Commit 6bd9e877 authored Oct 20, 2015 by Vitaly Prosyak Committed by Alex Deucher Feb 10, 2016

drm/amdgpu: Move MMIO flip out of spinlocked region



Prior actual  MMIO flip we need to acquire DAL mutex to guard
our target state which get modified on reset mode.
Assign page flip status before actual flip to handle
the possible race condition with interrupt.

Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 9ddf940f

drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -118,12 +118,12 @@ static void amdgpu_flip_work_func(struct work_struct *__work)
		spin_lock_irqsave(&crtc->dev->event_lock, flags);
		};

		/* do the flip (mmio) */
		adev->mode_info.funcs->page_flip(adev, work->crtc_id, work->base);
		/* set the flip status */
		amdgpuCrtc->pflip_status = AMDGPU_FLIP_SUBMITTED;

		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);

		/* Do the flip (mmio) */
		adev->mode_info.funcs->page_flip(adev, work->crtc_id, work->base);
		}

		/*