From 3a405258b2baa71e8f042f0b55392d40e3f99f3e Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Sun, 24 Aug 2014 23:15:11 +0200 Subject: [PATCH] drm/nouveau/therm/nv84+: do not expose non-calibrated internal temp sensor Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/nv84.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv84.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv84.c index 38b16d92f420..14e2e09bfc24 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv84.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv84.c @@ -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 -- 2.39.5