gpu: nvgpu: Use 64-bit math for cacheline offset

Cast cacheline_start to u64 to use 64-bit maths for cacheline offset.

Coverity ID 24250

Change-Id: Ic10c92ebb737bd39486a83e4de53cc1191193667
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1172053

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 9299266f..e0b9a720 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -2205,7 +2205,7 @@ int gk20a_vm_map_compbits(struct vm_gk20a *vm,
                 cacheline_start = mapped_buffer->ctag_offset /
                         g->gr.comptags_per_cacheline;
                 cacheline_offset_start =
-                        cacheline_start * aggregate_cacheline_sz;
+                        (u64)cacheline_start * aggregate_cacheline_sz;
 
                 if (fixed_mapping) {
                         struct buffer_attrs bfr;