From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <50E32E71.7080000@openvz.org> Date: Tue, 01 Jan 2013 22:44:01 +0400 From: Konstantin Khlebnikov MIME-Version: 1.0 To: "linux-kernel@vger.kernel.org" , linux-pci@vger.kernel.org, Bjorn Helgaas Subject: Re: [REGRESSION 3.8-r1] broken pci irq/pm state for e1000e device References: <50E32C52.4000008@openvz.org> In-Reply-To: <50E32C52.4000008@openvz.org> Content-Type: text/plain; charset=UTF-8; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: Konstantin Khlebnikov wrote: > Seems like it's unrelated to e1000e driver itself, because I tried to > revert all it's changes down to 3.6 one by one and it does not help. > > Looks like regression somewhere in pci-bus irq or power-management. > because I see underflow of counter pci_dev->enable_cnt: > > root@zurg:/sys/bus/pci/devices# cat 0000\:00\:19.0/enable ; modprobe e1000e ; sleep 2 ; rmmod e1000e ; cat 0000\:00\:19.0/enable > 4294967288 > 4294967287 > > without sleep in the middle it does not work Hmm, 3.7 also affected. This is not good. root@zurg:/sys/bus/pci/devices# cat 0000\:00\:19.0/enable 4294967293 root@zurg:/sys/bus/pci/devices# uname -a Linux zurg 3.7.1-zurg #631 SMP Sat Dec 29 11:54:15 MSK 2012 x86_64 GNU/Linux > > my kernel config in attachment > hardware: lenovo thinkpad x220 > > root@zurg:/sys/bus/pci/devices# uname -a > Linux zurg 3.8.0-rc1-zurg-00091-g4a490b7 #632 SMP Tue Jan 1 20:02:31 MSK 2013 x86_64 GNU/Linux >