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Date: Sun, 30 Nov 2008 12:39:24 +0000
From: Al Viro <viro@ZenIV.linux.org.uk>
To: Thomas Meyer <thomas@m3y3r.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: linux-next: WARNING: at fs/sysfs/dir.c:425
	sysfs_add_one+0x31/0x7a()
Message-ID: <20081130123924.GW28946@ZenIV.linux.org.uk>
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On Fri, May 09, 2008 at 10:56:20PM +0200, Thomas Meyer wrote:
> I get this warning while setting up a packet dvd mapping with:
> 
> # pktsetup pktcdvd0 /dev/sr0

[snip]

That ought to fix it:

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index f20bf35..79981f2 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -417,6 +417,7 @@ static int pkt_sysfs_init(void)
 		printk(DRIVER_NAME": failed to create class pktcdvd\n");
 		return ret;
 	}
+	class_pktcdvd->dev_kobj = NULL;
 	return 0;
 }