gpu: nvgpu: Add wrapper over atomic_t and atomic64_t

- added wrapper structs nvgpu_atomic_t and nvgpu_atomic64_t over
  atomic_t and atomic64_t
- added nvgpu_atomic_* and nvgpu_atomic64_* APIs to access the above
  wrappers.

JIRA NVGPU-121

Change-Id: I61667bb0a84c2fc475365abb79bffb42b8b4786a
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1533044
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/module.c b/drivers/gpu/nvgpu/common/linux/module.c
index bfbe7a58..f5c6ca1f 100644
--- a/drivers/gpu/nvgpu/common/linux/module.c
+++ b/drivers/gpu/nvgpu/common/linux/module.c
@@ -68,13 +68,13 @@ int gk20a_busy(struct gk20a *g)
         if (!g)
                 return -ENODEV;
 
-        atomic_inc(&g->usage_count);
+        atomic_inc(&g->usage_count.atomic_var);
 
         down_read(&g->busy_lock);
 
         if (!gk20a_can_busy(g)) {
                 ret = -ENODEV;
-                atomic_dec(&g->usage_count);
+                atomic_dec(&g->usage_count.atomic_var);
                 goto fail;
         }
 
@@ -87,7 +87,7 @@ int gk20a_busy(struct gk20a *g)
                         /* Mark suspended so runtime pm will retry later */
                         pm_runtime_set_suspended(dev);
                         pm_runtime_put_noidle(dev);
-                        atomic_dec(&g->usage_count);
+                        atomic_dec(&g->usage_count.atomic_var);
                         goto fail;
                 }
         } else {
@@ -97,7 +97,7 @@ int gk20a_busy(struct gk20a *g)
                                 vgpu_pm_finalize_poweron(dev)
                                 : gk20a_pm_finalize_poweron(dev);
                         if (ret) {
-                                atomic_dec(&g->usage_count);
+                                atomic_dec(&g->usage_count.atomic_var);
                                 nvgpu_mutex_release(&g->poweron_lock);
                                 goto fail;
                         }
@@ -120,7 +120,7 @@ void gk20a_idle(struct gk20a *g)
 {
         struct device *dev;
 
-        atomic_dec(&g->usage_count);
+        atomic_dec(&g->usage_count.atomic_var);
 
         dev = dev_from_gk20a(g);