gpu: nvgpu: remove unnecessary nvgpu_memset calls

Some graphics context buffers are explicitly cleared to zero after
allocation. That's not necessary because the allocator gives
zero-initialized memory already, so remove the clears.

Change-Id: I8f9913605801e35082762e7743762d97f88e1d12
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1761578
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2 files changed, 0 insertions, 5 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index b218397a..d787a693 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -1763,9 +1763,6 @@ int gr_gk20a_update_hwpm_ctxsw_mode(struct gk20a *g,
                                 return -ENOMEM;
                         }
                 }
-
-                /* Now clear the buffer */
-                nvgpu_memset(g, &pm_ctx->mem, 0, 0, pm_ctx->mem.size);
         }
 
         data = nvgpu_mem_rd(g, gr_mem, ctxsw_prog_main_image_pm_o());
diff --git a/drivers/gpu/nvgpu/gv11b/subctx_gv11b.c b/drivers/gpu/nvgpu/gv11b/subctx_gv11b.c
index 4f8de196..b0bcb585 100644
--- a/drivers/gpu/nvgpu/gv11b/subctx_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/subctx_gv11b.c
@@ -79,8 +79,6 @@ int gv11b_alloc_subctx_header(struct channel_gk20a *c)
                         nvgpu_dma_free(g, &ctx->mem);
                         return -ENOMEM;
                 }
-                /* Now clear the buffer */
-                nvgpu_memset(g, &ctx->mem, 0, 0, ctx->mem.size);
         }
         return ret;
 }