From: Ben Skeggs Date: Wed, 3 Dec 2014 08:19:58 +0000 (+1000) Subject: drm/gf100-/bar: don't fill in bar->alloc until after all vm setup done X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8d90d1ef88ddad5353888e9ecf1d30c75a5effff;p=linux-beck.git 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 --- 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;