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: Ib7026728ef0e8c3c9e68956fc9794ec3a786a8a2
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1252069
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk_mclk.c b/drivers/gpu/nvgpu/clk/clk_mclk.c
index 7b15767b..ea238c15 100644
--- a/drivers/gpu/nvgpu/clk/clk_mclk.c
+++ b/drivers/gpu/nvgpu/clk/clk_mclk.c
@@ -2347,7 +2347,7 @@ int clk_mclkseq_change_mclk_gddr5(struct gk20a *g, enum gk20a_mclk_speed speed)
                 mclk->switch_std = 0;
         } else {
                 s64 prev_avg;
-                u64 curr = (t1-t0)/1000;
+                s64 curr = (t1-t0)/1000;
 
                 mclk->switch_max = curr > mclk->switch_max ?
                         curr : mclk->switch_max;