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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEE9FC77B7F for ; Mon, 8 May 2023 11:35:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236053AbjEHLfV (ORCPT ); Mon, 8 May 2023 07:35:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236055AbjEHLfK (ORCPT ); Mon, 8 May 2023 07:35:10 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3E012D70 for ; Mon, 8 May 2023 04:34:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id F0CF4632A4 for ; Mon, 8 May 2023 11:34:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD01EC433D2; Mon, 8 May 2023 11:34:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683545674; bh=48/eudZdzzmA1UBz6KklCoUzu0cICh+fZ54nGW3bJkw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sG8pRqHzn8OA29jXREh9aiBFEdEdfGZSRyblu/HWtnXa5GRbhVzIOwUQ5M2bDBjwi z+CLvui6Z92JbSmFwL0QrnNlrpuIABgwTrg06E9gD625ggfLMuKvZpeatCCixUah+d 9hH4WKiY5j/EqYBmOvlefC9GsFFBv1HETwzkvB7A= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Georgii Kruglov , Adrian Hunter , Ulf Hansson , Sasha Levin Subject: [PATCH 5.15 116/371] mmc: sdhci-of-esdhc: fix quirk to ignore command inhibit for data Date: Mon, 8 May 2023 11:45:17 +0200 Message-Id: <20230508094816.625735560@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094811.912279944@linuxfoundation.org> References: <20230508094811.912279944@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Georgii Kruglov [ Upstream commit 0dd8316037a2a6d85b2be208bef9991de7b42170 ] If spec_reg is equal to 'SDHCI_PRESENT_STATE', esdhc_readl_fixup() fixes up register value and returns it immediately. As a result, the further block (spec_reg == SDHCI_PRESENT_STATE) &&(esdhc->quirk_ignore_data_inhibit == true), is never executed. The patch merges the second block into the first one. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 1f1929f3f2fa ("mmc: sdhci-of-esdhc: add quirk to ignore command inhibit for data") Signed-off-by: Georgii Kruglov Acked-by: Adrian Hunter Link: https://lore.kernel.org/r/20230321203715.3975-1-georgy.kruglov@yandex.ru Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin --- drivers/mmc/host/sdhci-of-esdhc.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 04a37fd137ee1..ea9bb545b1a21 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -126,6 +126,7 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host, return ret; } } + /* * The DAT[3:0] line signal levels and the CMD line signal level are * not compatible with standard SDHC register. The line signal levels @@ -137,6 +138,16 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host, ret = value & 0x000fffff; ret |= (value >> 4) & SDHCI_DATA_LVL_MASK; ret |= (value << 1) & SDHCI_CMD_LVL; + + /* + * Some controllers have unreliable Data Line Active + * bit for commands with busy signal. This affects + * Command Inhibit (data) bit. Just ignore it since + * MMC core driver has already polled card status + * with CMD13 after any command with busy siganl. + */ + if (esdhc->quirk_ignore_data_inhibit) + ret &= ~SDHCI_DATA_INHIBIT; return ret; } @@ -151,19 +162,6 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host, return ret; } - /* - * Some controllers have unreliable Data Line Active - * bit for commands with busy signal. This affects - * Command Inhibit (data) bit. Just ignore it since - * MMC core driver has already polled card status - * with CMD13 after any command with busy siganl. - */ - if ((spec_reg == SDHCI_PRESENT_STATE) && - (esdhc->quirk_ignore_data_inhibit == true)) { - ret = value & ~SDHCI_DATA_INHIBIT; - return ret; - } - ret = value; return ret; } -- 2.39.2