Re: [PATCH 1/5] drm/msm: remove unnecessary mmap logic for cached BOs

Jordan Crouse
2021-05-02T19:51:42Z

On Fri, Apr 23, 2021 at 03:08:17PM -0400, Jonathan Marek wrote:
> No one knows what this is for anymore, so just remove it.

Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>

> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> ---
> drivers/gpu/drm/msm/msm_gem.c | 15 +++------------
> 1 file changed, 3 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
> index b199942266a2..09abda42d764 100644
> --- a/drivers/gpu/drm/msm/msm_gem.c
> +++ b/drivers/gpu/drm/msm/msm_gem.c
> @@ -207,21 +207,12 @@ int msm_gem_mmap_obj(struct drm_gem_object *obj,
> vma->vm_flags &= ~VM_PFNMAP;
> vma->vm_flags |= VM_MIXEDMAP;
>
> - if (msm_obj->flags & MSM_BO_WC) {
> + if (msm_obj->flags & MSM_BO_WC)
> vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
> - } else if (msm_obj->flags & MSM_BO_UNCACHED) {
> + else if (msm_obj->flags & MSM_BO_UNCACHED)
> vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags));
> - } else {
> - /*
> - * Shunt off cached objs to shmem file so they have their own
> - * address_space (so unmap_mapping_range does what we want,
> - * in particular in the case of mmap'd dmabufs)
> - */
> - vma->vm_pgoff = 0;
> - vma_set_file(vma, obj->filp);
> -
> + else
> vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
> - }
>
> return 0;
> }
> --
> 2.26.1
>
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