nvgpu: pmu: cleanup init thread on destroy

In nvgpu_kill_task_pg_init(), call nvgpu_thread_join()
if the init thread is no longer running in order to
reclaim thread resources.

Bug 2452799
JIRA ESRM-437

Change-Id: Id9c67f689027f00039ac2df226ee9c28ad89dd1d
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1967983
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1970058
Reviewed-by: Shmuel Ungerfeld <sungerfeld@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Shmuel Ungerfeld <sungerfeld@nvidia.com>
Reviewed-by: Rahul Jain (SW-TEGRA) <rahuljain@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/pmu/pmu.c b/drivers/gpu/nvgpu/common/pmu/pmu.c
index 9bcfa14e..f86dc2c2 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmu.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmu.c
@@ -171,6 +171,8 @@ void nvgpu_kill_task_pg_init(struct gk20a *g)
                         nvgpu_udelay(2);
                 } while (nvgpu_timeout_expired_msg(&timeout,
                         "timeout - waiting PMU state machine thread stop") == 0);
+        } else {
+                nvgpu_thread_join(&pmu->pg_init.state_task);
         }
 }