From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 18 May 2026 15:15:11 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wOxoN-00195T-2c for lore@lore.pengutronix.de; Mon, 18 May 2026 15:15:11 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1wOxoN-00033x-7Q for lore@pengutronix.de; Mon, 18 May 2026 15:15:11 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:To:In-Reply-To: References:Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version: Subject:Date:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZJ9l1bwaAE0jYck++ToZcinTQ/RPXS3SDKyhwOerXj8=; b=hW5PZ2Y/Vv1yvp1/FLjbBHSF+Y 5h0yyBnQ5M9+LdVTShdGFBIA67xqw5jQixU6xevTavIx8F1J0M+MmPK95L4G3Y6D8K4C4X+JYoQvB QWl4wIBq84UGzClTGiCSREicU3IrFZIlg3yHxLCjYsNKYCgOyZ5FPwJ/mfJcNw5VPc7JyZovQUDtr IM+Z1j1jSPpOzFg66cRkCzoWRN0AZa7VbT+8RNbl7MxDNMQpaJHP+Z87YghhtST28G3chAtqmtzHS nlhlaaPnB3RCrMUYuR+N2jQvNzKWvVN17nIi5xluxPiCI10QRb9HJPgZIekGpYluI1gknb++SjN51 xH6XYlew==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wOxnS-0000000FmDW-0TQa; Mon, 18 May 2026 13:14:14 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wOxnQ-0000000FmCa-229g for barebox@lists.infradead.org; Mon, 18 May 2026 13:14:13 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1wOxms-0002UR-Pa; Mon, 18 May 2026 15:13:38 +0200 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wOxmr-000bPF-1b; Mon, 18 May 2026 15:13:38 +0200 Received: from [::1] (helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1wOxmr-000000000ZS-3yzP; Mon, 18 May 2026 15:13:37 +0200 From: Sascha Hauer Date: Mon, 18 May 2026 15:13:37 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260518-rockchip-emmc-hs400-v2-2-789ce495f70b@pengutronix.de> References: <20260518-rockchip-emmc-hs400-v2-0-789ce495f70b@pengutronix.de> In-Reply-To: <20260518-rockchip-emmc-hs400-v2-0-789ce495f70b@pengutronix.de> To: BAREBOX X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1779110017; l=1104; i=s.hauer@pengutronix.de; s=20230412; h=from:subject:message-id; bh=MixR/2uF6KToP/fUaj6Hu4TlufausDuYCcEVWs6wcJo=; b=0s9OIQszihH+0eFcWwP0bbREYzAvYLEqRFiMCPwj7xJw7My2M5aiIunyVqihHn1Koaf3B+/KM 5LtJAX1CL7JCWFzvpph3sr0IalX3+VP5VQUEKjifbH55Ct8DdlsqsRj X-Developer-Key: i=s.hauer@pengutronix.de; a=ed25519; pk=4kuc9ocmECiBJKWxYgqyhtZOHj5AWi7+d0n/UjhkwTg= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260518_061412_523276_3CCD96EE X-CRM114-Status: UNSURE ( 8.64 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ahmad Fatoum Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.1 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 02/10] mci: mmc_send_tuning: actually point data.dest at the buffer X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) mmc_send_tuning() allocates a tuning-block-sized buffer with calloc() but never assigns it to data.dest, so the host transfers the tuning block to wherever data.dest happened to be (uninitialised — typically NULL). The subsequent memcmp against the expected pattern then always mismatches, so any caller would observe -EIO regardless of the controller actually receiving the block correctly. Fix by setting data.dest to the buffer. Reviewed-by: Ahmad Fatoum Signed-off-by: Sascha Hauer --- drivers/mci/mci-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c index 33934a6a35..23b9117869 100644 --- a/drivers/mci/mci-core.c +++ b/drivers/mci/mci-core.c @@ -1684,6 +1684,7 @@ int mmc_send_tuning(struct mci *mci, u32 opcode) mci_setup_cmd(&cmd, opcode, 0, MMC_RSP_R1 | MMC_CMD_ADTC); cmd.data = xzalloc(sizeof(struct mci_data)); + cmd.data->dest = data_buf; cmd.data->blocksize = size; cmd.data->blocks = 1; cmd.data->flags = MMC_DATA_READ; -- 2.47.3