From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 840F3C2BA19 for ; Mon, 15 Mar 2021 14:39:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5CECF64F17 for ; Mon, 15 Mar 2021 14:39:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233342AbhCOOih (ORCPT ); Mon, 15 Mar 2021 10:38:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:48942 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233664AbhCOOCR (ORCPT ); Mon, 15 Mar 2021 10:02:17 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D9BEB64F1A; Mon, 15 Mar 2021 14:02:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615816931; bh=PTIV3Q+ldmGS5yR7bJr3pPecoqqWfaeNBLeyEKfVCc4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wb2WvRcnoQQfkrzfP8Z61Iv9VJWTupQFsq+IyJLKG+DbqzI0sccqhXZnkUwl2Sn1W H1mnUT+amr+DhVhRZ1oITzE9vaSIrZp1i4rPGrHjKVzKzOjLHB9jUBf0XWE4uULeTB SPwomhGBnyOo0JCymuGcw+uDMPIbO4h/AVPAxaVA= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Paul Fertser , Adrian Hunter , Ulf Hansson Subject: [PATCH 5.10 194/290] mmc: core: Fix partition switch time for eMMC Date: Mon, 15 Mar 2021 14:54:47 +0100 Message-Id: <20210315135548.468880398@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315135541.921894249@linuxfoundation.org> References: <20210315135541.921894249@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Greg Kroah-Hartman From: Adrian Hunter commit 66fbacccbab91e6e55d9c8f1fc0910a8eb6c81f7 upstream. Avoid the following warning by always defining partition switch time: [ 3.209874] mmc1: unspecified timeout for CMD6 - use generic [ 3.222780] ------------[ cut here ]------------ [ 3.233363] WARNING: CPU: 1 PID: 111 at drivers/mmc/core/mmc_ops.c:575 __mmc_switch+0x200/0x204 Reported-by: Paul Fertser Fixes: 1c447116d017 ("mmc: mmc: Fix partition switch timeout for some eMMCs") Signed-off-by: Adrian Hunter Link: https://lore.kernel.org/r/168bbfd6-0c5b-5ace-ab41-402e7937c46e@intel.com Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/core/mmc.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -423,10 +423,6 @@ static int mmc_decode_ext_csd(struct mmc /* EXT_CSD value is in units of 10ms, but we store in ms */ card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; - /* Some eMMC set the value too low so set a minimum */ - if (card->ext_csd.part_time && - card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) - card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; /* Sleep / awake timeout in 100ns units */ if (sa_shift > 0 && sa_shift <= 0x17) @@ -616,6 +612,17 @@ static int mmc_decode_ext_csd(struct mmc card->ext_csd.data_sector_size = 512; } + /* + * GENERIC_CMD6_TIME is to be used "unless a specific timeout is defined + * when accessing a specific field", so use it here if there is no + * PARTITION_SWITCH_TIME. + */ + if (!card->ext_csd.part_time) + card->ext_csd.part_time = card->ext_csd.generic_cmd6_time; + /* Some eMMC set the value too low so set a minimum */ + if (card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) + card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; + /* eMMC v5 or later */ if (card->ext_csd.rev >= 7) { memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION],