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>

5 files changed, 6 insertions, 6 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;
diff --git a/drivers/gpu/nvgpu/gp106/clk_gp106.c b/drivers/gpu/nvgpu/gp106/clk_gp106.c
index 1dd3922a..39c308a3 100644
--- a/drivers/gpu/nvgpu/gp106/clk_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/clk_gp106.c
@@ -195,7 +195,7 @@ static int clk_gp106_debugfs_init(struct gk20a *g) {
         struct dentry *gpu_root = platform->debugfs;
         struct dentry *clocks_root;
         struct dentry *d;
-        int i;
+        unsigned int i;
 
         if (NULL == (clocks_root = debugfs_create_dir("clocks", gpu_root)))
                 return -ENOMEM;
diff --git a/drivers/gpu/nvgpu/gp10b/fb_gp10b.c b/drivers/gpu/nvgpu/gp10b/fb_gp10b.c
index 9c0bc992..5324b5ef 100644
--- a/drivers/gpu/nvgpu/gp10b/fb_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/fb_gp10b.c
@@ -87,12 +87,12 @@ static void gp10b_init_kind_attr(void)
         }
 }
 
-static int gp10b_fb_compression_page_size(struct gk20a *g)
+static unsigned int gp10b_fb_compression_page_size(struct gk20a *g)
 {
         return SZ_64K;
 }
 
-static int gp10b_fb_compressible_page_size(struct gk20a *g)
+static unsigned int gp10b_fb_compressible_page_size(struct gk20a *g)
 {
         return SZ_4K;
 }
diff --git a/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
index 3e64d435..31c79aff 100644
--- a/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
@@ -124,7 +124,7 @@ static int gp10b_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr)
 static void gp10b_ltc_isr(struct gk20a *g)
 {
         u32 mc_intr, ltc_intr;
-        int ltc, slice;
+        unsigned int ltc, slice;
         u32 ltc_stride = nvgpu_get_litter_value(g, GPU_LIT_LTC_STRIDE);
         u32 lts_stride = nvgpu_get_litter_value(g, GPU_LIT_LTS_STRIDE);
 
diff --git a/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c b/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
index db4f14dd..8cf6d5e8 100644
--- a/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
+++ b/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
@@ -62,7 +62,7 @@ static void gr_gp10b_remove_sysfs(struct device *dev);
 static int gp10b_tegra_get_clocks(struct device *dev)
 {
         struct gk20a_platform *platform = dev_get_drvdata(dev);
-        int i;
+        unsigned int i;
 
         if (platform->is_fmodel)
                 return 0;