From patchwork Tue Jan 4 18:24:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Valentin Caron X-Patchwork-Id: 12703774 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8259EC433F5 for ; Tue, 4 Jan 2022 18:27:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=MN3c+ZaKbhrQip1WQJ/VYKZU1YHTfEKuGXkI2g2BuWs=; b=gQQVRZ43Q2xRhI r3bvbES39Y4RmLOiWVp+pO64TSx064L69UpKyorWRydTaODTa6kmrWDcmVAviZHXQSioIhUUvwFgS 8Z2cDTOTz0F+DP6XNaH/MnEzKvi5UR1Yqmmnn1NlclDvQ6z45US8r/jm99hiiZj7+9l4PnNOfPwc5 Up2SSGKD3CkrTuwsSoY1t9rkrDVwHDjITnbFvrI91xAIowqQ7rsfiZf+U22wr5LOBJ3o2ypbEzvsz jQAxMsLUxu1aRFtpX2+AR/54wF8gutfVQMoLly2hGWfW/HYa3MjaIhWGgtmh1Wo1n/rUWE8qOXv0Q GyBRkV/KBBfl9EgQCHpQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n4oVZ-00CTx4-8d; Tue, 04 Jan 2022 18:26:05 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n4oVU-00CTuZ-4Z for linux-arm-kernel@lists.infradead.org; Tue, 04 Jan 2022 18:26:01 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 204HuB6Y001936; Tue, 4 Jan 2022 19:25:49 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=selector1; bh=x/btSr9lSMElxuR00liFCN3iHyPTwiFT9HmUB+y9nEg=; b=6P8WuFkRsYtiurarnviAL0U+BCJ/TbArqnMIEXeOk9jupAFpV/9EIbtvCzapuQ1oD46Z 35lIQW+mmWIY4bNfHuL6meomn2BvvaHgqDaAJMrCmjTmf0X+GOGInHdAeOgVXV5gjX4f HYlNZylTawuaJa51KHqeGaalr06M4Yuxav41SYoThUffC9aCac4fKVhnEi+XeI0695rq blhy94iVp9HNCiwLtWtiNcXbS8T81ERsp/AJqjs/fVtCO0AF7Q34aPBMESNzmm5i5prN DIPf4odn1tO1BojyR7O26lG7Od5PxPcr5ZbyXUGxkPM6hiEjcq85L+YU/4uzT7wMtHqJ GQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3dcu2ug2s8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 04 Jan 2022 19:25:49 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 98CF510002A; Tue, 4 Jan 2022 19:25:48 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node2.st.com [10.75.127.5]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 90CB524CB92; Tue, 4 Jan 2022 19:25:48 +0100 (CET) Received: from localhost (10.75.127.46) by SFHDAG2NODE2.st.com (10.75.127.5) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Tue, 4 Jan 2022 19:25:47 +0100 From: Valentin Caron To: Greg Kroah-Hartman CC: Jiri Slaby , Maxime Coquelin , Alexandre Torgue , Gerald Baeza , Erwan Le Ray , Valentin Caron , , , , Subject: [PATCH 0/4] Add improvements for STM32 USART DMA TX Date: Tue, 4 Jan 2022 19:24:41 +0100 Message-ID: <20220104182445.4195-1-valentin.caron@foss.st.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.46] X-ClientProxiedBy: SFHDAG1NODE3.st.com (10.75.127.3) To SFHDAG2NODE2.st.com (10.75.127.5) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-04_09,2022-01-04_01,2021-12-02_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220104_102600_570032_8F8E34BB X-CRM114-Status: GOOD ( 12.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This series reworks STM32 USART DMA TX state management, and fix flow control. Valentin Caron (4): serial: stm32: move tx dma terminate DMA to shutdown serial: stm32: rework TX DMA state condition serial: stm32: fix flow control transfer in DMA mode serial: stm32: correct loop for dma error handling drivers/tty/serial/stm32-usart.c | 74 ++++++++++++++++++++++++-------- drivers/tty/serial/stm32-usart.h | 2 +- 2 files changed, 56 insertions(+), 20 deletions(-)