Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932446AbcJLLIy (ORCPT ); Wed, 12 Oct 2016 07:08:54 -0400 Received: from mga06.intel.com ([134.134.136.31]:28542 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932176AbcJLLIr (ORCPT ); Wed, 12 Oct 2016 07:08:47 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,333,1473145200"; d="scan'208";a="1069400079" Message-ID: <1476270522.2817.12.camel@linux.intel.com> Subject: Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock) From: Joonas Lahtinen To: Paul Bolle , Daniel Vetter , Jani Nikula , David Airlie Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Date: Wed, 12 Oct 2016 14:08:42 +0300 In-Reply-To: <1476266167.7439.8.camel@tiscali.nl> References: <1476266167.7439.8.camel@tiscali.nl> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.20.5 (3.20.5-1.fc24) Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 548 Lines: 19 On ke, 2016-10-12 at 11:56 +0200, Paul Bolle wrote: > On a laptop that tracks the latest stable release (Ie, it now runs > v4.8.1) I see this WARNING >     WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock) > > Full trace pasted below. I never saw this WARNING before v4.8. Since > v4.8 I've had it in all (four, actually) boots. > > What am I expected to do about this WARNING? > Bisecting the offending commit between v4.8 and v4.8.1 would be a good start. Regards, Joonas -- Joonas Lahtinen Open Source Technology Center Intel Corporation