Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754463AbbKWQ5g (ORCPT ); Mon, 23 Nov 2015 11:57:36 -0500 Received: from mail-yk0-f169.google.com ([209.85.160.169]:33410 "EHLO mail-yk0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752542AbbKWQ5e (ORCPT ); Mon, 23 Nov 2015 11:57:34 -0500 MIME-Version: 1.0 In-Reply-To: <56531E3B.6060601@linaro.org> References: <56531E3B.6060601@linaro.org> Date: Mon, 23 Nov 2015 08:57:32 -0800 X-Google-Sender-Auth: y_fln7VRQe2J4HLl7PZaXUKdHw4 Message-ID: Subject: Re: dw_mmc: HLE errors From: Doug Anderson To: Jorge Ramirez-Ortiz Cc: Jaehoon Chung , Ulf Hansson , Alim Akhtar , Sonny Rao , Andrew Bresticker , =?UTF-8?Q?Heiko_St=C3=BCbner?= , "linux-kernel@vger.kernel.org" , "linux-mmc@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1541 Lines: 44 Jorge, On Mon, Nov 23, 2015 at 6:10 AM, Jorge Ramirez-Ortiz wrote: > Doug/Jaehoon, > > Were there any follow ups to this thread [1] from March 30, 2015? > We are seeing HLE errors on 3.18 and we are trying to determine if a solution > was ever delivered. > On inspection, I can't find anything specific in recent kernels that address > this particular issue (was the actual root cause identified?) > > I put together a possible work-around that avoids the HLE storm from occurring > for this specific SoC [2]. > However we'd rather not merge this -or any other similar fix- if there is a > generic solution already that we can pick up from mainline. Nothing landed that I'm aware of. Are you on SDIO, SD or eMMC? Trying to do UHS? I know that this patch mattered for me for UHS: 7c5209c315ea mmc: core: Increase delay for voltage to stabilize from 3.3V to 1.8V Also important for UHS (for at least some folks) were patches like: 9c85f37a2984 mmc: core: Add mmc_regulator_set_vqmmc() ...that attempted to get voltages more proper... In the ChromeOS tree we did just land treating HLE errors as data and cmd errors . It's not wonderful but it's better than letting an interrupt go off forever... -Doug -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/