drm/exynos: gem: Remove dead-code

The ExynosDRM page fault handler is never used, drm_gem_mmap()
always calls exynos_drm_gem_mmap() function, which perform
complete mapping for the given virtual address-space area.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 57defeb..dbd80f1 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -76,7 +76,6 @@ static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 }
 
 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
-       .fault = exynos_drm_gem_fault,
        .open = drm_gem_vm_open,
        .close = drm_gem_vm_close,
 };

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index d734d9d..40514d3 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -381,26 +381,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
        return 0;
 }
 
-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));
-}
-
 static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj,
                                   struct vm_area_struct *vma)
 {

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index 42ec67b..f00044c 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -101,9 +101,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
                               struct drm_device *dev,
                               struct drm_mode_create_dumb *args);
 
-/* page fault handler and mmap fault address(virtual) to physical memory. */
-vm_fault_t exynos_drm_gem_fault(struct vm_fault *vmf);
-
 /* set vm_flags and we can change the vm attribute to other one at here. */
 int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);