From patchwork Thu May 23 11:13:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Kucera X-Patchwork-Id: 798600 Received: from speedy.danman.eu (speedy.danman.eu [46.227.180.235]) (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 0523381AC7 for ; Thu, 23 May 2024 11:13:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.227.180.235 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716462835; cv=none; b=igbp93F52j7XPQQX3mBUREz3+MPsHnNhC2MqDamnTXG6qpRehxqoW5Halr3OAtRR5d8b5OaxllqIVosOJj9X5Y+k6RCbRTIcEoWaCB02RI79gGMUXyWM+KnXkCnGssf1leCT9S9ebUTwFfjjaRNmX/34QrQr0fcmV/cSy2OdyOg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716462835; c=relaxed/simple; bh=Y55yFLHdKD1NNJbp+c/hkJiWe2gpT+FuO5g//coJMxg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=A/TsrvcTKtAosr24XmXcgmAvaG+72Ngy0b9qL6K0FhwbK8cJmsFQnYlZYbnFjq2YjnO/esKyR+6YThoaiTtM9fSybdtXbotkGCBzKLeVL/ThHt0SJAELFJLTXdqqQ3u2sIgKoE1GQVYo2weV77zseWPVzOydsxPUTZnjQcegJiw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=danman.eu; spf=pass smtp.mailfrom=danman.eu; arc=none smtp.client-ip=46.227.180.235 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=danman.eu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=danman.eu Received: from silverhorse.lan (unknown [62.197.239.54]) by speedy.danman.eu (Postfix) with ESMTPSA id 664D62406F6; Thu, 23 May 2024 13:13:43 +0200 (CEST) From: linux-mmc@danman.eu To: linux-mmc@vger.kernel.org, ulf.hansson@linaro.org Cc: Daniel Kucera Subject: [PATCH v2] mmc: core: allow detection of locked cards Date: Thu, 23 May 2024 13:13:17 +0200 Message-Id: <20240523111317.594583-1-linux-mmc@danman.eu> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Daniel Kucera Locked card will not reply to SEND_SCR or SD_STATUS commands so it was failing to initialize previously. When skipped, the card will get initialized and CMD42 can be sent using ioctl to unlock the card or remove password protection. Until unlocked, all read/write calls will timeout. Signed-off-by: Daniel Kucera --- drivers/mmc/core/sd.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 1c8148cdd..0eebfea02 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -928,8 +928,20 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, bool reinit) { int err; + u32 card_status; - if (!reinit) { + err = mmc_send_status(card, &card_status); + if (err){ + pr_err("%s: unable to get card status\n", + mmc_hostname(host)); + return err; + } + + if (card_status & R1_CARD_IS_LOCKED){ + pr_warn("%s: card is locked\n", mmc_hostname(host)); + } + + if (!reinit && !(card_status & R1_CARD_IS_LOCKED)) { /* * Fetch SCR from card. */