gpu: nvgpu: fix sparse warnings

Fix below sparse warnings :

warning: Using plain integer as NULL pointer
warning: symbol <variable/funcion> was not declared. Should it be static?
warning: Initializer entry defined twice

Also, remove dead functions

Bug 1573254

Change-Id: I29d71ecc01c841233cf6b26c9088ca8874773469
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/593363
Reviewed-by: Amit Sharma (SW-TEGRA) <amisharma@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sachin Nikam <snikam@nvidia.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
index 13e7859f..030701b9 100644
--- a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
@@ -220,7 +220,7 @@ fail:
         return ret;
 }
 
-void gm20b_vm_clear_sparse(struct vm_gk20a *vm, u64 vaddr,
+static void gm20b_vm_clear_sparse(struct vm_gk20a *vm, u64 vaddr,
                                u64 size, u32 pgsz_idx) {
         u64 vaddr_hi;
         u32 pde_lo, pde_hi, pde_i;
@@ -253,14 +253,15 @@ void gm20b_vm_clear_sparse(struct vm_gk20a *vm, u64 vaddr,
         return;
 }
 
-bool gm20b_mm_mmu_debug_mode_enabled(struct gk20a *g)
+static bool gm20b_mm_mmu_debug_mode_enabled(struct gk20a *g)
 {
         u32 debug_ctrl = gk20a_readl(g, gr_gpcs_pri_mmu_debug_ctrl_r());
         return gr_gpcs_pri_mmu_debug_ctrl_debug_v(debug_ctrl) ==
                 gr_gpcs_pri_mmu_debug_ctrl_debug_enabled_v();
 }
 
-void gm20b_mm_set_big_page_size(struct gk20a *g, void *inst_ptr, int size)
+static void gm20b_mm_set_big_page_size(struct gk20a *g,
+                                void *inst_ptr, int size)
 {
         u32 val;