drm/nve4/graph: do not crash if no power device present

Detect and workaround the absence of a power device so chips that do not
feature one (e.g. GK20A) can still use this driver.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Alexandre Courbot 2014-07-15 10:36:11 +09:00 committed by Ben Skeggs
parent ec1afbf4e1
commit 25856c0b04

View File

@ -203,7 +203,8 @@ nve4_graph_init(struct nouveau_object *object)
int gpc, tpc, rop;
int ret, i;
ppwr->pgob(ppwr, false);
if (ppwr)
ppwr->pgob(ppwr, false);
ret = nouveau_graph_init(&priv->base);
if (ret)