <mwen@igalia.com>
Link: https://patch.msgid.link/20260330-vc4-misc-fixes-v1-1-92defc940a29@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
This commit is contained in:
Maíra Canal
2026-03-30 14:51:43 -03:00
parent f8995c2df5
commit aaefbdde9a
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/vc4/vc4_v3d.c
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@@ -481,6 +481,7 @@ static int vc4_v3d_bind(struct device *dev, struct device *master, void *data)
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, 40); /* a little over 2 frames. */
pm_runtime_put_autosuspend(dev);
return 0;