Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 - some small fixes for msm and exynos
 - a regression revert affecting nouveau users with old userspace
 - intel pageflip deadlock and gpu hang fixes, hsw modesetting hangs

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
  Revert "drm: mark context support as a legacy subsystem"
  drm/i915: Don't enable the cursor on a disable pipe
  drm/i915: do not update cursor in crtc mode set
  drm/exynos: fix return value check in lowlevel_buffer_allocate()
  drm/exynos: Fix address space warnings in exynos_drm_fbdev.c
  drm/exynos: Fix address space warning in exynos_drm_buf.c
  drm/exynos: Remove redundant OF dependency
  drm/msm: drop unnecessary set_need_resched()
  drm/i915: kill set_need_resched
  drm/msm: fix potential NULL pointer dereference
  drm/i915/dvo: set crtc timings again for panel fixed modes
  drm/i915/sdvo: Robustify the dtd<->drm_mode conversions
  drm/msm: workaround for missing irq
  drm/msm: return -EBUSY if bo still active
  drm/msm: fix return value check in ERR_PTR()
  drm/msm: fix cmdstream size check
  drm/msm: hangcheck harder
  drm/msm: handle read vs write fences
  drm/i915/sdvo: Fully translate sync flags in the dtd->mode conversion
  drm/i915: Use proper print format for debug prints
  ...

23 files changed, 276 insertions, 197 deletions

diff --git a/drivers/gpu/drm/drm_context.c b/drivers/gpu/drm/drm_context.c
index b4fb86d89850..224ff965bcf7 100644
--- a/drivers/gpu/drm/drm_context.c
+++ b/drivers/gpu/drm/drm_context.c
@@ -42,6 +42,10 @@
 
 #include <drm/drmP.h>
 
+/******************************************************************/
+/** \name Context bitmap support */
+/*@{*/
+
 /**
  * Free a handle from the context bitmap.
  *
@@ -52,48 +56,13 @@
  * in drm_device::ctx_idr, while holding the drm_device::struct_mutex
  * lock.
  */
-static void drm_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
+void drm_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
 {
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return;
-
         mutex_lock(&dev->struct_mutex);
         idr_remove(&dev->ctx_idr, ctx_handle);
         mutex_unlock(&dev->struct_mutex);
 }
 
-/******************************************************************/
-/** \name Context bitmap support */
-/*@{*/
-
-void drm_legacy_ctxbitmap_release(struct drm_device *dev,
-                                  struct drm_file *file_priv)
-{
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return;
-
-        mutex_lock(&dev->ctxlist_mutex);
-        if (!list_empty(&dev->ctxlist)) {
-                struct drm_ctx_list *pos, *n;
-
-                list_for_each_entry_safe(pos, n, &dev->ctxlist, head) {
-                        if (pos->tag == file_priv &&
-                            pos->handle != DRM_KERNEL_CONTEXT) {
-                                if (dev->driver->context_dtor)
-                                        dev->driver->context_dtor(dev,
-                                                                  pos->handle);
-
-                                drm_ctxbitmap_free(dev, pos->handle);
-
-                                list_del(&pos->head);
-                                kfree(pos);
-                                --dev->ctx_count;
-                        }
-                }
-        }
-        mutex_unlock(&dev->ctxlist_mutex);
-}
-
 /**
  * Context bitmap allocation.
  *
@@ -121,12 +90,10 @@ static int drm_ctxbitmap_next(struct drm_device * dev)
  *
  * Initialise the drm_device::ctx_idr
  */
-void drm_legacy_ctxbitmap_init(struct drm_device * dev)
+int drm_ctxbitmap_init(struct drm_device * dev)
 {
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return;
-
         idr_init(&dev->ctx_idr);
+        return 0;
 }
 
 /**
@@ -137,7 +104,7 @@ void drm_legacy_ctxbitmap_init(struct drm_device * dev)
  * Free all idr members using drm_ctx_sarea_free helper function
  * while holding the drm_device::struct_mutex lock.
  */
-void drm_legacy_ctxbitmap_cleanup(struct drm_device * dev)
+void drm_ctxbitmap_cleanup(struct drm_device * dev)
 {
         mutex_lock(&dev->struct_mutex);
         idr_destroy(&dev->ctx_idr);
@@ -169,9 +136,6 @@ int drm_getsareactx(struct drm_device *dev, void *data,
         struct drm_local_map *map;
         struct drm_map_list *_entry;
 
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return -EINVAL;
-
         mutex_lock(&dev->struct_mutex);
 
         map = idr_find(&dev->ctx_idr, request->ctx_id);
@@ -216,9 +180,6 @@ int drm_setsareactx(struct drm_device *dev, void *data,
         struct drm_local_map *map = NULL;
         struct drm_map_list *r_list = NULL;
 
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return -EINVAL;
-
         mutex_lock(&dev->struct_mutex);
         list_for_each_entry(r_list, &dev->maplist, head) {
                 if (r_list->map
@@ -319,9 +280,6 @@ int drm_resctx(struct drm_device *dev, void *data,
         struct drm_ctx ctx;
         int i;
 
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return -EINVAL;
-
         if (res->count >= DRM_RESERVED_CONTEXTS) {
                 memset(&ctx, 0, sizeof(ctx));
                 for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
@@ -352,9 +310,6 @@ int drm_addctx(struct drm_device *dev, void *data,
         struct drm_ctx_list *ctx_entry;
         struct drm_ctx *ctx = data;
 
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return -EINVAL;
-
         ctx->handle = drm_ctxbitmap_next(dev);
         if (ctx->handle == DRM_KERNEL_CONTEXT) {
                 /* Skip kernel's context and get a new one. */
@@ -398,9 +353,6 @@ int drm_getctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
         struct drm_ctx *ctx = data;
 
-        if (drm_core_check_feature(dev, DRIVER_MODESET))
-                return -EINVAL;
-
         /* This is 0, because we don't handle any context flags */
         ctx->flags = 0;
 
@@ -423,9 +375,6 @@ int drm_switchctx(struct drm_device *dev, void *data,
 {
         struct drm_ctx *ctx = data;