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SubjectRe: [PATCH] drm/drm_vm: Mark expected switch fall-throughs
On Fri, Feb 15, 2019 at 11:05:46AM -0600, Gustavo A. R. Silva wrote:
> 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>

Queued for 5.2, thanks for your patch.
-Daniel

> ---
> drivers/gpu/drm/drm_vm.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
> index c3301046dfaa..8987501f53b2 100644
> --- a/drivers/gpu/drm/drm_vm.c
> +++ b/drivers/gpu/drm/drm_vm.c
> @@ -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;
> --
> 2.20.1
>

--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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