gpu: nvgpu: Fix signed comparison bugs

Fix small problems related to signed versus unsigned comparisons
throughout the driver. Bump up the warning level to prevent such
problems from occuring in future.

Change-Id: I8ff5efb419f664e8a2aedadd6515ae4d18502ae0
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1252068
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.h b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
index d03f945c..662d9a87 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
@@ -334,8 +334,8 @@ struct gr_gk20a {
         s32 max_default_color_index;
         s32 max_default_depth_index;
 
-        s32 max_used_color_index;
-        s32 max_used_depth_index;
+        u32 max_used_color_index;
+        u32 max_used_depth_index;
 
 #define GR_CHANNEL_MAP_TLB_SIZE         2 /* must of power of 2 */
         struct gr_channel_map_tlb_entry chid_tlb[GR_CHANNEL_MAP_TLB_SIZE];