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, 4 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
index 011c980e..10f1213b 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
@@ -204,11 +204,8 @@ static int __gk20a_channel_syncpt_incr(struct gk20a_channel_sync *s,
                 incr_cmd_size += 2;
 
         err = gk20a_channel_alloc_priv_cmdbuf(c, incr_cmd_size, &incr_cmd);
-        if (err) {
-                gk20a_err(dev_from_gk20a(c->g),
-                                "not enough priv cmd buffer space");
+        if (err)
                 return err;
-        }
 
         off = incr_cmd->off;