From: Linus Torvalds <torvalds@transmeta.com>
To: Alexander Viro <viro@math.psu.edu>
Cc: Patrick Mochel <mochel@osdl.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>, <andre@linux-ide.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [RFC] embedded struct device Re: [patch] IDE driver model update
Date: Tue, 8 Oct 2002 15:12:03 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.44.0210081510550.1226-100000@home.transmeta.com> (raw)
In-Reply-To: <Pine.GSO.4.21.0210081735370.5897-100000@weyl.math.psu.edu>
On Tue, 8 Oct 2002, Alexander Viro wrote:
> That would be nice, if it worked that way. As it is we have
>
> driver allocates foo
> driver grabs a reference to foo->dev
> ....
> somebody else grabs/drops temporary references to foo->dev
> ....
> driver call put_device(&foo->dev)
> driver frees structures refered from foo.
> driver frees foo.
>
> _IF_ the last two steps were done by ->release(), your arguments would
> work. Actually they are done by driver right after the put_device() call.
Right. But that's a driver bug, and it's because this whole thing is
fairly new.
There aren't that many things that actually play with these things (mainly
the PCI and the USB layer, and individual drivers shouldn't care, it's
just the bus layer that does all of this), so we should be able to fix the
cases cleanly.
Linus
next prev parent reply other threads:[~2002-10-08 22:04 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-07 19:30 [patch] IDE driver model update Patrick Mochel
2002-10-07 19:31 ` Patrick Mochel
2002-10-07 19:31 ` Patrick Mochel
2002-10-11 23:06 ` Pavel Machek
2002-10-07 19:31 ` Patrick Mochel
2002-10-07 22:42 ` Alexander Viro
2002-10-07 22:51 ` Patrick Mochel
2002-10-07 22:58 ` Alexander Viro
2002-10-07 23:06 ` Patrick Mochel
2002-10-08 2:17 ` Alexander Viro
2002-10-08 12:21 ` Alan Cox
2002-10-08 12:24 ` Alexander Viro
2002-10-08 13:05 ` Alan Cox
2002-10-08 19:18 ` Andries Brouwer
2002-10-08 13:25 ` jbradford
2002-10-08 14:31 ` Ketil Froyn
2002-10-08 21:34 ` Xavier Bestel
2002-10-08 21:57 ` Pavel Machek
2002-10-08 15:05 ` Benjamin Herrenschmidt
2002-10-08 18:43 ` Patrick Mochel
2002-10-08 20:47 ` [RFC] embedded struct device " Alexander Viro
2002-10-08 21:29 ` Linus Torvalds
2002-10-08 21:42 ` Alexander Viro
2002-10-08 21:53 ` Kai Germaschewski
2002-10-08 21:57 ` Patrick Mochel
2002-10-08 22:51 ` Alan Cox
2002-10-08 21:54 ` Patrick Mochel
2002-10-08 22:12 ` Linus Torvalds [this message]
2002-10-08 22:48 ` Kai Germaschewski
2002-10-08 23:28 ` Linus Torvalds
2002-10-08 22:29 ` Greg KH
2002-10-08 21:30 ` Greg KH
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