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/common/nvgpu_common.c b/drivers/gpu/nvgpu/common/nvgpu_common.c
index 6b5cfa55..521ccd9d 100644
--- a/drivers/gpu/nvgpu/common/nvgpu_common.c
+++ b/drivers/gpu/nvgpu/common/nvgpu_common.c
@@ -110,6 +110,9 @@ static void nvgpu_init_mm_vars(struct gk20a *g)
         g->mm.bypass_smmu = platform->bypass_smmu;
         g->mm.disable_bigpage = platform->disable_bigpage;
         g->mm.vidmem_is_vidmem = platform->vidmem_is_vidmem;
+
+        nvgpu_mutex_init(&g->mm.tlb_lock);
+        nvgpu_mutex_init(&g->mm.priv_lock);
 }
 
 int nvgpu_probe(struct gk20a *g,