[PATCH 3/5] drm/modeset: add helper to unplug all connectors from sysfs

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

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 at redhat.com>
---
 drivers/gpu/drm/drm_crtc.c |   11 +++++++++++
 include/drm/drm_crtc.h     |    2 ++
 2 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 2c27a2e..e6a2a3e 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -523,6 +523,17 @@ 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);
+
 void drm_encoder_init(struct drm_device *dev,
 		      struct drm_encoder *encoder,
 		      const struct drm_encoder_funcs *funcs,
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 783322b..927e31b 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -825,6 +825,8 @@ extern void drm_connector_init(struct drm_device *dev,
 			    int connector_type);
 
 extern void drm_connector_cleanup(struct drm_connector *connector);
+/* helper to unplug all connectors from sysfs for device */
+extern void drm_connector_unplug_all(struct drm_device *dev);
 
 extern void drm_encoder_init(struct drm_device *dev,
 			     struct drm_encoder *encoder,
-- 
1.7.6