Commit 8eaf9b02 authored by Jonathan Marek's avatar Jonathan Marek Committed by Rob Clark
Browse files

drm/msm: remove unnecessary mmap logic for cached BOs 



No one knows what this is for anymore, so just remove it.

Signed-off-by: default avatarJonathan Marek <jonathan@marek.ca>
Acked-by: default avatarJordan Crouse <jordan@cosmicpenguin.net>
Link: https://lore.kernel.org/r/20210423190833.25319-2-jonathan@marek.ca


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent d91940e2

drivers/gpu/drm/msm/msm_gem.c

+3 −12
Original line number Diff line number Diff line
@@ -219,21 +219,12 @@ 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;

}