gpu: nvgpu: fix compilation issues

compiling kernel with clang pointed out below issues in nvgpu.
Fixing them.

gr_gk20a.c:1185:12: error: stack frame size of 3152 bytes in
function 'gr_gk20a_setup_alpha_beta_tables'

cde_gk20a.c:1376:22: error: duplicate 'const' declaration
cde_gk20a.c:1377:22: error: duplicate 'const' declaration
cde_gk20a.c:1378:22: error: duplicate 'const' declaration

ctxsw_trace_gk20a.c:71:19: error: unused function 'ring_space'

platform_gk20a_tegra.c:55:19: error: unused function 'pmc_read'
platform_gk20a_tegra.c:60:20: error: unused function 'pmc_write'

bug 1745660

Change-Id: I8cd4383cb898307bbeb162ca00b3e20d04de2c90
Signed-off-by: Sri Krishna chowdary <schowdary@nvidia.com>
Reviewed-on: http://git-master/r/1150486
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 60247da8..a5caf048 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -1203,15 +1203,18 @@ static int gr_gk20a_setup_alpha_beta_tables(struct gk20a *g,
         u32 reg_offset;
         bool assign_alpha;
 
-        u32 map_alpha[gr_pd_alpha_ratio_table__size_1_v()];
-        u32 map_beta[gr_pd_alpha_ratio_table__size_1_v()];
-        u32 map_reg_used[gr_pd_alpha_ratio_table__size_1_v()];
+        u32 *map_alpha;
+        u32 *map_beta;
+        u32 *map_reg_used;
 
         gk20a_dbg_fn("");
 
-        memset(map_alpha, 0, gr_pd_alpha_ratio_table__size_1_v() * sizeof(u32));
-        memset(map_beta, 0, gr_pd_alpha_ratio_table__size_1_v() * sizeof(u32));
-        memset(map_reg_used, 0, gr_pd_alpha_ratio_table__size_1_v() * sizeof(u32));
+        map_alpha = kzalloc(3 * gr_pd_alpha_ratio_table__size_1_v() *
+                                sizeof(u32), GFP_KERNEL);
+        if (!map_alpha)
+                return -ENOMEM;
+        map_beta = map_alpha + gr_pd_alpha_ratio_table__size_1_v();
+        map_reg_used = map_beta + gr_pd_alpha_ratio_table__size_1_v();
 
         for (row = 0; row < rows; ++row) {
                 alpha_target = max_t(u32, gr->tpc_count * row / rows, 1);
@@ -1277,6 +1280,7 @@ static int gr_gk20a_setup_alpha_beta_tables(struct gk20a *g,
                 }
         }
 
+        kfree(map_alpha);
         return 0;
 }