-vm_fault_t exynos_drm_gem_fault(struct vm_fault *vmf)
-{
- struct vm_area_struct *vma = vmf->vma;
- struct drm_gem_object *obj = vma->vm_private_data;
- struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj);
- unsigned long pfn;
- pgoff_t page_offset;
-
- page_offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT;
-
- if (page_offset >= (exynos_gem->size >> PAGE_SHIFT)) {
- DRM_ERROR("invalid page offset\n");
- return VM_FAULT_SIGBUS;
- }
-
- pfn = page_to_pfn(exynos_gem->pages[page_offset]);
- return vmf_insert_mixed(vma, vmf->address,
- __pfn_to_pfn_t(pfn, PFN_DEV));
-}
-