drm/nouveau/disp: clear notify intr status when enabling, to prevent races

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
index 6e7deeababd2..44a8290aaea5 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -88,12 +88,14 @@ nv50_disp_chan_uevent_fini(struct nvkm_event *event, int type, int index)
 {
         struct nv50_disp_priv *priv = container_of(event, typeof(*priv), uevent);
         nv_mask(priv, 0x610028, 0x00000001 << index, 0x00000000 << index);
+        nv_wr32(priv, 0x610020, 0x00000001 << index);
 }
 
 static void
 nv50_disp_chan_uevent_init(struct nvkm_event *event, int types, int index)
 {
         struct nv50_disp_priv *priv = container_of(event, typeof(*priv), uevent);
+        nv_wr32(priv, 0x610020, 0x00000001 << index);
         nv_mask(priv, 0x610028, 0x00000001 << index, 0x00000001 << index);
 }
 
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
index f3120b70b681..181a2d57e356 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
@@ -51,12 +51,14 @@ nvd0_disp_chan_uevent_fini(struct nvkm_event *event, int type, int index)
 {
         struct nv50_disp_priv *priv = container_of(event, typeof(*priv), uevent);
         nv_mask(priv, 0x610090, 0x00000001 << index, 0x00000000 << index);
+        nv_wr32(priv, 0x61008c, 0x00000001 << index);
 }
 
 static void
 nvd0_disp_chan_uevent_init(struct nvkm_event *event, int types, int index)
 {
         struct nv50_disp_priv *priv = container_of(event, typeof(*priv), uevent);
+        nv_wr32(priv, 0x61008c, 0x00000001 << index);
         nv_mask(priv, 0x610090, 0x00000001 << index, 0x00000001 << index);
 }