gpu: nvgpu: remove use of DEFINE_MUTEX()

API DEFINE_MUTEX() is defined in Linux and might
not be available in other OSs.
Hence remove its usage from nvgpu

Declare and explicitly initialize below mutexes
for both nvgpu and vgpu
g->mm.priv_lock
g->mm.tlb_lock

Jira NVGPU-13

Change-Id: If72885a6da0227a1552303206172f1f2b751471d
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1298042
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index 5f29c9e7..d7f6cb9a 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -361,6 +361,8 @@ struct mm_gk20a {
         } ce;
 
         struct nvgpu_mutex l2_op_lock;
+        struct nvgpu_mutex tlb_lock;
+        struct nvgpu_mutex priv_lock;
 #ifdef CONFIG_ARCH_TEGRA_18x_SOC
         struct mem_desc bar2_desc;
 #endif