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gk20a_busy ref count is needed to track if there no one has taken ref and processing something to avoid any ongoing activity during suspend. Patch enables the ref count support by removing the config flag. Jira NVGPU-8506 Change-Id: Ic9389ad42be34e2357858ea79adf05f30e85efbf Signed-off-by: prsethi <prsethi@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2769479 Reviewed-by: svcacv <svcacv@nvidia.com> Reviewed-by: Deepak Goyal <dgoyal@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>