drm/nouveau/therm/nv84+: do not expose non-calibrated internal temp sensor
authorMartin Peres <martin.peres@free.fr>
Sun, 24 Aug 2014 21:15:11 +0000 (23:15 +0200)
committerBen Skeggs <bskeggs@redhat.com>
Mon, 15 Sep 2014 12:25:02 +0000 (22:25 +1000)
Signed-off-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
drivers/gpu/drm/nouveau/core/subdev/therm/nv84.c

index 38b16d92f420708559368fc9b4dabcba42533928..14e2e09bfc24ce8ae8cf05b554a7eae637d82f44 100644 (file)
@@ -33,7 +33,12 @@ struct nv84_therm_priv {
 int
 nv84_temp_get(struct nouveau_therm *therm)
 {
-       return nv_rd32(therm, 0x20400);
+       struct nouveau_fuse *fuse = nouveau_fuse(therm);
+
+       if (nv_ro32(fuse, 0x1a8) == 1)
+               return nv_rd32(therm, 0x20400);
+       else
+               return -ENODEV;
 }
 
 void