From patchwork Tue May 17 18:27:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 573600 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 412DEC433FE for ; Tue, 17 May 2022 18:28:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352156AbiEQS2B (ORCPT ); Tue, 17 May 2022 14:28:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38714 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352151AbiEQS16 (ORCPT ); Tue, 17 May 2022 14:27:58 -0400 Received: from mail-pl1-x630.google.com (mail-pl1-x630.google.com [IPv6:2607:f8b0:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2ECEB49F24; Tue, 17 May 2022 11:27:55 -0700 (PDT) Received: by mail-pl1-x630.google.com with SMTP id i1so18095418plg.7; Tue, 17 May 2022 11:27:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=+6e4auPbEK9DxXd0V9+qfi6AbLb+sAnTsXinMSGP6W8=; b=qsmvBNN7PZ9IFU9rnCNf1FCSMJHglYnLVgRElSGox08wSOT/SH/RyPVYdl7OM5V88a SBBMGb3X5h8kDyeAgKInfHzTRUXDyu/5Sq7EFQlKuTo+kpzBg3Xzl65NrTxqXMGTYwzL xJh6FTOz9inkZ6D0VJvaamjy+UELqDzoBwhb1mlfv5hRgARQmGlFgDRKsmb97+YnQyp0 f5+rFB3by/pRi5LZ2uyto+PK+aYJFsE9SViruLmnviuD2x8N1OtX1QMf4ntaBDEKhPes C8/5ytJrjzonfGCFSQFY1yyuzXAel+fTTv56nJZJC78CzWi75coalEGVY2mv5KV5irph xXfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=+6e4auPbEK9DxXd0V9+qfi6AbLb+sAnTsXinMSGP6W8=; b=piLrjRh92uaVRZZGJ2/tfS7XIbCxWHu0NZQDFstmVeyPJT0wG705noJ7OX+3XKDAyh 8m6C7/65vaa9vmT16O39xiehzaY1amYUcDk3Nv11r6x0a6JsYI4E+J3cWNo4v6mxuftk VprdxyB+LzMWp/74Wr5qiwJE9GYi8ZYGhJZWcLNruKCozPEZURIj+YZd8ITIHXt0yTyG RcwGTgoMZYLwuKDvDs9AbhD34k9yMcY8bBRAuh4gX/DNsapln3h+P29lgD9l+R1y8ra7 qx7y9dMRXmCN22AdGEbLV+VjQiMRqTuYWVs0ZoBGwCWdlkpK/+macNwzXSJ/xAfrRQt/ tdxA== X-Gm-Message-State: AOAM533vWIaSWfIxrHMdWTV1+4dMhlugPJOrbjPpgB/LtDWhoFiNuiNO TCVE0XqJ1rbB/LyCYWtwG0f9cAaocRU= X-Google-Smtp-Source: ABdhPJynwktvzrf7Li/Ht1Wg/Cm+kIzKWWSb0cMIb0X1ql9KH1ykyjANUr9vuT9+7GSUy20IK9JYDw== X-Received: by 2002:a17:90b:314e:b0:1dc:d143:a15d with SMTP id ip14-20020a17090b314e00b001dcd143a15dmr37234806pjb.111.1652812073739; Tue, 17 May 2022 11:27:53 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id b12-20020a170902d88c00b0015e8d4eb1fasm9538656plz.68.2022.05.17.11.27.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 May 2022 11:27:53 -0700 (PDT) From: Florian Fainelli To: stable@vger.kernel.org Cc: Ulf Hansson , Florian Fainelli , Adrian Hunter , Greg Kroah-Hartman , Avri Altman , Bean Huo , Nishad Kamdar , =?utf-8?q?Christian_L=C3=B6hle?= , linux-mmc@vger.kernel.org (open list:MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND...), linux-kernel@vger.kernel.org (open list), alcooperx@gmail.com, kdasu.kdev@gmail.com Subject: [PATCH stable 4.14 3/3] mmc: core: Default to generic_cmd6_time as timeout in __mmc_switch() Date: Tue, 17 May 2022 11:27:46 -0700 Message-Id: <20220517182746.252893-4-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220517182746.252893-1-f.fainelli@gmail.com> References: <20220517182746.252893-1-f.fainelli@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Ulf Hansson commit 533a6cfe08f96a7b5c65e06d20916d552c11b256 upstream All callers of __mmc_switch() should now be specifying a valid timeout for the CMD6 command. However, just to be sure, let's print a warning and default to use the generic_cmd6_time in case the provided timeout_ms argument is zero. In this context, let's also simplify some of the corresponding code and clarify some related comments. Signed-off-by: Ulf Hansson Link: https://lore.kernel.org/r/20200122142747.5690-4-ulf.hansson@linaro.org Signed-off-by: Florian Fainelli --- drivers/mmc/core/mmc_ops.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 44e90062c95a..0767ed1b820f 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -458,10 +458,6 @@ static int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms, bool expired = false; bool busy = false; - /* We have an unspecified cmd timeout, use the fallback value. */ - if (!timeout_ms) - timeout_ms = MMC_OPS_TIMEOUT_MS; - /* * In cases when not allowed to poll by using CMD13 or because we aren't * capable of polling by using ->card_busy(), then rely on waiting the @@ -534,14 +530,20 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, mmc_retune_hold(host); + if (!timeout_ms) { + pr_warn("%s: unspecified timeout for CMD6 - use generic\n", + mmc_hostname(host)); + timeout_ms = card->ext_csd.generic_cmd6_time; + } + /* * If the cmd timeout and the max_busy_timeout of the host are both * specified, let's validate them. A failure means we need to prevent * the host from doing hw busy detection, which is done by converting * to a R1 response instead of a R1B. */ - if (timeout_ms && host->max_busy_timeout && - (timeout_ms > host->max_busy_timeout)) + if (host->max_busy_timeout && + (timeout_ms > host->max_busy_timeout)) use_r1b_resp = false; cmd.opcode = MMC_SWITCH; @@ -552,10 +554,6 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, cmd.flags = MMC_CMD_AC; if (use_r1b_resp) { cmd.flags |= MMC_RSP_SPI_R1B | MMC_RSP_R1B; - /* - * A busy_timeout of zero means the host can decide to use - * whatever value it finds suitable. - */ cmd.busy_timeout = timeout_ms; } else { cmd.flags |= MMC_RSP_SPI_R1 | MMC_RSP_R1;