diff options
| author | Thomas Hellstrom <thellstrom@vmware.com> | 2015-08-27 10:06:24 -0700 |
|---|---|---|
| committer | Thomas Hellstrom <thellstrom@vmware.com> | 2015-09-01 02:06:02 -0700 |
| commit | aa3469ce7afd86a670d22375a64f1b5a06707725 (patch) | |
| tree | f36aae88ccb3d764e8ecd4e1e168fcd00ff0e43b /drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | |
| parent | 36d4e87b497d9cb3bf8e1bb2f803c7aa41dfb463 (diff) | |
drm/vmwgfx: Allow dropped masters render-node like access on legacy nodes v2
Applications like gnome-shell may try to render after dropping master
privileges. Since the driver should now be safe against this scenario,
allow those applications to use their legacy node like a render node.
v2: Add missing return statement.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c index 5b8595b78429..3361769842f4 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c @@ -911,6 +911,12 @@ vmw_surface_handle_reference(struct vmw_private *dev_priv, "surface reference.\n"); return -EACCES; } + if (ACCESS_ONCE(vmw_fpriv(file_priv)->locked_master)) { + DRM_ERROR("Locked master refused legacy " + "surface reference.\n"); + return -EACCES; + } + handle = u_handle; } |