1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index c6322197db8c..4a0dce587745 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -606,14 +606,17 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
         iommu = iommu_domain_alloc(&platform_bus_type);
         if (iommu) {
                 dev_info(drm->dev, "%s: using IOMMU\n", name);
-                gpu->mmu = msm_iommu_new(drm, iommu);
+                gpu->mmu = msm_iommu_new(&pdev->dev, iommu);
         } else {
                 dev_info(drm->dev, "%s: no IOMMU, fallback to VRAM carveout!\n", name);
         }
         gpu->id = msm_register_mmu(drm, gpu->mmu);
 
+
         /* Create ringbuffer: */
+        mutex_lock(&drm->struct_mutex);
         gpu->rb = msm_ringbuffer_new(gpu, ringsz);
+        mutex_unlock(&drm->struct_mutex);
         if (IS_ERR(gpu->rb)) {
                 ret = PTR_ERR(gpu->rb);
                 gpu->rb = NULL;
@@ -621,13 +624,6 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
                 goto fail;
         }
 
-        ret = msm_gem_get_iova_locked(gpu->rb->bo, gpu->id, &gpu->rb_iova);
-        if (ret) {
-                gpu->rb_iova = 0;
-                dev_err(drm->dev, "could not map ringbuffer: %d\n", ret);
-                goto fail;
-        }
-
         bs_init(gpu);
 
         return 0;