diff options
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 18 | ||||
| -rw-r--r-- | include/drm/drm_crtc.h | 3 |
2 files changed, 18 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index fd14db401517..3b6573527e7f 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -4216,25 +4216,34 @@ drm_property_create_blob(struct drm_device *dev, size_t length, if (!blob) return NULL; + blob->length = length; + + memcpy(blob->data, data, length); + + mutex_lock(&dev->mode_config.blob_lock); + ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); if (ret) { kfree(blob); + mutex_unlock(&dev->mode_config.blob_lock); return NULL; } - blob->length = length; + list_add_tail(&blob->head, &dev->mode_config.property_blob_list); - memcpy(blob->data, data, length); + mutex_unlock(&dev->mode_config.blob_lock); - list_add_tail(&blob->head, &dev->mode_config.property_blob_list); return blob; } static void drm_property_destroy_blob(struct drm_device *dev, struct drm_property_blob *blob) { + mutex_lock(&dev->mode_config.blob_lock); drm_mode_object_put(dev, &blob->base); list_del(&blob->head); + mutex_unlock(&dev->mode_config.blob_lock); + kfree(blob); } @@ -4341,6 +4350,7 @@ int drm_mode_getblob_ioctl(struct drm_device *dev, return -EINVAL; drm_modeset_lock_all(dev); + mutex_lock(&dev->mode_config.blob_lock); blob = drm_property_blob_find(dev, out_resp->blob_id); if (!blob) { ret = -ENOENT; @@ -4357,6 +4367,7 @@ int drm_mode_getblob_ioctl(struct drm_device *dev, out_resp->length = blob->length; done: + mutex_unlock(&dev->mode_config.blob_lock); drm_modeset_unlock_all(dev); return ret; } @@ -5490,6 +5501,7 @@ void drm_mode_config_init(struct drm_device *dev) drm_modeset_lock_init(&dev->mode_config.connection_mutex); mutex_init(&dev->mode_config.idr_mutex); mutex_init(&dev->mode_config.fb_lock); + mutex_init(&dev->mode_config.blob_lock); INIT_LIST_HEAD(&dev->mode_config.fb_list); INIT_LIST_HEAD(&dev->mode_config.crtc_list); INIT_LIST_HEAD(&dev->mode_config.connector_list); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index ca71c03143d1..55ed8f9f45be 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1048,6 +1048,7 @@ struct drm_mode_group { * @poll_running: track polling status for this device * @output_poll_work: delayed work for polling in process context * @property_blob_list: list of all the blob property objects + * @blob_lock: mutex for blob property allocation and management * @*_property: core property tracking * @preferred_depth: preferred RBG pixel depth, used by fb helpers * @prefer_shadow: hint to userspace to prefer shadow-fb rendering @@ -1103,6 +1104,8 @@ struct drm_mode_config { bool delayed_event; struct delayed_work output_poll_work; + struct mutex blob_lock; + /* pointers to standard properties */ struct list_head property_blob_list; struct drm_property *edid_property; |