gpu: nvgpu: gk20a: disable devfreq before gk20a

Ensure devfreq is disabled before shutting down gk20a, to prevent
possible races with reading of gpu load, and the shutdown of gpu itself.

Bug 1492913

Change-Id: I016fdba9515120fc6cf3e771f60c61b9bf2027cb
Signed-off-by: Prashant Malani <pmalani@nvidia.com>
Reviewed-on: http://git-master/r/394296
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 853b6a3c..7e2b9afb 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1227,12 +1227,12 @@ static int gk20a_pm_suspend(struct device *dev)
         if (atomic_read(&dev->power.usage_count) > 1)
                 return -EBUSY;
 
+        gk20a_scale_suspend(to_platform_device(dev));
+
         ret = gk20a_pm_prepare_poweroff(dev);
         if (ret)
                 return ret;
 
-        gk20a_scale_suspend(to_platform_device(dev));
-
         if (platform->suspend)
                 platform->suspend(dev);