From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed, 17 Dec 2014 19:24:02 +0000 (+0100)
Subject: Merge branch 'topic/core-stuff' into topic/atomic-core
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=72a3697097b8dc92f5b8362598f5730a9986eb83;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

Merge branch 'topic/core-stuff' into topic/atomic-core

Backmerge my drm-misc branch because of conflicts. Just simple stuff
but better to clear this out before I merge the other atomic patches.

Conflicts:
drivers/gpu/drm/drm_crtc.c
drivers/gpu/drm/drm_edid.c

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---

72a3697097b8dc92f5b8362598f5730a9986eb83
diff --cc drivers/gpu/drm/drm_crtc.c
index 481bb2598b62,6700ebafef16..303c9918a2d5
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@@ -4197,17 -4132,11 +4192,19 @@@ int drm_mode_connector_update_edid_prop
  }
  EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
  
 -static bool drm_property_change_is_valid(struct drm_property *property,
 -					 uint64_t value)
 +/* Some properties could refer to dynamic refcnt'd objects, or things that
 + * need special locking to handle lifetime issues (ie. to ensure the prop
 + * value doesn't become invalid part way through the property update due to
 + * race).  The value returned by reference via 'obj' should be passed back
 + * to drm_property_change_valid_put() after the property is set (and the
 + * object to which the property is attached has a chance to take it's own
 + * reference).
 + */
 +static bool drm_property_change_valid_get(struct drm_property *property,
 +					 uint64_t value, struct drm_mode_object **ref)
  {
+ 	int i;
+ 
  	if (property->flags & DRM_MODE_PROP_IMMUTABLE)
  		return false;
  
@@@ -4236,41 -4164,25 +4234,46 @@@
  		/* a zero value for an object property translates to null: */
  		if (value == 0)
  			return true;
 -		/*
 -		 * NOTE: use _object_find() directly to bypass restriction on
 -		 * looking up refcnt'd objects (ie. fb's).  For a refcnt'd
 -		 * object this could race against object finalization, so it
 -		 * simply tells us that the object *was* valid.  Which is good
 -		 * enough.
 -		 */
 -		obj = _object_find(property->dev, value, property->values[0]);
 -		return obj != NULL;
 +
 +		/* handle refcnt'd objects specially: */
 +		if (property->values[0] == DRM_MODE_OBJECT_FB) {
 +			struct drm_framebuffer *fb;
 +			fb = drm_framebuffer_lookup(property->dev, value);
 +			if (fb) {
 +				*ref = &fb->base;
 +				return true;
 +			} else {
 +				return false;
 +			}
 +		} else {
 +			return _object_find(property->dev, value, property->values[0]) != NULL;
 +		}
 +	} else {
 +		int i;
 +		for (i = 0; i < property->num_values; i++)
 +			if (property->values[i] == value)
 +				return true;
 +		return false;
  	}
+ 
+ 	for (i = 0; i < property->num_values; i++)
+ 		if (property->values[i] == value)
+ 			return true;
+ 	return false;
  }
  
 +static void drm_property_change_valid_put(struct drm_property *property,
 +		struct drm_mode_object *ref)
 +{
 +	if (!ref)
 +		return;
 +
 +	if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
 +		if (property->values[0] == DRM_MODE_OBJECT_FB)
 +			drm_framebuffer_unreference(obj_to_fb(ref));
 +	}
 +}
 +
  /**
   * drm_mode_connector_property_set_ioctl - set the current value of a connector property
   * @dev: DRM device