Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752356AbaJVOAe (ORCPT ); Wed, 22 Oct 2014 10:00:34 -0400 Received: from icebox.esperi.org.uk ([81.187.191.129]:35061 "EHLO mail.esperi.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752143AbaJVOAa (ORCPT ); Wed, 22 Oct 2014 10:00:30 -0400 From: Nix To: Johan Hovold Cc: Paul Martin , Daniel Silverstone , Oliver Neukum , Greg Kroah-Hartman , linux-kernel@vger.kernel.org Subject: Re: [3.16.1 BISECTED REGRESSION]: Simtec Entropy Key (cdc-acm) broken in 3.16 References: <878um4tg09.fsf@spindle.srvr.nix> <1409569752.24385.12.camel@linux-fkkt.site> <874mwnosz1.fsf@spindle.srvr.nix> <871tqe2zqt.fsf_-_@spindle.srvr.nix> <20141011195108.GA8275@thinkpad.nowster.org.uk> <87y4smz1l0.fsf@spindle.srvr.nix> <20141012185845.GB2786@localhost> <878uklynq9.fsf@spindle.srvr.nix> <20141014083432.GB7958@localhost> <871tq04fiy.fsf@spindle.srvr.nix> <20141022101458.GK2113@localhost> Emacs: because extension languages should come with the editor built in. Date: Wed, 22 Oct 2014 15:00:22 +0100 In-Reply-To: <20141022101458.GK2113@localhost> (Johan Hovold's message of "Wed, 22 Oct 2014 12:14:58 +0200") Message-ID: <87fveg19xl.fsf@spindle.srvr.nix> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-DCC-dcc1-Metrics: spindle 1182; Body=6 Fuz1=6 Fuz2=6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22 Oct 2014, Johan Hovold uttered the following: > On Wed, Oct 22, 2014 at 10:31:17AM +0100, Nix wrote: >> On 14 Oct 2014, Johan Hovold verbalised: >> >> > On Sun, Oct 12, 2014 at 10:36:30PM +0100, Nix wrote: >> >> I have checked: this code is being executed against a symlink that >> >> points to /dev/ttyACM0, and the tcsetattr() succeeds. (At least, it's >> >> succeeding on the kernel I'm running now, but of course that's 3.16.5 >> >> with this commit reverted...) >> > >> > You could verify that by enabling debugging in the cdc-acm driver and >> > making sure that the corresponding control messages are indeed sent on >> > close. >> >> I have a debugging dump at >> ; it's fairly > > What kernel were you using here? The log seems to suggest that it was > generated with the commit in question reverted. Wurgle. I think I was probably using the wrong one, as you suggest. Hell. That's no use at all is it. Still, at least you know what it looks like when it works. :) I'll retry with the right one. > What kernel version are you using? And do you have autosuspend enabled? 3.16.6 (but it's happened for 3.16.* obviously). No autosuspend (no *way* can this box suspend, but it only draws a couple of watts so I don't care). -- NULL && (void) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/