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In pmu_handle_pg_elpg_msg, when processing ELPG_MSG_DISALLOW_ACK, if current pmu state is ELPG_BOOTING and GR_POWER_GATING is not supported, make sure nvgpu_pmu_state_change updates the state_change flag, since PMU is now fully initialized. In particular, this fixes PMU boot for dgpu, which does not support GR_POWER_GATING. JIRA EVLR-1776 Change-Id: I2feb97b0fb8248e9cb7945ac3189877c21815a4a Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1539102 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Nirav Patel <nipatel@nvidia.com>