diff options
| author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2016-09-07 11:52:40 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2016-09-07 13:24:22 +0300 |
| commit | 30c06570cd6716ba392f674c49dee5a69f96e096 (patch) | |
| tree | fd69af7c585f170cbf1db82c25a72f681938cbca /drivers | |
| parent | 737ba10928061c899b7da45e8580ac5c20ff3593 (diff) | |
Revert "drm: Unify handling of blob and object properties"
This reverts commit 77953bd136d2a70bca2dc93b3ccda07a2b37076f.
This causes a kernel panic when trying to assign a blob to a property,
and has obviously never been tested.
Fixes: 77953bd136d2 ("drm: Unify handling of blob and object properties")
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Tested-by: Liu Ying <gnuiyl@gmail.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/8c0d3482-1bb5-6a15-b105-6bda2b31b5dc@linux.intel.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_property.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c index 4139afbcc267..a4d81cf4ffa0 100644 --- a/drivers/gpu/drm/drm_property.c +++ b/drivers/gpu/drm/drm_property.c @@ -870,8 +870,20 @@ bool drm_property_change_valid_get(struct drm_property *property, for (i = 0; i < property->num_values; i++) valid_mask |= (1ULL << property->values[i]); return !(value & ~valid_mask); - } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB) || - drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { + } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) { + struct drm_property_blob *blob; + + if (value == 0) + return true; + + blob = drm_property_lookup_blob(property->dev, value); + if (blob) { + *ref = &blob->base; + return true; + } else { + return false; + } + } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { /* a zero value for an object property translates to null: */ if (value == 0) return true; @@ -888,12 +900,13 @@ bool drm_property_change_valid_get(struct drm_property *property, } void drm_property_change_valid_put(struct drm_property *property, - struct drm_mode_object *ref) + struct drm_mode_object *ref) { if (!ref) return; - if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT) || - drm_property_type_is(property, DRM_MODE_PROP_BLOB)) + if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { drm_mode_object_unreference(ref); + } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) + drm_property_unreference_blob(obj_to_blob(ref)); } |