From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from fortimail.online.lv ([81.198.164.220]:55129 "EHLO fortimail.online.lv" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757039AbbBFQC7 (ORCPT ); Fri, 6 Feb 2015 11:02:59 -0500 Received: from mailo-proxy2.online.lv (smtp.online.lv [81.198.164.193]) by fortimail.online.lv with ESMTP id t16G2p7i017726-t16G2p7k017726 (version=TLSv1.2 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 6 Feb 2015 18:02:51 +0200 Message-ID: <54D4E5AA.9050606@apollo.lv> Date: Fri, 06 Feb 2015 18:02:50 +0200 From: Raimonds Cicans MIME-Version: 1.0 To: Hans Verkuil , Jurgen Kramer CC: linux-media@vger.kernel.org Subject: Re: [REGRESSION] media: cx23885 broken by commit 453afdd "[media] cx23885: convert to vb2" References: <54B24370.6010004@apollo.lv> <54C9E238.9090101@xs4all.nl> <54CA1EB4.8000103@apollo.lv> <54CA23BE.7050609@xs4all.nl> <54CE24F2.7090400@apollo.lv> <54CF4508.9070305@xs4all.nl> <1423065972.2650.1.camel@xs4all.nl> <54D24685.1000708@xs4all.nl> <54D278CF.9010605@apollo.lv> In-Reply-To: <54D278CF.9010605@apollo.lv> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 04.02.2015 21:53, Raimonds Cicans wrote: > On 04.02.2015 18:19, Hans Verkuil wrote: >> On 02/04/2015 05:06 PM, Jurgen Kramer wrote: >>> Hi Hans, >>> >>> On Mon, 2015-02-02 at 10:36 +0100, Hans Verkuil wrote: >>>> Raimonds and Jurgen, >>>> >>>> Can you both test with the following patch applied to the driver: >> Raimond, do you still see the AMD iommu faults with this patch? > > I have limited access to this box at workdays. I will try to test > your patch tomorrow. > > Unfortunately I still see AMD iommu faults. Test environment: kernel: 3.18.1 (I was unable to compile drivers on kernel 3.13.10) media tree: pure main media tree + your patch test: 1) warm reboot 2) run command "w_scan -fs -s S13E0 -D0c -a X" where X - receiver's number Tests were run on single receiver Observations: 1) Tests were run three times on first receiver and three times on second. Only one test from three failed on first receiver. All tests failed on second receiver. 2) I have feeling that with your patch faults on first receiver appear less often but this may be pure luck or placebo. Raimonds Cicans