drm/nouveau/disp: update SOR routing immediately on acquire()

- was previously delayed until second supervisor interrupt
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Danilo Krummrich <me@dakr.org>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-15-lyude@redhat.com

drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c

@@ -48,8 +48,8 @@ nvkm_outp_route(struct nvkm_disp *disp)
 
 	list_for_each_entry(ior, &disp->iors, head) {
 		if ((outp = ior->asy.outp)) {
-			OUTP_DBG(outp, "acquire %s", ior->name);
 			if (ior->asy.outp != ior->arm.outp) {
+				OUTP_DBG(outp, "acquire %s", ior->name);
 				if (ior->func->route.set)
 					ior->func->route.set(outp, ior);
 				ior->arm.outp = ior->asy.outp;

drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c

@@ -235,6 +235,8 @@ nvkm_uoutp_mthd_acquire(struct nvkm_outp *outp, void *argv, u32 argc)
 	if (ret)
 		return ret;
 
+	nvkm_outp_route(outp->disp);
+
 	args->v0.or = outp->ior->id;
 	args->v0.link = outp->ior->asy.link;
 	return 0;