From 99b91105134836ab8410881a39784eacdcd8a1c2 Mon Sep 17 00:00:00 2001
From: hselasky <hselasky@FreeBSD.org>
Date: Wed, 14 Jan 2015 14:04:29 +0000
Subject: Add a kernel function to delist our kernel character devices, so that
 the device name can be re-used right away in case we are destroying the
 character devices in the background.

MFC after:	4 days
Reported by:	dchagin@
---
 sys/kern/kern_conf.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'sys/kern/kern_conf.c')

diff --git a/sys/kern/kern_conf.c b/sys/kern/kern_conf.c
index d15e5da..8b1fdc1 100644
--- a/sys/kern/kern_conf.c
+++ b/sys/kern/kern_conf.c
@@ -1114,6 +1114,23 @@ destroy_devl(struct cdev *dev)
 	}
 }
 
+static void
+delist_dev_locked(struct cdev *dev)
+{
+	struct cdev *child;
+	devfs_destroy(dev);
+	LIST_FOREACH(child, &dev->si_children, si_siblings)
+		delist_dev_locked(child);
+}
+
+void
+delist_dev(struct cdev *dev)
+{
+	dev_lock();
+	delist_dev_locked(dev);
+	dev_unlock();
+}
+
 void
 destroy_dev(struct cdev *dev)
 {
-- 
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