diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_kms.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_kms.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/gpu/drm/msm/msm_kms.c b/drivers/gpu/drm/msm/msm_kms.c index 56828d218e88..6e5e94f5c9a7 100644 --- a/drivers/gpu/drm/msm/msm_kms.c +++ b/drivers/gpu/drm/msm/msm_kms.c @@ -177,12 +177,11 @@ static int msm_kms_fault_handler(void *arg, unsigned long iova, int flags, void return -ENOSYS; } -struct drm_gpuvm *msm_kms_init_vm(struct drm_device *dev) +struct drm_gpuvm *msm_kms_init_vm(struct drm_device *dev, struct device *mdss_dev) { struct drm_gpuvm *vm; struct msm_mmu *mmu; struct device *mdp_dev = dev->dev; - struct device *mdss_dev = mdp_dev->parent; struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; struct device *iommu_dev; @@ -193,18 +192,17 @@ struct drm_gpuvm *msm_kms_init_vm(struct drm_device *dev) */ if (device_iommu_mapped(mdp_dev)) iommu_dev = mdp_dev; - else + else if (mdss_dev && device_iommu_mapped(mdss_dev)) iommu_dev = mdss_dev; + else { + drm_info(dev, "no IOMMU, bailing out\n"); + return ERR_PTR(-ENODEV); + } mmu = msm_iommu_disp_new(iommu_dev, 0); if (IS_ERR(mmu)) return ERR_CAST(mmu); - if (!mmu) { - drm_info(dev, "no IOMMU, fallback to phys contig buffers for scanout\n"); - return NULL; - } - vm = msm_gem_vm_create(dev, mmu, "mdp_kms", 0x1000, 0x100000000 - 0x1000, true); if (IS_ERR(vm)) { |