gpu: nvgpu: Remove IOCTL FREE_OBJ_CTX

We have never used the IOCTL FREE_OBJ_CTX. Using it leads to context
being only partially available, and can lead to use-after-free.

Bug 1834225

Change-Id: I9d2b632ab79760f8186d02e0f35861b3a6aae649
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1250004
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 7699cd53..07752d66 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -196,8 +196,6 @@ struct gpu_ops {
                 void (*free_channel_ctx)(struct channel_gk20a *c);
                 int (*alloc_obj_ctx)(struct channel_gk20a  *c,
                                 struct nvgpu_alloc_obj_ctx_args *args);
-                int (*free_obj_ctx)(struct channel_gk20a  *c,
-                                struct nvgpu_free_obj_ctx_args *args);
                 int (*bind_ctxsw_zcull)(struct gk20a *g, struct gr_gk20a *gr,
                                 struct channel_gk20a *c, u64 zcull_va,
                                 u32 mode);