30.09.2020 08:10, Dmitry Osipenko пишет: > 30.09.2020 03:30, Nicolin Chen пишет: >> static void tegra_smmu_release_device(struct device *dev) > > The tegra_get_memory_controller() uses of_find_device_by_node(), hence > tegra_smmu_release_device() should put_device(mc) in order to balance > back the refcounting. > Actually, the put_device(mc) should be right after tegra_get_memory_controller() in tegra_smmu_probe_device() because SMMU is a part of MC, hence MC can't just go away.
