drm/radeon/kms: implement the bo busy ioctl properly.

The previous patch assumes the ioctl already existed, when
it actually didn't.

It also didn't return the correct error code.

Signed-off-by: Dave Airlie <airlied@redhat.com>

2 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index d4ceff13bbb1..14c199802920 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -283,7 +283,7 @@ int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
         mutex_lock(&dev->struct_mutex);
         drm_gem_object_unreference(gobj);
         mutex_unlock(&dev->struct_mutex);
-        return 0;
+        return r;
 }
 
 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index d2764bf6b2a2..11ed672543b1 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -318,5 +318,6 @@ struct drm_ioctl_desc radeon_ioctls_kms[] = {
         DRM_IOCTL_DEF(DRM_RADEON_INFO, radeon_info_ioctl, DRM_AUTH),
         DRM_IOCTL_DEF(DRM_RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH),
         DRM_IOCTL_DEF(DRM_RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH),
+        DRM_IOCTL_DEF(DRM_RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH),
 };
 int radeon_max_kms_ioctl = DRM_ARRAY_SIZE(radeon_ioctls_kms);