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From: Martin Waitz <tali@admingilde.org>
To: Patrick Mochel <mochel@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: device interface api
Date: Wed, 18 Dec 2002 01:40:39 +0100	[thread overview]
Message-ID: <20021218004039.GA1115@admingilde.org> (raw)

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hi :)

please have a look at interface_add_data:


int interface_add_data(struct intf_data * data)
{
	struct device_interface * intf = intf_from_data(data);

	data->intf_num = data->intf->devnum++;
	data->kobj.subsys = &intf->subsys;
	kobject_register(&data->kobj);
	[...]


data->kobj.subsys is initialized here, but intf_from_data
is using this data->kobj.subsys to get intf, instead of data->intf.
do you want to remove data->intf?
either way, interface_add_data should change.

are interface users supposed to set data->intf or data->kobj.subsys?



another small glitch i noticed while diggin in the code:

================================================================
--- linux-2.5/lib/kobject.c  Tue Dec 10 12:59:02 2002
+++ linux/lib/kobject.c       Tue Dec 17 13:15:19 2002
@@ -218,7 +218,7 @@ int subsystem_register(struct subsystem 
                s->kobj.parent = &s->parent->kobj;
        pr_debug("subsystem %s: registering, parent: %s\n",
                 s->kobj.name,s->parent ? s->parent->kobj.name : "<none>");
-       return kobject_register(&s->kobj);
+       return kobject_add(&s->kobj);
 }
 
 void subsystem_unregister(struct subsystem * s)
================================================================

subsystem_register first calls subsystem_init, which already
does kobject_init, so a full kobject_register is not needed
(and is in fact bad, as it again increases the refcounter for kobj.subsys)


-- 
CU,		  / Friedrich-Alexander University Erlangen, Germany
Martin Waitz	//  [Tali on IRCnet]  [tali.home.pages.de] _________
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noch Sicherheit verdient.
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             reply	other threads:[~2002-12-18  0:33 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-18  0:40 Martin Waitz [this message]
2002-12-19 19:31 ` device interface api Patrick Mochel

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