gpu: nvgpu: return if no fecs intr

In gk20a_gr_handle_fecs_error(), if we do not see
any error interrupt from gr_fecs_host_int_status_r(),
just return immediately

Bug 1646259

Change-Id: Iea037e0dab57111d2a0fb41c5c19529b7d6c83c0
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1158591
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 339e53b2..17307b63 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -5375,6 +5375,9 @@ int gk20a_gr_handle_fecs_error(struct gk20a *g, struct channel_gk20a *ch,
 
         gk20a_dbg_fn("");
 
+        if (!gr_fecs_intr)
+                return 0;
+
         gk20a_err(dev_from_gk20a(g),
                    "unhandled fecs error interrupt 0x%08x for channel %u",
                    gr_fecs_intr, isr_data->chid);