[PATCH 190/459] drm/amdgpu/gfx10: fix resume failure when enabling async gfx ring

[Alex Deucher]

From: Xiaojie Yuan <xiaojie.yuan at amd.com>

'adev->in_suspend' code path is missing in gfx_v10_0_gfx_init_queue()

Signed-off-by: Xiaojie Yuan <xiaojie.yuan at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 4e7f64d91d12..9d162d269aca 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -2903,7 +2903,19 @@ static int gfx_v10_0_gfx_init_queue(struct amdgpu_ring *ring)
 	struct amdgpu_device *adev = ring->adev;
 	struct v10_gfx_mqd *mqd = ring->mqd_ptr;
 
-	if (adev->in_gpu_reset) {
+	if (!adev->in_gpu_reset && !adev->in_suspend) {
+		memset((void *)mqd, 0, sizeof(*mqd));
+		mutex_lock(&adev->srbm_mutex);
+		nv_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
+		gfx_v10_0_gfx_mqd_init(ring);
+#ifdef BRING_UP_DEBUG
+		gfx_v10_0_gfx_queue_init_register(ring);
+#endif
+		nv_grbm_select(adev, 0, 0, 0, 0);
+		mutex_unlock(&adev->srbm_mutex);
+		if (adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS])
+			memcpy(adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS], mqd, sizeof(*mqd));
+	} else if (adev->in_gpu_reset) {
 		/* reset mqd with the backup copy */
 		if (adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS])
 			memcpy(mqd, adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS], sizeof(*mqd));
@@ -2918,17 +2930,7 @@ static int gfx_v10_0_gfx_init_queue(struct amdgpu_ring *ring)
 		mutex_unlock(&adev->srbm_mutex);
 #endif
 	} else {
-		memset((void *)mqd, 0, sizeof(*mqd));
-		mutex_lock(&adev->srbm_mutex);
-		nv_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
-		gfx_v10_0_gfx_mqd_init(ring);
-#ifdef BRING_UP_DEBUG
-		gfx_v10_0_gfx_queue_init_register(ring);
-#endif
-		nv_grbm_select(adev, 0, 0, 0, 0);
-		mutex_unlock(&adev->srbm_mutex);
-		if (adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS])
-			memcpy(adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS], mqd, sizeof(*mqd));
+		amdgpu_ring_clear_ring(ring);
 	}
 
 	return 0;
-- 
2.20.1