diff options
Diffstat (limited to 'include/drm/drm_legacy.h')
| -rw-r--r-- | include/drm/drm_legacy.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/drm/drm_legacy.h b/include/drm/drm_legacy.h index a0fabf7624e..6486306beb0 100644 --- a/include/drm/drm_legacy.h +++ b/include/drm/drm_legacy.h @@ -161,6 +161,23 @@ struct drm_local_map *drm_legacy_getsarea(struct drm_device *dev); int drm_legacy_addbufs_agp(struct drm_device *d, struct drm_buf_desc *req); int drm_legacy_addbufs_pci(struct drm_device *d, struct drm_buf_desc *req); +/** + * Test that the hardware lock is held by the caller, returning otherwise. + * + * \param dev DRM device. + * \param filp file pointer of the caller. + */ +#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \ +do { \ + if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \ + _file_priv->master->lock.file_priv != _file_priv) { \ + DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\ + __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\ + _file_priv->master->lock.file_priv, _file_priv); \ + return -EINVAL; \ + } \ +} while (0) + void drm_legacy_idlelock_take(struct drm_lock_data *lock); void drm_legacy_idlelock_release(struct drm_lock_data *lock); |