Merge branch 'drm-misc-next-fixes' into drm-misc-fixes

Pick up

1ed134e6526b drm/vc4: Fix VBLANK handling in crtc->enable() path

From drm-misc-next-fixes, it was applied after the last pull request
was sent from that branch. We'll send it through drm-fixes instead.

1 files changed, 14 insertions, 10 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 6bf5cea294f2..8a081e162d13 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -22,6 +22,7 @@
  */
 
 #include "amdgpu.h"
+#define MAX_KIQ_REG_WAIT	100000
 
 int amdgpu_allocate_static_csa(struct amdgpu_device *adev)
 {
@@ -105,8 +106,9 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
 	/* enable virtual display */
 	adev->mode_info.num_crtc = 1;
 	adev->enable_virtual_display = true;
+	adev->cg_flags = 0;
+	adev->pg_flags = 0;
 
-	mutex_init(&adev->virt.lock_kiq);
 	mutex_init(&adev->virt.lock_reset);
 }
 
@@ -120,17 +122,19 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
 
 	BUG_ON(!ring->funcs->emit_rreg);
 
-	mutex_lock(&adev->virt.lock_kiq);
+	mutex_lock(&kiq->ring_mutex);
 	amdgpu_ring_alloc(ring, 32);
 	amdgpu_ring_emit_rreg(ring, reg);
 	amdgpu_fence_emit(ring, &f);
 	amdgpu_ring_commit(ring);
-	mutex_unlock(&adev->virt.lock_kiq);
+	mutex_unlock(&kiq->ring_mutex);
 
-	r = dma_fence_wait(f, false);
-	if (r)
-		DRM_ERROR("wait for kiq fence error: %ld.\n", r);
+	r = dma_fence_wait_timeout(f, false, msecs_to_jiffies(MAX_KIQ_REG_WAIT));
 	dma_fence_put(f);
+	if (r < 1) {
+		DRM_ERROR("wait for kiq fence error: %ld.\n", r);
+		return ~0;
+	}
 
 	val = adev->wb.wb[adev->virt.reg_val_offs];
 
@@ -146,15 +150,15 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 
 	BUG_ON(!ring->funcs->emit_wreg);
 
-	mutex_lock(&adev->virt.lock_kiq);
+	mutex_lock(&kiq->ring_mutex);
 	amdgpu_ring_alloc(ring, 32);
 	amdgpu_ring_emit_wreg(ring, reg, v);
 	amdgpu_fence_emit(ring, &f);
 	amdgpu_ring_commit(ring);
-	mutex_unlock(&adev->virt.lock_kiq);
+	mutex_unlock(&kiq->ring_mutex);
 
-	r = dma_fence_wait(f, false);
-	if (r)
+	r = dma_fence_wait_timeout(f, false, msecs_to_jiffies(MAX_KIQ_REG_WAIT));
+	if (r < 1)
 		DRM_ERROR("wait for kiq fence error: %ld.\n", r);
 	dma_fence_put(f);
 }