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, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/mm_vgpu.c b/drivers/gpu/nvgpu/vgpu/mm_vgpu.c
index 70b50e7e..10bbbccb 100644
--- a/drivers/gpu/nvgpu/vgpu/mm_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/mm_vgpu.c
@@ -30,6 +30,9 @@ static int vgpu_init_mm_setup_sw(struct gk20a *g)
                 return 0;
         }
 
+        nvgpu_mutex_init(&mm->tlb_lock);
+        nvgpu_mutex_init(&mm->priv_lock);
+
         mm->g = g;
 
         /*TBD: make channel vm size configurable */