Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach_dev

[Dmitry Osipenko]

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.