drm: Remove infrastructure for supporting i915's vblank swapping.

It's not used in any other drivers, and doesn't look like it will be from
drm.git master.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 141e33004a7..66c96ec6667 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -92,7 +92,6 @@ static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
 
         spin_lock_init(&dev->count_lock);
         spin_lock_init(&dev->drw_lock);
-        spin_lock_init(&dev->tasklet_lock);
         spin_lock_init(&dev->lock.spinlock);
         init_timer(&dev->timer);
         mutex_init(&dev->struct_mutex);