gpu: nvgpu: improve error print in check_gp_put()

Improve error print in check_gp_put() and dump put
pointer stored in channel's gpfifo structure and
the put pointer that we read from memory

Bug 200089835

Change-Id: I7e854398811330a43d9d9bf86bf29c5986ab22b7
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/722536
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index ec75b50e..dc44d4b1 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -1178,7 +1178,8 @@ static inline bool check_gp_put(struct gk20a *g,
         if (c->gpfifo.put != put) {
                 /*TBD: BUG_ON/teardown on this*/
                 gk20a_err(dev_from_gk20a(g), "gp_put changed unexpectedly "
-                           "since last update");
+                          "since last update, channel put = %u, ram put = %u\n",
+                          c->gpfifo.put, put);
                 c->gpfifo.put = put;
                 return false; /* surprise! */
         }