From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] r8169: don't use MSI-X on RTL8106e Date: Thu, 16 Aug 2018 12:39:58 -0700 (PDT) Message-ID: <20180816.123958.750435252621963789.davem@davemloft.net> References: <20180815062110.16155-1-jian-hong@endlessm.com> <20180816.122131.604270853620318143.davem@davemloft.net> <458efbf9-5971-653a-e7cd-8c56ba055648@gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: jian-hong@endlessm.com, nic_swsd@realtek.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux@endlessm.com To: hkallweit1@gmail.com Return-path: In-Reply-To: <458efbf9-5971-653a-e7cd-8c56ba055648@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Heiner Kallweit Date: Thu, 16 Aug 2018 21:37:31 +0200 > On 16.08.2018 21:21, David Miller wrote: >> From: >> Date: Wed, 15 Aug 2018 14:21:10 +0800 >> >>> Found the ethernet network on ASUS X441UAR doesn't come back on resume >>> from suspend when using MSI-X. The chip is RTL8106e - version 39. >> >> Heiner, please take a look at this. >> >> You recently disabled MSI-X on RTL8168g for similar reasons. >> >> Now that we've seen two chips like this, maybe there is some other >> problem afoot. >> > Thanks for the hint. I saw it already and just contacted Realtek > whether they are aware of any MSI-X issues with particular chip > versions. With the chip versions I have access to MSI-X works fine. > > There's also the theoretical option that the issues are caused by > broken BIOS's. But so far only chip versions have been reported > which are very similar, at least with regard to version number > (2x VER_40, 1x VER_39). So they may share some buggy component. > > Let's see whether Realtek can provide some hint. > If more chip versions are reported having problems with MSI-X, > then we could switch to a whitelist or disable MSI-X in general. It could be that we need to reprogram some register(s) on resume, which normally might not be needed, and that is what is causing the problem with some chips.