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Commit 1828fe6c authored by Dave Airlie's avatar Dave Airlie
Browse files

drm/sysfs: protect sysfs removal code against being run twice. 



a step towards correct hot unplug for USB devices, we need to
remove the userspace facing bits at the unplug time for correct
udev operation.

Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent ce880cb8

drivers/gpu/drm/drm_sysfs.c

+6 −1
Original line number Diff line number Diff line
@@ -454,6 +454,8 @@ void drm_sysfs_connector_remove(struct drm_connector *connector) 
{

	int i;



	if (!connector->kdev.parent)

		return;

	DRM_DEBUG("removing \"%s\" from sysfs\n",

		  drm_get_connector_name(connector));
@@ -461,6 +463,7 @@ void drm_sysfs_connector_remove(struct drm_connector *connector) 
		device_remove_file(&connector->kdev, &connector_attrs[i]);

	sysfs_remove_bin_file(&connector->kdev.kobj, &edid_attr);

	device_unregister(&connector->kdev);

	connector->kdev.parent = NULL;

}

EXPORT_SYMBOL(drm_sysfs_connector_remove);
@@ -533,7 +536,9 @@ int drm_sysfs_device_add(struct drm_minor *minor) 
 */

void drm_sysfs_device_remove(struct drm_minor *minor)

{

	if (minor->kdev.parent)

		device_unregister(&minor->kdev);

	minor->kdev.parent = NULL;

}