Merge tag 'topic/drm-misc-2015-10-19' of git://anongit.freedesktop.org/drm-intel into drm-next

More drm-misc for 4.4.
- fb refcount fix in atomic fbdev
- various locking reworks to reduce drm_global_mutex and dev->struct_mutex
- rename docbook to gpu.tmpl and include vga_switcheroo stuff, plus more
  vga_switcheroo (Lukas Wunner)
- viewport check fixes for atomic drivers from Ville
- DRM_DEBUG_VBL from Ville
- non-contentious header fixes from Mikko Rapeli
- small things all over

* tag 'topic/drm-misc-2015-10-19' of git://anongit.freedesktop.org/drm-intel: (31 commits)
  drm/fb-helper: Fix fb refcounting in pan_display_atomic
  drm/fb-helper: Set plane rotation directly
  drm: fix mutex leak in drm_dp_get_mst_branch_device
  drm: Check plane src coordinates correctly during page flip for atomic drivers
  drm: Check crtc viewport correctly with rotated primary plane on atomic drivers
  drm: Refactor plane src coordinate checks
  drm: Swap w/h when converting the mode to src coordidates for a rotated primary plane
  drm: Don't leak fb when plane crtc coodinates are bad
  ALSA: hda - Spell vga_switcheroo consistently
  drm/gem: Use kref_get_unless_zero for the weak mmap references
  drm/vgem: Drop vgem_drm_gem_mmap
  drm: Fix return value of drm_framebuffer_init()
  drm/gem: Use container_of in drm_gem_object_free
  drm/gem: Check locking in drm_gem_object_unreference
  drm/gem: Drop struct_mutex requirement from drm_gem_mmap_obj
  drm/i810_drm.h: include drm/drm.h
  r128_drm.h: include drm/drm.h
  savage_drm.h: include <drm/drm.h>
  gpu/doc: Convert to markdown harder
  gpu/doc: Add vga_switcheroo documentation
  ...

1 files changed, 27 insertions, 8 deletions

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index bd6d4ab..e673c13 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -360,11 +360,7 @@ retry:
 			goto fail;
 		}
 
-		ret = drm_atomic_plane_set_property(plane, plane_state,
-				dev->mode_config.rotation_property,
-				BIT(DRM_ROTATE_0));
-		if (ret != 0)
-			goto fail;
+		plane_state->rotation = BIT(DRM_ROTATE_0);
 
 		/* disable non-primary: */
 		if (plane->type == DRM_PLANE_TYPE_PRIMARY)
@@ -1235,7 +1231,7 @@ int drm_fb_helper_set_par(struct fb_info *info)
 EXPORT_SYMBOL(drm_fb_helper_set_par);
 
 static int pan_display_atomic(struct fb_var_screeninfo *var,
-		struct fb_info *info)
+			      struct fb_info *info)
 {
 	struct drm_fb_helper *fb_helper = info->par;
 	struct drm_device *dev = fb_helper->dev;
@@ -1253,6 +1249,8 @@ retry:
 
 		mode_set = &fb_helper->crtc_info[i].mode_set;
 
+		mode_set->crtc->primary->old_fb = mode_set->crtc->primary->fb;
+
 		mode_set->x = var->xoffset;
 		mode_set->y = var->yoffset;
 
@@ -1268,13 +1266,34 @@ retry:
 	info->var.xoffset = var->xoffset;
 	info->var.yoffset = var->yoffset;
 
-	return 0;
 
 fail:
+	for(i = 0; i < fb_helper->crtc_count; i++) {
+		struct drm_mode_set *mode_set;
+		struct drm_plane *plane;
+
+		mode_set = &fb_helper->crtc_info[i].mode_set;
+		plane = mode_set->crtc->primary;
+
+		if (ret == 0) {
+			struct drm_framebuffer *new_fb = plane->state->fb;
+
+			if (new_fb)
+				drm_framebuffer_reference(new_fb);
+			plane->fb = new_fb;
+			plane->crtc = plane->state->crtc;
+
+			if (plane->old_fb)
+				drm_framebuffer_unreference(plane->old_fb);
+		}
+		plane->old_fb = NULL;
+	}
+
 	if (ret == -EDEADLK)
 		goto backoff;
 
-	drm_atomic_state_free(state);
+	if (ret != 0)
+		drm_atomic_state_free(state);
 
 	return ret;