drm/nouveau: hide sysfs pstate file behind an option again

No-one has yet had time to move this to debugfs as discussed during
the last merge window.  Until this happens, hide the option to make
it clear it's not going to be here forever.

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

diff --git a/drivers/gpu/drm/nouveau/nouveau_sysfs.c b/drivers/gpu/drm/nouveau/nouveau_sysfs.c
index 32a23895abd5f52fe3cd2bcff82f91757daf6be7..3c6962d15b26c2099bc4f2e1d840f5377b809227 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_sysfs.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sysfs.c
@@ -28,6 +28,10 @@
 
 #include "nouveau_sysfs.h"
 
+MODULE_PARM_DESC(pstate, "enable sysfs pstate file, which will be moved in the future");
+static int nouveau_pstate;
+module_param_named(pstate, nouveau_pstate, int, 0400);
+
 static inline struct drm_device *
 drm_device(struct device *d)
 {
@@ -160,7 +164,7 @@ nouveau_sysfs_fini(struct drm_device *dev)
        struct nouveau_drm *drm = nouveau_drm(dev);
        struct nvif_device *device = &drm->device;
 
-       if (sysfs->ctrl.priv) {
+       if (sysfs && sysfs->ctrl.priv) {
                device_remove_file(nv_device_base(nvkm_device(device)), &dev_attr_pstate);
                nvif_object_fini(&sysfs->ctrl);
        }
@@ -177,6 +181,9 @@ nouveau_sysfs_init(struct drm_device *dev)
        struct nouveau_sysfs *sysfs;
        int ret;
 
+       if (!nouveau_pstate)
+               return 0;
+
        sysfs = drm->sysfs = kzalloc(sizeof(*sysfs), GFP_KERNEL);
        if (!sysfs)
                return -ENOMEM;