From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Werner Almesberger <werner@openmoko.org>
Cc: linux-wireless@vger.kernel.org
Subject: Re: rfkill: how murderous can it be ?
Date: Tue, 13 Jan 2009 00:54:01 +0000 [thread overview]
Message-ID: <20090113005401.GA7565@srcf.ucam.org> (raw)
In-Reply-To: <20090112191514.GA22112@almesberger.net>
On Mon, Jan 12, 2009 at 05:15:14PM -0200, Werner Almesberger wrote:
> Alternatively, we could just power down the whole WLAN module. That is
> easily done and very reliable. However, MAC state (ESSID, keys, and a
> host of other settings) is obliterated if we do this. A watchful user
> space (e.g., wpa_supplicant) could then restore the status quo ante.
Some platform rfkill methods will perform a logical PCI hotplug of the
device, without any means of notifying the driver beforehand. Since this
will destroy the driver structure, I think we really need to leave state
restoration up to userspace.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2009-01-13 0:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-12 19:15 rfkill: how murderous can it be ? Werner Almesberger
2009-01-12 19:31 ` Hans Henry von Tresckow
2009-01-13 13:14 ` Henrique de Moraes Holschuh
2009-01-13 16:11 ` Werner Almesberger
2009-01-13 20:56 ` Henrique de Moraes Holschuh
2009-01-12 19:34 ` Dan Williams
2009-01-12 19:49 ` Michael Buesch
2009-01-12 21:13 ` Werner Almesberger
2009-01-13 15:17 ` Michael Buesch
2009-01-13 0:54 ` Matthew Garrett [this message]
2009-01-13 13:21 ` Henrique de Moraes Holschuh
2009-01-13 13:40 ` Johannes Berg
2009-01-15 2:16 ` Henrique de Moraes Holschuh
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