From cbc7e22151d99ed1dd7649d268ad3d81b9e6255a Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Mon, 20 Feb 2012 14:16:40 +0000
Subject: drm/modeset: add helper to unplug all connectors from sysfs
Git-commit: cbc7e22151d99ed1dd7649d268ad3d81b9e6255a
Patch-mainline: v3.4-rc1

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>
Acked-by: Michal Srb <msrb@suse.com>
---
 drivers/gpu/drm/drm_crtc.c |   17 ++++++++++++++---
 include/drm/drm_crtc.h     |    2 ++
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index d2d9dc5..7990283 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;
 
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 9595c2c..3401761 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -826,6 +826,8 @@ extern int 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 int drm_encoder_init(struct drm_device *dev,
 			    struct drm_encoder *encoder,

