From: Oliver Neukum <oliver@neukum.org>
To: Marcel Holtmann <marcel@holtmann.org>
Cc: linux-bluetooth@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [patch]race condition in btusb disconnect() handling
Date: Tue, 19 Aug 2008 17:34:08 +0200 [thread overview]
Message-ID: <200808191734.08795.oliver@neukum.org> (raw)
In-Reply-To: <1219159643.7591.161.camel@violet.holtmann.net>
Am Dienstag 19 August 2008 17:27:23 schrieb Marcel Holtmann:
> > > I am not sure about hci_dev_hold. We ensure that a reference count to
> > > the module is hold when the HCI device is brought up.
> >
> > But won't the module be marked as going away and make try_module_get()
> > fail?
>
> when calling "hciconfig hci0 up" then it is impossible to unload the
> btusb module since we keep a module reference.
There's no guarantee the hci is up when disconnect() is called.
Regards
Oliver
prev parent reply other threads:[~2008-08-19 15:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-19 12:23 [patch]race condition in btusb disconnect() handling Oliver Neukum
2008-08-19 12:43 ` Marcel Holtmann
2008-08-19 13:09 ` Oliver Neukum
2008-08-19 13:28 ` Marcel Holtmann
2008-08-19 13:40 ` Oliver Neukum
2008-08-19 14:05 ` Oliver Neukum
2008-08-19 14:31 ` Marcel Holtmann
2008-08-19 15:14 ` Oliver Neukum
2008-08-19 15:27 ` Marcel Holtmann
2008-08-19 15:34 ` Oliver Neukum [this message]
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