gpu: nvgpu: Enable signed versus non-signed errors

Fix a few trivial signed versus unsigned problems, and enable
compilation flag to treat them as errors.

Change-Id: I68cc327885ef1efb12db7f347a2699a65415f889
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1265291
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/clk_gk20a.c b/drivers/gpu/nvgpu/gk20a/clk_gk20a.c
index e3a486b6..2c4f1bf4 100644
--- a/drivers/gpu/nvgpu/gk20a/clk_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/clk_gk20a.c
@@ -67,7 +67,7 @@ static int clk_config_pll(struct clk_gk20a *clk, struct pll *pll,
         u32 target_vco_f, vco_f;
         u32 ref_clk_f, target_clk_f, u_f;
         u32 delta, lwv, best_delta = ~0;
-        int pl;
+        unsigned int pl;
 
         BUG_ON(target_freq == NULL);
 
@@ -160,7 +160,7 @@ static int clk_config_pll(struct clk_gk20a *clk, struct pll *pll,
         }
 
 found_match:
-        BUG_ON(best_delta == ~0);
+        BUG_ON(best_delta == ~0U);
 
         if (best_fit && best_delta != 0)
                 gk20a_dbg_clk("no best match for target @ %dMHz on gpc_pll",