diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 38 |
1 files changed, 27 insertions, 11 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 3f5c603f9a2c..37d34ad3a0b8 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -2421,24 +2421,40 @@ static void drm_mode_attachmode(struct drm_device *dev, } int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc, - struct drm_display_mode *mode) + const struct drm_display_mode *mode) { struct drm_connector *connector; - struct drm_display_mode *dup_mode; - int need_dup = 0; + int ret = 0; + struct drm_display_mode *dup_mode, *next; + LIST_HEAD(list); + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { if (!connector->encoder) - break; + continue; if (connector->encoder->crtc == crtc) { - if (need_dup) - dup_mode = drm_mode_duplicate(dev, mode); - else - dup_mode = mode; - drm_mode_attachmode(dev, connector, dup_mode); - need_dup = 1; + dup_mode = drm_mode_duplicate(dev, mode); + if (!dup_mode) { + ret = -ENOMEM; + goto out; + } + list_add_tail(&dup_mode->head, &list); } } - return 0; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + if (!connector->encoder) + continue; + if (connector->encoder->crtc == crtc) + list_move_tail(list.next, &connector->user_modes); + } + + WARN_ON(!list_empty(&list)); + + out: + list_for_each_entry_safe(dup_mode, next, &list, head) + drm_mode_destroy(dev, dup_mode); + + return ret; } EXPORT_SYMBOL(drm_mode_attachmode_crtc); |