linux-kernel - Re: [PCI] duplicate sysfs symbols getting registered in current git

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Date:	Wed, 27 Feb 2008 14:21:03 +0100
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Guennadi Liakhovetski <g.liakhovetski@....de>
Cc:	Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org
Subject: Re: [PCI] duplicate sysfs symbols getting registered in current git

On Wed, 27 Feb 2008 13:33:13 +0100 (CET),
Guennadi Liakhovetski <g.liakhovetski@....de> wrote:

> You mean the kernel panic without CONFIG_SYSFS_DEPRECATED? No, 
> unfortunately is doesn't.

Hm, dev->kobj.parent may be NULL in cleanup_device_parent(). Does this
one help?

---
 drivers/base/core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-2.6.orig/drivers/base/core.c
+++ linux-2.6/drivers/base/core.c
@@ -621,7 +621,8 @@ static struct kobject *get_device_parent
 static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir)
 {
 	/* see if we live in a "glue" directory */
-	if (!dev->class || glue_dir->kset != &dev->class->class_dirs)
+	if (!glue_dir || !dev->class ||
+	    glue_dir->kset != &dev->class->class_dirs)
 		return;
 
 	kobject_put(glue_dir);
--
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