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path: root/drivers/gpu/drm/drm_modeset_lock.c
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Diffstat (limited to 'drivers/gpu/drm/drm_modeset_lock.c')
-rw-r--r--drivers/gpu/drm/drm_modeset_lock.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c
index 8a5100685875..51f534db9107 100644
--- a/drivers/gpu/drm/drm_modeset_lock.c
+++ b/drivers/gpu/drm/drm_modeset_lock.c
@@ -56,6 +56,10 @@
* drm_modeset_drop_locks(ctx);
* drm_modeset_acquire_fini(ctx);
*
+ * For convenience this control flow is implemented in
+ * DRM_MODESET_LOCK_ALL_BEGIN() and DRM_MODESET_LOCK_ALL_END() for the case
+ * where all modeset locks need to be taken through drm_modeset_lock_all_ctx().
+ *
* If all that is needed is a single modeset lock, then the &struct
* drm_modeset_acquire_ctx is not needed and the locking can be simplified
* by passing a NULL instead of ctx in the drm_modeset_lock() call or
@@ -383,6 +387,8 @@ EXPORT_SYMBOL(drm_modeset_unlock);
* Locks acquired with this function should be released by calling the
* drm_modeset_drop_locks() function on @ctx.
*
+ * See also: DRM_MODESET_LOCK_ALL_BEGIN() and DRM_MODESET_LOCK_ALL_END()
+ *
* Returns: 0 on success or a negative error-code on failure.
*/
int drm_modeset_lock_all_ctx(struct drm_device *dev,