gpu: nvgpu: fix pmu state change for dgpu boot

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>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/pmu/pmu_pg.c b/drivers/gpu/nvgpu/common/pmu/pmu_pg.c
index ca74f243..935ae95a 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmu_pg.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmu_pg.c
@@ -81,7 +81,7 @@ static void pmu_handle_pg_elpg_msg(struct gk20a *g, struct pmu_msg *msg,
                                 PMU_PG_FEATURE_GR_POWER_GATING_ENABLED) {
                                 pmu->initialized = true;
                                 nvgpu_pmu_state_change(g, PMU_STATE_STARTED,
-                                        false);
+                                        true);
                                 WRITE_ONCE(pmu->mscg_stat, PMU_MSCG_DISABLED);
                                 /* make status visible */
                                 smp_mb();