diff options
| author |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-23 08:01:20 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-23 08:01:20 +0100 |
| commit | 6203da9803017701da5782998157d9826215059d (patch) | |
| tree | 1d754f139ac25c643e88f429966606d3b44e431f /drivers/gpu/drm/drm_gem_shmem_helper.c | |
| parent | staging: vt6656: Use BIT() macro in vnt_mac_reg_bits_* functions (diff) | |
| parent | Linux 5.6-rc7 (diff) | |
| download | linux-dev-6203da9803017701da5782998157d9826215059d.tar.xz linux-dev-6203da9803017701da5782998157d9826215059d.zip | |
Merge 5.6-rc7 into staging-next
We need the staging/iio fixes in here as well
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/drm_gem_shmem_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_gem_shmem_helper.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index a421a2eed48a..df31e5782eed 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -254,11 +254,16 @@ static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem) if (ret) goto err_zero_use; - if (obj->import_attach) + if (obj->import_attach) { shmem->vaddr = dma_buf_vmap(obj->import_attach->dmabuf); - else + } else { + pgprot_t prot = PAGE_KERNEL; + + if (!shmem->map_cached) + prot = pgprot_writecombine(prot); shmem->vaddr = vmap(shmem->pages, obj->size >> PAGE_SHIFT, - VM_MAP, pgprot_writecombine(PAGE_KERNEL)); + VM_MAP, prot); + } if (!shmem->vaddr) { DRM_DEBUG_KMS("Failed to vmap pages\n"); @@ -540,8 +545,9 @@ int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) } vma->vm_flags |= VM_MIXEDMAP | VM_DONTEXPAND; - vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); - vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + if (!shmem->map_cached) + vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); vma->vm_ops = &drm_gem_shmem_vm_ops; return 0; |