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>

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index 9707870a58c9d3fd4b1c162d7d6416fc0b5df49a..86c9515018d07c72f007c1f411ba7e0401937ed5 100644 (file)
--- 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)) {