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drm/drm_vm: Mark expected switch fall-throughs 

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190215170546.GA30950@embeddedor
hifive-unleashed-5.2
Gustavo A. R. Silva 2019-02-15 11:05:46 -06:00 committed by Daniel Vetter
parent e179d8e074
commit 58db702266
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/drm_vm.c
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@ -584,8 +584,8 @@ static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
vma->vm_ops = &drm_vm_ops;
break;
}
/* fall through 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);
@ -610,7 +610,7 @@ 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 */
/* fall through - to _DRM_SHM */
case _DRM_SHM:
vma->vm_ops = &drm_vm_shm_ops;
vma->vm_private_data = (void *)map;