[PATCH 1/3] nouveau: Do not BUG_ON(!spin_is_locked()) on UP

[Bruno Prémont]

On !SMP systems spinlocks do not exist. Thus checking of they
are active will always fail.

Use
  assert_spin_locked(lock);
instead of
  BUG_ON(!spin_is_locked(lock));
to not BUG() on all UP systems.

Signed-off-by: Bruno Prémont <bonbons at linux-vserver.org>
---
See also fdo bug #87552

 drivers/gpu/drm/nouveau/core/core/event.c  | 4 ++--
 drivers/gpu/drm/nouveau/core/core/notify.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/core/core/event.c 
b/drivers/gpu/drm/nouveau/core/core/event.c
index ff2b434..760947e 100644
--- a/drivers/gpu/drm/nouveau/core/core/event.c
+++ b/drivers/gpu/drm/nouveau/core/core/event.c
@@ -26,7 +26,7 @@
 void
 nvkm_event_put(struct nvkm_event *event, u32 types, int index)
 {
-       BUG_ON(!spin_is_locked(&event->refs_lock));
+       assert_spin_locked(&event->refs_lock);
        while (types) {
                int type = __ffs(types); types &= ~(1 << type);
                if (--event->refs[index * event->types_nr + type] == 0) {
@@ -39,7 +39,7 @@ nvkm_event_put(struct nvkm_event *event, u32 types, int index)
 void
 nvkm_event_get(struct nvkm_event *event, u32 types, int index)
 {
-       BUG_ON(!spin_is_locked(&event->refs_lock));
+       assert_spin_locked(&event->refs_lock);
        while (types) {
                int type = __ffs(types); types &= ~(1 << type);
                if (++event->refs[index * event->types_nr + type] == 1) {
diff --git a/drivers/gpu/drm/nouveau/core/core/notify.c 
b/drivers/gpu/drm/nouveau/core/core/notify.c
index d1bcde5..839a325 100644
--- a/drivers/gpu/drm/nouveau/core/core/notify.c
+++ b/drivers/gpu/drm/nouveau/core/core/notify.c
@@ -98,7 +98,7 @@ nvkm_notify_send(struct nvkm_notify *notify, void *data, u32 
size)
        struct nvkm_event *event = notify->event;
        unsigned long flags;

-       BUG_ON(!spin_is_locked(&event->list_lock));
+       assert_spin_locked(&event->list_lock);
        BUG_ON(size != notify->size);

        spin_lock_irqsave(&event->refs_lock, flags);
-- 
1.8.1.5