drm/nouveau: remove cpu_writers lock

No other driver uses this, and userspace should be responsible for handling
locking between them if they share BOs.

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

1 files changed, 0 insertions, 1 deletions

diff --git a/include/drm/nouveau_drm.h b/include/drm/nouveau_drm.h
index bc5590b1a1ac..60a7b3e9c2e9 100644
--- a/include/drm/nouveau_drm.h
+++ b/include/drm/nouveau_drm.h
@@ -171,7 +171,6 @@ struct drm_nouveau_gem_pushbuf {
 };
 
 #define NOUVEAU_GEM_CPU_PREP_NOWAIT                                  0x00000001
-#define NOUVEAU_GEM_CPU_PREP_NOBLOCK                                 0x00000002
 #define NOUVEAU_GEM_CPU_PREP_WRITE                                   0x00000004
 struct drm_nouveau_gem_cpu_prep {
         uint32_t handle;