drm/modeset: add helper to unplug all connectors from sysfs

In order to get correct ordering at hot-unplug for userspace,
we need to tear down all the sysfs bits at the correct time.

This adds a helper to allow drivers to remove the sysfs nodes
for all connectors.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index d2d9dc52ac8..79902835d05 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -540,10 +540,21 @@ void drm_connector_cleanup(struct drm_connector *connector)
 }
 EXPORT_SYMBOL(drm_connector_cleanup);
 
+void drm_connector_unplug_all(struct drm_device *dev)
+{
+        struct drm_connector *connector;
+
+        /* taking the mode config mutex ends up in a clash with sysfs */
+        list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+                drm_sysfs_connector_remove(connector);
+
+}
+EXPORT_SYMBOL(drm_connector_unplug_all);
+
 int drm_encoder_init(struct drm_device *dev,
-                     struct drm_encoder *encoder,
-                     const struct drm_encoder_funcs *funcs,
-                     int encoder_type)
+                      struct drm_encoder *encoder,
+                      const struct drm_encoder_funcs *funcs,
+                      int encoder_type)
 {
         int ret;