diff options
| author | Damien Lespiau <damien.lespiau@intel.com> | 2013-09-25 16:45:25 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-10-01 07:45:29 +0200 |
| commit | a3ff6d5609145b06f602a5bc8e8bdbf66b96370b (patch) | |
| tree | 41ac32841301c8dad56ac426714982eb2abad380 /drivers/gpu/drm/drm_crtc.c | |
| parent | 1deee8d76724b478240f1bba5affe017e4f9bfa3 (diff) | |
| download | linux-a3ff6d5609145b06f602a5bc8e8bdbf66b96370b.tar.bz2 | |
drm: Reject modes with more than 1 stereo flags set
When setting a stereo 3D mode, there can be only one bit set describing
the layout of the frambuffer(s). So reject invalid modes early.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 454ac8a6381c..090415f418b8 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1319,6 +1319,10 @@ static int drm_crtc_convert_umode(struct drm_display_mode *out, if (in->clock > INT_MAX || in->vrefresh > INT_MAX) return -ERANGE; + /* At most, 1 set bit describing the 3D layout of the mode */ + if (hweight32(in->flags & DRM_MODE_FLAG_3D_MASK) > 1) + return -EINVAL; + out->clock = in->clock; out->hdisplay = in->hdisplay; out->hsync_start = in->hsync_start; |