diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-02-07 09:59:30 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-03-19 15:03:53 -0500 |
| commit | bed2dd84212eb0151ae3bfc39cdaa25a951749c1 (patch) | |
| tree | da3155580e0fa7b603bb4fbdb163fcdf497f5ffd /drivers/gpu/drm/cirrus | |
| parent | 7d1500f9fbfc78e6a34be3f8f4b5ba13e8227199 (diff) | |
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/cirrus')
| -rw-r--r-- | drivers/gpu/drm/cirrus/cirrus_ttm.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/gpu/drm/cirrus/cirrus_ttm.c b/drivers/gpu/drm/cirrus/cirrus_ttm.c index 223a75ba77a8..e6b98467a428 100644 --- a/drivers/gpu/drm/cirrus/cirrus_ttm.c +++ b/drivers/gpu/drm/cirrus/cirrus_ttm.c @@ -330,13 +330,8 @@ int cirrus_bo_push_sysram(struct cirrus_bo *bo) int cirrus_mmap(struct file *filp, struct vm_area_struct *vma) { - struct drm_file *file_priv; - struct cirrus_device *cirrus; + struct drm_file *file_priv = filp->private_data; + struct cirrus_device *cirrus = file_priv->minor->dev->dev_private; - if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) - return -EINVAL; - - file_priv = filp->private_data; - cirrus = file_priv->minor->dev->dev_private; return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev); } |