diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2016-09-26 19:30:47 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-10-21 18:22:14 +0200 |
| commit | 6e0c7c3358d4e8e9917a97348e6f77da88226cbe (patch) | |
| tree | efdc77bb795d810682447c0afde8c4751504c8a7 /drivers/gpu/drm/drm_atomic.c | |
| parent | bd2ef25d921c0d937e4bc4f5a4f98f534424c6aa (diff) | |
drm/atomic: Reject attempts to use multiple rotation angles at once
The rotation property should only accept exactly one rotation angle
at once. Let's reject attempts to set none or multiple angles.
Testcase: igt/kms_rotation_crc/bad-rotation
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-3-git-send-email-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_atomic.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 5dd70540219c1..13ce95ee458e2 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -706,6 +706,8 @@ int drm_atomic_plane_set_property(struct drm_plane *plane, } else if (property == config->prop_src_h) { state->src_h = val; } else if (property == config->rotation_property) { + if (!is_power_of_2(val & DRM_ROTATE_MASK)) + return -EINVAL; state->rotation = val; } else if (property == plane->zpos_property) { state->zpos = val; |