From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:54670 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751860AbdHGUjW (ORCPT ); Mon, 7 Aug 2017 16:39:22 -0400 Subject: Patch "mmc: core: Fix access to HS400-ES devices" has been added to the 4.9-stable tree To: linux@roeck-us.net, anssi.hannula@bitwise.fi, briannorris@chromium.org, dianders@chromium.org, gregkh@linuxfoundation.org, heiko@sntech.de, shawn.lin@rock-chip.com, ulf.hansson@linaro.org Cc: , From: Date: Mon, 07 Aug 2017 13:39:21 -0700 Message-ID: <15021383612015@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled mmc: core: Fix access to HS400-ES devices to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mmc-core-fix-access-to-hs400-es-devices.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 773dc118756b1f38766063e90e582016be868f09 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 1 Mar 2017 14:11:47 -0800 Subject: mmc: core: Fix access to HS400-ES devices From: Guenter Roeck commit 773dc118756b1f38766063e90e582016be868f09 upstream. HS400-ES devices fail to initialize with the following error messages. mmc1: power class selection to bus width 8 ddr 0 failed mmc1: error -110 whilst initialising MMC card This was seen on Samsung Chromebook Plus. Code analysis points to commit 3d4ef329757c ("mmc: core: fix multi-bit bus width without high-speed mode"), which attempts to set the bus width for all but HS200 devices unconditionally. However, for HS400-ES, the bus width is already selected. Cc: Anssi Hannula Cc: Douglas Anderson Cc: Brian Norris Fixes: 3d4ef329757c ("mmc: core: fix multi-bit bus width ...") Signed-off-by: Guenter Roeck Reviewed-by: Douglas Anderson Reviewed-by: Shawn Lin Tested-by: Heiko Stuebner Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/core/mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1690,7 +1690,7 @@ static int mmc_init_card(struct mmc_host err = mmc_select_hs400(card); if (err) goto free_card; - } else { + } else if (!mmc_card_hs400es(card)) { /* Select the desired bus width optionally */ err = mmc_select_bus_width(card); if (err > 0 && mmc_card_hs(card)) { Patches currently in stable-queue which might be from linux@roeck-us.net are queue-4.9/mmc-core-fix-access-to-hs400-es-devices.patch