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, 8 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
index 64bdeabb..c32142e3 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
@@ -26,7 +26,9 @@
 
 #define MAX_RUNLIST_BUFFERS     2
 
-#define FIFO_INVAL_ENGINE_ID    ~0
+#define FIFO_INVAL_ENGINE_ID    ((u32)~0)
+#define FIFO_INVAL_CHANNEL_ID   ((u32)~0)
+#define FIFO_INVAL_TSG_ID       ((u32)~0)
 
 /* generally corresponds to the "pbdma" engine */
 
@@ -96,11 +98,11 @@ struct fifo_engine_info_gk20a {
 
 struct fifo_gk20a {
         struct gk20a *g;
-        int num_channels;
-        int runlist_entry_size;
-        int num_runlist_entries;
+        unsigned int num_channels;
+        unsigned int runlist_entry_size;
+        unsigned int num_runlist_entries;
 
-        int num_pbdma;
+        unsigned int num_pbdma;
         u32 *pbdma_map;
 
         struct fifo_engine_info_gk20a *engine_info;
@@ -114,7 +116,7 @@ struct fifo_gk20a {
         struct mem_desc userd;
         u32 userd_entry_size;
 
-        int used_channels;
+        unsigned int used_channels;
         struct channel_gk20a *channel;
         /* zero-kref'd channels here */
         struct list_head free_chs;