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-rw-r--r--drm/nouveau/nvkm/subdev/instmem/gk20a.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drm/nouveau/nvkm/subdev/instmem/gk20a.c b/drm/nouveau/nvkm/subdev/instmem/gk20a.c
index 4c20fec64..6b8f2a19b 100644
--- a/drm/nouveau/nvkm/subdev/instmem/gk20a.c
+++ b/drm/nouveau/nvkm/subdev/instmem/gk20a.c
@@ -228,6 +228,8 @@ gk20a_instobj_release_dma(struct nvkm_memory *memory)
struct gk20a_instmem *imem = node->imem;
struct nvkm_ltc *ltc = imem->base.subdev.device->ltc;
+ /* in case we got a write-combined mapping */
+ wmb();
nvkm_ltc_invalidate(ltc);
}