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Commit ef6e6cf5 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
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drm/radeon/kms: wait for gpu idle before changing power mode 



set proper wait condition as noted by Rafał Miłecki.

Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 2031f77c

drivers/gpu/drm/radeon/radeon_pm.c

+10 −0
Original line number Diff line number Diff line
@@ -378,6 +378,16 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev) 
	radeon_get_power_state(rdev, rdev->pm.planned_action);

	mutex_lock(&rdev->cp.mutex);



	/* wait for GPU idle */

	rdev->pm.gui_idle = false;

	rdev->irq.gui_idle = true;

	radeon_irq_set(rdev);

	wait_event_interruptible_timeout(

		rdev->irq.idle_queue, rdev->pm.gui_idle,

		msecs_to_jiffies(RADEON_WAIT_IDLE_TIMEOUT));

	rdev->irq.gui_idle = false;

	radeon_irq_set(rdev);



	if (rdev->pm.active_crtcs & (1 << 0)) {

		rdev->pm.req_vblank |= (1 << 0);

		drm_vblank_get(rdev->ddev, 0);