From: Oliver Neukum <oliver@neukum.org>
To: Marcel Holtmann <marcel@holtmann.org>
Cc: Alan Stern <stern@rowland.harvard.edu>,
Sebastian Schmidt <yath@yath.eu.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] hci-usb bugfix
Date: Mon, 10 May 2004 22:38:11 +0200 [thread overview]
Message-ID: <200405102238.11876.oliver@neukum.org> (raw)
In-Reply-To: <1084217971.9639.55.camel@pegasus>
> which results in the same as if we set NULL for the private pointer when
> we claim the second interface. If this really happens then we have more
> problems in the driver itself, because this case won't be handled in
> either way. However I don't think that this will happen, because for
You can trigger it in software through usbfs.
> Bluetooth devices interface 0 and 1 can be seen as a unit. The only
> reason that this was split over two interfaces, was that you don't have
> to stop the bulk transfers when you change the altsetting on the second
> interface.
Yes, but you should really stop using the second interface _before_
returning returning from disconnect() for _that_ interface. You will
operate correctly if the primary interface is disconnected first,
but you cannot depend on that. If the secondary interface is
disconnected first, you have a window where you illegally use an
interface you no longer own.
Regards
Oliver
next prev parent reply other threads:[~2004-05-10 20:38 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-09 19:47 Sebastian Schmidt
2004-05-09 20:39 ` Marcel Holtmann
2004-05-10 16:13 ` Alan Stern
2004-05-10 16:19 ` Marcel Holtmann
2004-05-10 16:36 ` Oliver Neukum
2004-05-10 16:52 ` Marcel Holtmann
2004-05-10 19:15 ` Oliver Neukum
2004-05-10 19:39 ` Marcel Holtmann
2004-05-10 20:38 ` Oliver Neukum [this message]
2004-05-10 20:58 ` Marcel Holtmann
2004-05-10 17:19 ` Alan Stern
2004-05-10 17:27 ` Marcel Holtmann
2004-05-10 17:52 ` Alan Stern
2004-05-10 18:07 ` Marcel Holtmann
2004-05-11 14:59 ` Alan Stern
2004-05-12 13:13 ` Marcel Holtmann
2004-05-09 22:37 ` Soeren Sonnenburg
2004-05-10 10:40 ` Marcel Holtmann
2004-05-11 7:30 ` Soeren Sonnenburg
2004-05-12 13:15 ` Marcel Holtmann
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