From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (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 012E22868B4; Mon, 30 Jun 2025 12:58:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.207.212.93 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751288298; cv=none; b=BqmJMqZRjbY6p3HckJQZonGKXd/cMQzgZ6SU6fMHuMks21u9vd47v5ud/Uscu+9M5Do2Jh0AxYFLDZ6kbndFesNLePI4cfs/mQ4KeNhHypj8hDrHjzMLbq9Q4N/4Vif6gWSbC1BZzv4i15X7vbOo1h79L9k3hV92vOf6QKPgfOk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751288298; c=relaxed/simple; bh=3CRG5cL6WglhSwCH6DI4xdQaiWDa64Jtm8Xm4UcLtaw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=tTnRQp9nXSuOh72EaePgacsGnzIFxSNEACbXssukSvmWKsqZ96lr3GmxslfX+DBmsAXxITsDKzCeJA3cfiLlmyFF3YwCVPbWWMnN+HFFHJYM1WbsAMPnq20gTzCQTa6gCAYrwv8TD29jZOaKJcOszfGYpHazBe5oDQY96jFnIYY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=4JnjG6lf; arc=none smtp.client-ip=91.207.212.93 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="4JnjG6lf" Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 55U8mfZl011728; Mon, 30 Jun 2025 14:57:55 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= OM4qEJBb0Q3JHjpYV6uTT5JxCF8eDkNfwEjYMoecZg8=; b=4JnjG6lf/RxF5fA6 QisoqspaK74+Z9UkDQlz8Lg2md3foRIsHNUFAYpmpnP7YzTRiVUtthx20xEuKNZW PeIJglIDwj+hIwd5cHmOUqAHeyGB0KjixT0iyFKeZ/3Y3l+GGZxuHdUYFtwTl+Il bDQhBvgBKrZD0CDWCwQscW0vFELd/rZf+JEUwfoREa9ffIx/WSYCY5sDLIXgNJrL rjQwFUHuvwohgLVDSrOq0S3CGG/9h7zdeOFSj7sbUVHdpM3nCfT3QG3l0ub1ObAF 9Weq77j5VaW0EteajI1TfSQzhFeCXjbr6jYI/tKkElcxjiM9Mm5zEYYlUE7Y4N39 o6x6cQ== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 47j79h7b9v-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 30 Jun 2025 14:57:55 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 172BB4004F; Mon, 30 Jun 2025 14:56:27 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node2.st.com [10.75.129.70]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 65C64B42910; Mon, 30 Jun 2025 14:55:25 +0200 (CEST) Received: from localhost (10.252.20.7) by SHFDAG1NODE2.st.com (10.75.129.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Mon, 30 Jun 2025 14:55:25 +0200 From: =?utf-8?q?Cl=C3=A9ment_Le_Goffic?= Date: Mon, 30 Jun 2025 14:55:14 +0200 Subject: [PATCH v3 2/3] i2c: stm32f7: unmap DMA mapped buffer Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-ID: <20250630-i2c-upstream-v3-2-7a23ab26683a@foss.st.com> References: <20250630-i2c-upstream-v3-0-7a23ab26683a@foss.st.com> In-Reply-To: <20250630-i2c-upstream-v3-0-7a23ab26683a@foss.st.com> To: Pierre-Yves MORDRET , Alain Volmat , Andi Shyti , "Maxime Coquelin" , Alexandre Torgue , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , "M'boumba Cedric Madianga" , Wolfram Sang CC: Pierre-Yves MORDRET , , , , , , , , =?utf-8?q?Cl=C3=A9ment_Le_Goffic?= X-Mailer: b4 0.15-dev-c25d1 X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-30_03,2025-06-27_01,2025-03-28_01 Fix an issue where the mapped DMA buffer was not unmapped. Fixes: 7ecc8cfde553 ("i2c: i2c-stm32f7: Add DMA support") Acked-by: Alain Volmat Signed-off-by: Clément Le Goffic --- drivers/i2c/busses/i2c-stm32f7.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index e4aaeb2262d0..042386b4cabe 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -1554,6 +1554,8 @@ static irqreturn_t stm32f7_i2c_handle_isr_errs(struct stm32f7_i2c_dev *i2c_dev, if (i2c_dev->use_dma) { stm32f7_i2c_disable_dma_req(i2c_dev); dmaengine_terminate_async(dma->chan_using); + dma_unmap_single(i2c_dev->dev, dma->dma_buf, dma->dma_len, + dma->dma_data_dir); } i2c_dev->master_mode = false; @@ -1622,6 +1624,8 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) if (i2c_dev->use_dma) { stm32f7_i2c_disable_dma_req(i2c_dev); dmaengine_terminate_async(dma->chan_using); + dma_unmap_single(i2c_dev->dev, dma->dma_buf, dma->dma_len, + dma->dma_data_dir); } f7_msg->result = -ENXIO; } @@ -1642,6 +1646,8 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) dev_dbg(i2c_dev->dev, "<%s>: Timed out\n", __func__); stm32f7_i2c_disable_dma_req(i2c_dev); dmaengine_terminate_async(dma->chan_using); + dma_unmap_single(i2c_dev->dev, dma->dma_buf, dma->dma_len, + dma->dma_data_dir); f7_msg->result = -ETIMEDOUT; } } -- 2.43.0