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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index acd066d0a805..531627b0a900 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -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);
 }
 
 /*