drm: drm_vm: Use fallthrough;

Convert /* fallthrough */ style comments to fallthrough;

Convert the various uses of fallthrough comments to fallthrough;

Done via script
Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe@perches.com/
And by hand:

This file has a fallthrough comment outside of an #ifdef block
that causes gcc to emit a warning if converted in-place.

So move the new fallthrough; inside the containing #ifdef/#endif too.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/398db73cdc8a584fd7f34f5013c04df13ba90f64.1584040050.git.joe@perches.com

diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index aa88911..56197ae 100644 (file)
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -595,8 +595,8 @@ static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
                        vma->vm_ops = &drm_vm_ops;
                        break;
                }
+               fallthrough;    /* to _DRM_FRAME_BUFFER... */
 #endif
-               /* fall through - to _DRM_FRAME_BUFFER... */
        case _DRM_FRAME_BUFFER:
        case _DRM_REGISTERS:
                offset = drm_core_get_reg_ofs(dev);
@@ -621,7 +621,7 @@ static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
                    vma->vm_end - vma->vm_start, vma->vm_page_prot))
                        return -EAGAIN;
                vma->vm_page_prot = drm_dma_prot(map->type, vma);
-               /* fall through - to _DRM_SHM */
+               fallthrough;    /* to _DRM_SHM */
        case _DRM_SHM:
                vma->vm_ops = &drm_vm_shm_ops;
                vma->vm_private_data = (void *)map;