drm/nouveau/fbcon: use fence for sync, rather than notifier
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index bce2e73..153b9a1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -153,7 +153,7 @@
struct drm_device *dev = nfbdev->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_channel *chan = dev_priv->channel;
- int ret, i;
+ int ret;
if (!chan || !chan->accel_done || in_interrupt() ||
info->state != FBINFO_STATE_RUNNING ||
@@ -163,38 +163,8 @@
if (!mutex_trylock(&chan->mutex))
return 0;
- ret = RING_SPACE(chan, 4);
- if (ret) {
- mutex_unlock(&chan->mutex);
- nouveau_fbcon_gpu_lockup(info);
- return 0;
- }
-
- if (dev_priv->card_type >= NV_C0) {
- BEGIN_NVC0(chan, NvSub2D, 0x010c, 1);
- OUT_RING (chan, 0);
- BEGIN_NVC0(chan, NvSub2D, 0x0100, 1);
- OUT_RING (chan, 0);
- } else {
- BEGIN_NV04(chan, 0, 0x0104, 1);
- OUT_RING (chan, 0);
- BEGIN_NV04(chan, 0, 0x0100, 1);
- OUT_RING (chan, 0);
- }
-
- nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
- FIRE_RING(chan);
+ ret = nouveau_channel_idle(chan);
mutex_unlock(&chan->mutex);
-
- ret = -EBUSY;
- for (i = 0; i < 100000; i++) {
- if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
- ret = 0;
- break;
- }
- DRM_UDELAY(1);
- }
-
if (ret) {
nouveau_fbcon_gpu_lockup(info);
return 0;