drm/nouveau/nvkm: add a replacement for nvkm_notify

This replaces the twisty, confusing, relationship between nvkm_event and
nvkm_notify with something much simpler, and less racey.  It also places
events in the object tree hierarchy, which will allow a heap of the code
tracking events across allocation/teardown/suspend to be removed.

This commit just adds the new interfaces, and passes the owning subdev to
the event constructor to enable debug-tracing in the new code.

v2:
- use ?: (lyude)

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
index 58b8df75fc40..c94b2b9b9329 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
@@ -347,11 +347,11 @@ nvkm_fifo_ctor(const struct nvkm_fifo_func *func, struct nvkm_device *device,
 		return ret;
 
 	if (func->uevent_init) {
-		ret = nvkm_event_init(&nvkm_fifo_uevent_func, 1, 1,
+		ret = nvkm_event_init(&nvkm_fifo_uevent_func, &fifo->engine.subdev, 1, 1,
 				      &fifo->uevent);
 		if (ret)
 			return ret;
 	}
 
-	return nvkm_event_init(&nvkm_fifo_kevent_func, 1, nr, &fifo->kevent);
+	return nvkm_event_init(&nvkm_fifo_kevent_func, &fifo->engine.subdev, 1, nr, &fifo->kevent);
 }