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, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c b/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c
index 3b877db1..bb38a6f1 100644
--- a/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c
@@ -80,7 +80,7 @@ static void gm20b_fifo_trigger_mmu_fault(struct gk20a *g,
                 } else {
                         u32 mmu_id = gm20b_engine_id_to_mmu_id(g,
                                                                 engine_id);
-                        if (mmu_id != ~0)
+                        if (mmu_id != (u32)~0)
                                 gk20a_writel(g, fifo_trigger_mmu_fault_r(mmu_id),
                                              fifo_trigger_mmu_fault_enable_f(1));
                 }