gpu: nvgpu: gk20a: Use ENOSPC instead of ENOMEM

Modify gr_gk20a_add_zbc() to return -ENOSPC instead of -ENOMEM when
all slots are already used. ENOMEM is more meant for memory allocation
failures, anyway.
This is required for porting nvgpu_gpu_zbc test case using libnvrm_gpu
APIs.

Bug 1967537
JIRA VQRM-3348

Change-Id: Ib7bcb6ba94d2ca168bcad517a8a7260fbf278a91
Signed-off-by: Mahesh Purohit <mpurohit@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1688302
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Konsta Holtta <kholtta@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>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 680b1637..65144cc5 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -3782,7 +3782,7 @@ int gr_gk20a_add_zbc(struct gk20a *g, struct gr_gk20a *gr,
         struct zbc_color_table *c_tbl;
         struct zbc_depth_table *d_tbl;
         u32 i;
-        int ret = -ENOMEM;
+        int ret = -ENOSPC;
         bool added = false;
         u32 entries;