drm/nouveau/gr/gf100: Clear notify interrupt

Notify interrupt is only used for cyclestats. We can just clear it and
avoid an "unknown stat" error that gets printed to dmesg otherwise.

Signed-off-by: Lauri Peltonen <lpeltonen@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index 9707870a58c9..86c9515018d0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -1103,6 +1103,15 @@ gf100_gr_intr(struct nvkm_subdev *subdev)
         engctx = nvkm_engctx_get(engine, inst);
         chid   = pfifo->chid(pfifo, engctx);
 
+        if (stat & 0x00000001) {
+                /*
+                 * notifier interrupt, only needed for cyclestats
+                 * can be safely ignored
+                 */
+                nv_wr32(priv, 0x400100, 0x00000001);
+                stat &= ~0x00000001;
+        }
+
         if (stat & 0x00000010) {
                 handle = nvkm_handle_get_class(engctx, class);
                 if (!handle || nv_call(handle->object, mthd, data)) {