From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from metis.ext.pengutronix.de ([92.198.50.35]:37798 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752838AbaFZIp1 (ORCPT ); Thu, 26 Jun 2014 04:45:27 -0400 Message-ID: <1403772229.4254.4.camel@weser.hi.pengutronix.de> Subject: Re: The imx6q suspend/resume is broken on 3.16-rc due to PCIe From: Lucas Stach To: Shawn Guo Cc: Richard Zhu , "linux-pci@vger.kernel.org" , Sascha Hauer , Bjorn Helgaas , Shawn Guo , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" Date: Thu, 26 Jun 2014 10:43:49 +0200 In-Reply-To: <20140625125306.GB6917@dragon> References: <20140624153559.GA5741@dragon> <20140625062243.GD3242@dragon> <1403693452.4249.1.camel@weser.hi.pengutronix.de> <20140625125306.GB6917@dragon> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org List-ID: Am Mittwoch, den 25.06.2014, 20:53 +0800 schrieb Shawn Guo: > On Wed, Jun 25, 2014 at 12:50:52PM +0200, Lucas Stach wrote: > > Am Mittwoch, den 25.06.2014, 07:50 -0300 schrieb Fabio Estevam: > > > On Wed, Jun 25, 2014 at 3:22 AM, Shawn Guo wrote: > > > > > > > Please test against v3.16-rc1 or -rc2. The breakage on linux-next > > > > should be another issue. > > > > > > Yes, I see it now. Tested on -rc2 and suspend/resume works with PCI > > > driver removed. > > > > Can you please send me a dmesg from a working boot? > > What do you mean by "working boot"? Boot is always working. What fails > is system resuming. > > Shawn > Oops, what I meant is a dmesg after a working resume (from kernel 3.15). I can see how failing to resume from L2 can cause the hang and we should really implement the PHY PD toggling in the pcie driver, but I would like to understand why you don't hit this on 3.15. Regards, Lucas -- Pengutronix e.K. | Lucas Stach | Industrial Linux Solutions | http://www.pengutronix.de/ |