Unverified Commit aaefbdde authored by Maíra Canal's avatar Maíra Canal
Browse files

drm/vc4: Release runtime PM reference after binding V3D 



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: 266cff37 ("drm/vc4: v3d: Rework the runtime_pm setup")
Reviewed-by: default avatarMelissa Wen <mwen@igalia.com>
Link: https://patch.msgid.link/20260330-vc4-misc-fixes-v1-1-92defc940a29@igalia.com


Signed-off-by: default avatarMaíra Canal <mcanal@igalia.com>
parent f8995c2d

drivers/gpu/drm/vc4/vc4_v3d.c

+1 −0
Original line number Diff line number Diff line
@@ -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;