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v1: Ideally power gate/ungate requests shouldn't come when smu block is uninitialized. Add a WARN message to check the origins if such a thing ever happens. v2: Use dev_WARN to log device info (Felix/Guchun). Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Guchun Chen <guchun.chen@amd.com> Reviewed-by: Kevin Yang <kevinyang.wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>