diff options
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 57a66093e671..df0df55d26f9 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -271,8 +271,14 @@ bool msm_use_mmu(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; - /* a2xx comes with its own MMU */ - return priv->is_a2xx || iommu_present(&platform_bus_type); + /* + * a2xx comes with its own MMU + * On other platforms IOMMU can be declared specified either for the + * MDP/DPU device or for its parent, MDSS device. + */ + return priv->is_a2xx || + device_iommu_mapped(dev->dev) || + device_iommu_mapped(dev->dev->parent); } static int msm_init_vram(struct drm_device *dev) |