gpu: nvgpu: Disallow use of bare channels

All channels need to now be wrapped in TSGs. Disallow use of bare
channels by preventing creation of GPFIFO for them.

Bug 1842197

Change-Id: Id0ebee4c590804b96c09f8951e35ba2680b596e7
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1612697
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/cde.c b/drivers/gpu/nvgpu/common/linux/cde.c
index b48c498d..f6b43113 100644
--- a/drivers/gpu/nvgpu/common/linux/cde.c
+++ b/drivers/gpu/nvgpu/common/linux/cde.c
@@ -1294,7 +1294,8 @@ static int gk20a_cde_load(struct gk20a_cde_ctx *cde_ctx)
         }
 
         /* allocate gpfifo (1024 should be more than enough) */
-        err = gk20a_channel_alloc_gpfifo(ch, 1024, 0, 0);
+        err = gk20a_channel_alloc_gpfifo(ch, 1024, 0,
+                        NVGPU_GPFIFO_FLAGS_ALLOW_BARE_CHANNEL);
         if (err) {
                 nvgpu_warn(g, "cde: unable to allocate gpfifo");
                 goto err_alloc_gpfifo;