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ELPG initialization thread creation can fail when the process is killed. That leads to driver resume failure. That thread was stopped on suspend and re-created on resume. To avoid the issue above, don't stop the ELPG thread in suspend and let the first created thread handle the ELPG state transitions always. And stop the ELPG thread during unload. Also fix couple of instances of config flag as: s/CONFIG_PMU_POWER_PG/CONFIG_NVGPU_POWER_PG bug 3345977 Change-Id: I8952edf8d1664ed258f238e265002e716d1bf5c2 Signed-off-by: Sagar Kamble <skamble@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2573763 Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: Ashish Mhetre <amhetre@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit