drm/nv50/pm: add support for pwm fan control

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index 607e4965f4ff..ee2872ed60ee 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -167,8 +167,11 @@ nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
                 }
         }
 
-        if (pm->fanspeed_get)
-                perflvl->fanspeed = pm->fanspeed_get(dev);
+        if (pm->fanspeed_get) {
+                ret = pm->fanspeed_get(dev);
+                if (ret > 0)
+                        perflvl->fanspeed = ret;
+        }
 
         return 0;
 }