From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 533633502A7; Tue, 12 May 2026 18:15:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778609731; cv=none; b=VHqBs9rKPrtzfeDGe0p2XVF+KJfkVpd7b+FyFnDLMnM5/I+gyCu91zpISZAr2m2X08hDNMBdK14ljPx08ROxwrYJD+a2eMVphFk1s39AdpjyI7/bhAsQUrnrsMbSWssP11C57nKuh+1tgzx/SbfcIOT+YCxJycPFocvPuk9djGs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778609731; c=relaxed/simple; bh=1/bferi5Gvu3mk/nz8kJkioY2OivZTSuY1EPs8GqdHY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mRq1AxHnqLcDNpO+QVaK332eCXlfLJFrIRRZrHoVW7624hOJf1dZygc192oM6wF4R5/Rw4sRsSxDnRIwiwh2hX+O+7wxFGFBxnIhbYUL/3r8p63IAT6iLKDnHjYEkYbturi/pIpqTccuHKsHjUX5NpE2W9nlIy67n/dRJMNfXRk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=f7cNK2VE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="f7cNK2VE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ABAAEC2BCB0; Tue, 12 May 2026 18:15:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778609731; bh=1/bferi5Gvu3mk/nz8kJkioY2OivZTSuY1EPs8GqdHY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f7cNK2VEXTpT6+/ossZqUl7aWJ3S4HqsfAO8/otOrCLHBmTkAKjc8VOOQ1YTahsAK 3Db/tUAqChvSJqsQ8G7A6MQmqlzDSbCmQkS972G6pMAKcZXqFy4Y4IeIxaugIgKbW2 AtTBS0sUxYlv0H3UeMmKfdq3CXpXz5QnULUvc9i4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Avri Altman , Ulf Hansson , Sasha Levin Subject: [PATCH 7.0 294/307] mmc: core: Add quirk for incorrect manufacturing date Date: Tue, 12 May 2026 19:41:29 +0200 Message-ID: <20260512173946.331671269@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260512173940.117428952@linuxfoundation.org> References: <20260512173940.117428952@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Avri Altman [ Upstream commit 263ff314cc5602599d481b0912a381555fcbad28 ] Some eMMC vendors need to report manufacturing dates beyond 2025 but are reluctant to update the EXT_CSD revision from 8 to 9. Changing the Updating the EXT_CSD revision may involve additional testing or qualification steps with customers. To ease this transition and avoid a full re-qualification process, a workaround is needed. This patch introduces a temporary quirk that re-purposes the year codes corresponding to 2010, 2011, and 2012 to represent the years 2026, 2027, and 2028, respectively. This solution is only valid for this three-year period. After 2028, vendors must update their firmware to set EXT_CSD_REV=9 to continue reporting the correct manufacturing date in compliance with the JEDEC standard. The `MMC_QUIRK_BROKEN_MDT` is introduced and enabled for all Sandisk devices to handle this behavior. Signed-off-by: Avri Altman Signed-off-by: Ulf Hansson Stable-dep-of: d6bf2e64dec8 ("mmc: core: Optimize time for secure erase/trim for some Kingston eMMCs") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/core/card.h | 6 ++++++ drivers/mmc/core/mmc.c | 5 +++++ drivers/mmc/core/quirks.h | 3 +++ include/linux/mmc/card.h | 1 + 4 files changed, 15 insertions(+) --- a/drivers/mmc/core/card.h +++ b/drivers/mmc/core/card.h @@ -89,6 +89,7 @@ struct mmc_fixup { #define CID_MANFID_MICRON 0x13 #define CID_MANFID_SAMSUNG 0x15 #define CID_MANFID_APACER 0x27 +#define CID_MANFID_SANDISK_MMC 0x45 #define CID_MANFID_SWISSBIT 0x5D #define CID_MANFID_KINGSTON 0x70 #define CID_MANFID_HYNIX 0x90 @@ -305,4 +306,9 @@ static inline int mmc_card_no_uhs_ddr50_ return c->quirks & MMC_QUIRK_NO_UHS_DDR50_TUNING; } +static inline int mmc_card_broken_mdt(const struct mmc_card *c) +{ + return c->quirks & MMC_QUIRK_BROKEN_MDT; +} + #endif --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -676,6 +676,11 @@ static int mmc_decode_ext_csd(struct mmc /* Adjust production date as per JEDEC JESD84-B51B September 2025 */ if (card->cid.year < 2023) card->cid.year += 16; + } else { + /* Handle vendors with broken MDT reporting */ + if (mmc_card_broken_mdt(card) && card->cid.year >= 2010 && + card->cid.year <= 2012) + card->cid.year += 16; } } --- a/drivers/mmc/core/quirks.h +++ b/drivers/mmc/core/quirks.h @@ -170,6 +170,9 @@ static const struct mmc_fixup __maybe_un MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_NUMONYX, 0x014e, add_quirk, MMC_QUIRK_BROKEN_HPI, 6), + MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_MMC, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_BROKEN_MDT), + END_FIXUP }; --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -329,6 +329,7 @@ struct mmc_card { #define MMC_QUIRK_BROKEN_CACHE_FLUSH (1<<16) /* Don't flush cache until the write has occurred */ #define MMC_QUIRK_BROKEN_SD_POWEROFF_NOTIFY (1<<17) /* Disable broken SD poweroff notify support */ #define MMC_QUIRK_NO_UHS_DDR50_TUNING (1<<18) /* Disable DDR50 tuning */ +#define MMC_QUIRK_BROKEN_MDT (1<<19) /* Wrong manufacturing year */ bool written_flag; /* Indicates eMMC has been written since power on */ bool reenable_cmdq; /* Re-enable Command Queue */