Similar to devres equivalent, it allows to call the "release" action
directly and remove the resource from the managed resources list.
Signed-off-by: Michał Winiarski <michal.winiarski@xxxxxxxxx>
---
drivers/gpu/drm/drm_managed.c | 39 +++++++++++++++++++++++++++++++++++
include/drm/drm_managed.h | 4 ++++
2 files changed, 43 insertions(+)
diff --git a/drivers/gpu/drm/drm_managed.c b/drivers/gpu/drm/drm_managed.c
index bcd111404b128..7646f67bda4e4 100644
--- a/drivers/gpu/drm/drm_managed.c
+++ b/drivers/gpu/drm/drm_managed.c
@@ -176,6 +176,45 @@ int __drmm_add_action_or_reset(struct drm_device *dev,
}
EXPORT_SYMBOL(__drmm_add_action_or_reset);
+/**
+ * drmm_release_action - release a managed action from a &drm_device
+ * @dev: DRM device
+ * @action: function which would be called when @dev is released
+ * @data: opaque pointer, passed to @action
+ *
+ * This function calls the @action previously added by drmm_add_action()
+ * immediately.
+ * The @action is removed from the list of cleanup actions for @dev,
+ * which means that it won't be called in the final drm_dev_put().
+ */
+void drmm_release_action(struct drm_device *dev,
+ drmres_release_t action,
+ void *data)
+{
+ struct drmres *dr_match = NULL, *dr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->managed.lock, flags);
+ list_for_each_entry_reverse(dr, &dev->managed.resources, node.entry) {
+ if (dr->node.release == action) {
+ if (!data || (data && *(void **)dr->data == data)) {
+ dr_match = dr;
+ del_dr(dev, dr_match);
+ break;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&dev->managed.lock, flags);
+
+ if (WARN_ON(!dr_match))
+ return;
+
+ action(dev, data);
+
+ free_dr(dr_match);
+}
+EXPORT_SYMBOL(drmm_release_action);
+
/**
* drmm_kmalloc - &drm_device managed kmalloc()
* @dev: DRM device
diff --git a/include/drm/drm_managed.h b/include/drm/drm_managed.h
index ad08f834af408..f547b09ca0239 100644
--- a/include/drm/drm_managed.h
+++ b/include/drm/drm_managed.h
@@ -45,6 +45,10 @@ int __must_check __drmm_add_action_or_reset(struct drm_device *dev,
drmres_release_t action,
void *data, const char *name);
+void drmm_release_action(struct drm_device *dev,
+ drmres_release_t action,
+ void *data);
+
void *drmm_kmalloc(struct drm_device *dev, size_t size, gfp_t gfp) __malloc;
/**
--
2.43.0
