gpu: nvgpu: suppress prints in submit path

When we run out of gpfifo space or private command buffer
space, we have error spew like below :
__gk20a_channel_syncpt_incr: not enough priv cmd buffer space
gk20a_submit_channel_gpfifo: fail

Dumping these prints to UART cause increase in submit
latencies

But on these failures, we return -ENOSPC to UMD and then
UMD retries the submit, hence it might be unnecessary to dump
these prints

Hence, remove the error prints of insufficient space
and use gk20a_dbg_fn() instead of gk20a_err() to print failure
in gk20a_submit_channel_gpfifo()

Bug 200202653

Change-Id: I49efd7c6c554dd4fbfa4e66d196eb352e69f92c6
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1152378
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index f70c4bb7..a73a314c 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -2081,7 +2081,6 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
         }
 
         if (err) {
-                gk20a_err(d, "timeout waiting for gpfifo space");
                 err = -ENOSPC;
                 goto clean_up;
         }
@@ -2279,7 +2278,7 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
         return err;
 
 clean_up:
-        gk20a_err(d, "fail");
+        gk20a_dbg_fn("fail");
         free_priv_cmdbuf(c, wait_cmd);
         free_priv_cmdbuf(c, incr_cmd);
         gk20a_fence_put(pre_fence);