[PATCH 2/3] drm/msm/a6xx: Skip snapshotting unused GMU buffers

[Rob Clark]

From: Rob Clark <robdcl...@chromium.org>

Some buffers are unused on certain sub-generations of a6xx.  So just
skip them.

Signed-off-by: Rob Clark <robdcl...@chromium.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c 
b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 730355f9e2d4..b0124d0f286c 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -813,6 +813,9 @@ static struct msm_gpu_state_bo *a6xx_snapshot_gmu_bo(
 {
        struct msm_gpu_state_bo *snapshot;
 
+       if (!bo->size)
+               return NULL;
+
        snapshot = state_kcalloc(a6xx_state, 1, sizeof(*snapshot));
        if (!snapshot)
                return NULL;
-- 
2.37.3