linux-kernel - [PATCH] kobject: set state_initialized to 0 in kobject

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Date:   Tue, 1 Nov 2016 18:41:44 +0800
From:   Songjun Wu <songjun.wu@...rochip.com>
To:     <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>
CC:     Songjun Wu <songjun.wu@...rochip.com>
Subject: [PATCH] kobject: set state_initialized to 0 in kobject_cleanup

If state_initialized is not set to 0 when a kobject is
released, a device is registered, unregistered, and
registered again, the error below will occur.

kobject (dec04bb0): tried to init an initialized object,
something is seriously wrong.

Signed-off-by: Songjun Wu <songjun.wu@...rochip.com>
---

 lib/kobject.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/kobject.c b/lib/kobject.c
index 445dcae..423af4e 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -639,6 +639,8 @@ static void kobject_cleanup(struct kobject *kobj)
 		kobject_del(kobj);
 	}
 
+	kobj->state_initialized = 0;
+
 	if (t && t->release) {
 		pr_debug("kobject: '%s' (%p): calling ktype release\n",
 			 kobject_name(kobj), kobj);
-- 
2.7.4