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authorThomas Zimmermann <tzimmermann@suse.de>2019-02-07 09:59:30 +0100
committerAlex Deucher <alexander.deucher@amd.com>2019-03-19 21:03:53 +0100
commitbed2dd84212eb0151ae3bfc39cdaa25a951749c1 (patch)
treeda3155580e0fa7b603bb4fbdb163fcdf497f5ffd /drivers/gpu/drm/nouveau
parentdrm/ttm: Remove file_page_offset parameter from ttm_bo_device_init() (diff)
downloadlinux-bed2dd84212eb0151ae3bfc39cdaa25a951749c1.tar.xz
linux-bed2dd84212eb0151ae3bfc39cdaa25a951749c1.zip
drm/ttm: Quick-test mmap offset in ttm_bo_mmap()
A BO's address has to be at least the minimum offset. Sharing this test in ttm_bo_mmap() removes code from drivers. A full buffer-address validation is still done within drm_vma_offset_lockup_locked(). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Christian König <christian.koenig@amd.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_ttm.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index c66467232604..f0daf958e03a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -168,9 +168,6 @@ nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
struct drm_file *file_priv = filp->private_data;
struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
- if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
- return drm_legacy_mmap(filp, vma);
-
return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
}