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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 48D23C10F13 for ; Thu, 11 Apr 2019 09:00:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C5CC2084D for ; Thu, 11 Apr 2019 09:00:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="o5vr6izI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726708AbfDKJAN (ORCPT ); Thu, 11 Apr 2019 05:00:13 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:40310 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726121AbfDKJAM (ORCPT ); Thu, 11 Apr 2019 05:00:12 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x3B90AD3071405; Thu, 11 Apr 2019 04:00:10 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1554973210; bh=Hgd31Wn7smTAA6aEyQYRHWXG1uZQvuQ3bQcL2bMRP+w=; h=From:To:CC:Subject:Date; b=o5vr6izI+2iUNei5qi9J0DJYztFjRxLSmWLL1+XfKGed5798MMzyHqmp0Ws827ROr fV5f8ObwKGWTBnQNZ9tpYIKZjC5BHEiGFPDPB2j5NHtp2a5XfBoUN236cq5ZCJRvYP vBM/yREGxyyvr3x1QpLmnEODt/T1WB5kqob4DWRM= Received: from DLEE104.ent.ti.com (dlee104.ent.ti.com [157.170.170.34]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x3B90AU5095527 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 11 Apr 2019 04:00:10 -0500 Received: from DLEE108.ent.ti.com (157.170.170.38) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 11 Apr 2019 04:00:09 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Thu, 11 Apr 2019 04:00:09 -0500 Received: from a0230074-OptiPlex-7010.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x3B907Z6122466; Thu, 11 Apr 2019 04:00:07 -0500 From: Faiz Abbas To: , , CC: , , , Subject: [PATCH v6] mmc: sdhci-omap: Don't finish_mrq() on a command error during tuning Date: Thu, 11 Apr 2019 14:29:37 +0530 Message-ID: <20190411085937.633-1-faiz_abbas@ti.com> X-Mailer: git-send-email 2.19.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org commit 5b0d62108b46 ("mmc: sdhci-omap: Add platform specific reset callback") skips data resets during tuning operation. Because of this, a data error or data finish interrupt might still arrive after a command error has been handled and the mrq ended. This ends up with a "mmc0: Got data interrupt 0x00000002 even though no data operation was in progress" error message. Fix this by adding a platform specific callback for sdhci_irq. Mark the mrq as a failure but wait for a data interrupt instead of calling finish_mrq(). Fixes: 5b0d62108b46 ("mmc: sdhci-omap: Add platform specific reset callback") Signed-off-by: Faiz Abbas Acked-by: Adrian Hunter --- Tested with 100 times boot tests on dra71x-evm, dra72x-evm and dra7xx-evm. v6: Changed return value to u32 to fix the build warning. v5: Drop patch 1 and replace call to sdhci_finish_command() with host->cmd = NULL v4: Fixed commit description for patch 1. Added SDHCI_INT_TIMEOUT to CMD_ERR_MASK in patch 2. v3: Removed the command error specific callback and using the already existing sdhci_irq callback instead. No measurable drop in performance. v2: Added EXPORT_SYMBOL_GPL for sdhci_cmd_err and sdhci_send_command to fix errors when built as module. drivers/mmc/host/sdhci-omap.c | 38 +++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index 5bbed477c9b1..9f20fff9781b 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -797,6 +797,43 @@ void sdhci_omap_reset(struct sdhci_host *host, u8 mask) sdhci_reset(host, mask); } +#define CMD_ERR_MASK (SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX |\ + SDHCI_INT_TIMEOUT) +#define CMD_MASK (CMD_ERR_MASK | SDHCI_INT_RESPONSE) + +static u32 sdhci_omap_irq(struct sdhci_host *host, u32 intmask) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); + + if (omap_host->is_tuning && host->cmd && !host->data_early && + (intmask & CMD_ERR_MASK)) { + + /* + * Since we are not resetting data lines during tuning + * operation, data error or data complete interrupts + * might still arrive. Mark this request as a failure + * but still wait for the data interrupt + */ + if (intmask & SDHCI_INT_TIMEOUT) + host->cmd->error = -ETIMEDOUT; + else + host->cmd->error = -EILSEQ; + + host->cmd = NULL; + + /* + * Sometimes command error interrupts and command complete + * interrupt will arrive together. Clear all command related + * interrupts here. + */ + sdhci_writel(host, intmask & CMD_MASK, SDHCI_INT_STATUS); + intmask &= ~CMD_MASK; + } + + return intmask; +} + static struct sdhci_ops sdhci_omap_ops = { .set_clock = sdhci_omap_set_clock, .set_power = sdhci_omap_set_power, @@ -807,6 +844,7 @@ static struct sdhci_ops sdhci_omap_ops = { .platform_send_init_74_clocks = sdhci_omap_init_74_clocks, .reset = sdhci_omap_reset, .set_uhs_signaling = sdhci_omap_set_uhs_signaling, + .irq = sdhci_omap_irq, }; static int sdhci_omap_set_capabilities(struct sdhci_omap_host *omap_host) -- 2.19.2