From 8d90d1ef88ddad5353888e9ecf1d30c75a5effff Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 3 Dec 2014 18:19:58 +1000 Subject: [PATCH] drm/gf100-/bar: don't fill in bar->alloc until after all vm setup done gpuobj has a condition of (bar && bar->alloc) around usage to avoid some nasty ordering issues (which, i've now been reminded to add a todo about fixing...) between bar and vm. The bar->alloc part of the condition isn't currently necessary (it used to be, another change made bar always NULL where it matters), so we got lucky. That won't be the case for much longer. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/bar/nvc0.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/bar/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/bar/nvc0.c index 05a278bab247..8320ee0509c3 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/bar/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/bar/nvc0.c @@ -153,8 +153,6 @@ nvc0_bar_ctor(struct nouveau_object *parent, struct nouveau_object *engine, ret = nvc0_bar_init_vm(priv, &priv->bar[0], 3); if (ret) return ret; - priv->base.alloc = nouveau_bar_alloc; - priv->base.kmap = nvc0_bar_kmap; } /* BAR1 */ @@ -162,6 +160,10 @@ nvc0_bar_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (ret) return ret; + if (has_bar3) { + priv->base.alloc = nouveau_bar_alloc; + priv->base.kmap = nvc0_bar_kmap; + } priv->base.umap = nvc0_bar_umap; priv->base.unmap = nvc0_bar_unmap; priv->base.flush = nv84_bar_flush; -- 2.20.1