drm: kill context_ctor callback

It's not used by any driver. The destructor callback is unfortunately
used by the via driver in a rather convoluted piece of code used
to reimplement something resembling broken futexes. I didn't dare
to touch this code. But at least kill the needless NULL assignemt
in the sis driver.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

2 files changed, 0 insertions, 9 deletions

diff --git a/drivers/gpu/drm/drm_context.c b/drivers/gpu/drm/drm_context.c
index 2607753a320b..6d440fb894cf 100644
--- a/drivers/gpu/drm/drm_context.c
+++ b/drivers/gpu/drm/drm_context.c
@@ -333,14 +333,6 @@ int drm_addctx(struct drm_device *dev, void *data,
                 return -ENOMEM;
         }
 
-        if (ctx->handle != DRM_KERNEL_CONTEXT) {
-                if (dev->driver->context_ctor)
-                        if (!dev->driver->context_ctor(dev, ctx->handle)) {
-                                DRM_DEBUG("Running out of ctxs or memory.\n");
-                                return -ENOMEM;
-                        }
-        }
-
         ctx_entry = kmalloc(sizeof(*ctx_entry), GFP_KERNEL);
         if (!ctx_entry) {
                 DRM_DEBUG("out of memory\n");
diff --git a/drivers/gpu/drm/sis/sis_drv.c b/drivers/gpu/drm/sis/sis_drv.c
index 776bf9e9ea1a..2d1292131500 100644
--- a/drivers/gpu/drm/sis/sis_drv.c
+++ b/drivers/gpu/drm/sis/sis_drv.c
@@ -67,7 +67,6 @@ static struct drm_driver driver = {
         .driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR,
         .load = sis_driver_load,
         .unload = sis_driver_unload,
-        .context_dtor = NULL,
         .dma_quiescent = sis_idle,
         .reclaim_buffers = NULL,
         .reclaim_buffers_idlelocked = sis_reclaim_buffers_locked,