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26423cad95
- With ELPG + RG enabled, gpu_module_reload test fails. - This happens because the test tries to unload nvgpu.ko module and then reload it. This all happens with RG enabled. - During rmmod of nvgpu.ko module the code path taken is: nvgpu_remove() -> nvgpu_quiesce() -> gk20a_pm_prepare_poweroff -> nvgpu_prepare_poweroff -> pmu_destroy - In this code path, NVGPU_DRIVER_IS_DYING flag is not set. - Thus, in pmu_pg_task thread (which keeps on running in parallel), commands are sent to the PMU and the driver keeps waiting for the ACK in nvgpu_pmu_wait_fw_ack_status(). - Add nvgpu_start_gpu_idle() in nvgpu_remove() path, before calling nvgpu_quiesce(). - This will set NVGPU_DRIVER_IS_DYING flag to true. - nvgpu_can_busy() will return 0 when the driver is shutting down or getting removed. Bug 3676200 Bug 3756912 Change-Id: Ic24f58c210e4b477e5d560b053b70c16308e16f1 Signed-off-by: Divya <dsinghatwari@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2762310 (cherry picked from commit 8f1792565e71b822a6e9cc50af4b43c1b48518e0) Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2819082 Reviewed-by: Mahantesh Kumbar <mkumbar@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>