gpu: nvgpu: add gk20a_scale_exit()

When removing the module, remove the device from devfreq and free
resources allocated when scaling is initialized.

Bug 1476801

Change-Id: I7bb0f8112a5bf7e5ce2fc56cf8af7059d910002c
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/594444
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 3d887d85..7b0db427 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1460,6 +1460,9 @@ static int __exit gk20a_remove(struct platform_device *dev)
                 cfb_remove_device(&dev->dev);
 #endif
 
+        if (IS_ENABLED(CONFIG_GK20A_DEVFREQ))
+                gk20a_scale_exit(dev);
+
         if (g->remove_support)
                 g->remove_support(dev);