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, 4 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
index bfa3902e..193938ba 100644
--- a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
@@ -2709,7 +2709,7 @@ static bool pmu_queue_has_room(struct pmu_gk20a *pmu,
 {
         u32 head, tail;
         bool rewind = false;
-        int free;
+        unsigned int free;
 
         size = ALIGN(size, QUEUE_ALIGNMENT);
 
@@ -2955,7 +2955,8 @@ static int gk20a_init_pmu_setup_sw(struct gk20a *g)
         struct mm_gk20a *mm = &g->mm;
         struct vm_gk20a *vm = &mm->pmu.vm;
         struct device *d = dev_from_gk20a(g);
-        int i, err = 0;
+        unsigned int i;
+        int err = 0;
         u8 *ptr;
 
         gk20a_dbg_fn("");
@@ -4128,7 +4129,7 @@ static void pmu_dump_elpg_stats(struct pmu_gk20a *pmu)
 void pmu_dump_falcon_stats(struct pmu_gk20a *pmu)
 {
         struct gk20a *g = gk20a_from_pmu(pmu);
-        int i;
+        unsigned int i;
 
         gk20a_err(dev_from_gk20a(g), "pwr_falcon_os_r : %d",
                 gk20a_readl(g, pwr_falcon_os_r()));