From patchwork Wed May 12 14:43:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 436789 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D5E8C43616 for ; Wed, 12 May 2021 16:01:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 41A6C61E25 for ; Wed, 12 May 2021 16:01:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236206AbhELQCa (ORCPT ); Wed, 12 May 2021 12:02:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:40540 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238191AbhELP5b (ORCPT ); Wed, 12 May 2021 11:57:31 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 43FE161945; Wed, 12 May 2021 15:30:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620833446; bh=OHOzOBDV21nnOwDOWDSt1njwUBPU9OcEKDDqfLCjEPs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ds3E1qD1KFEcfbfYMHXqlEexT3EpjuWksKfa03JMJ6dstJIRDMRoXqGu1clf1HshQ p3cW+03F+7e84/vOCEoiNhRHIqnV2yLa9sn5IVdRiTh1lmqLn1z8sYGNupvMblKBFn alTT7bPuj49uVyiPNri2EYBILmiw6Sx1jjjsObOA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Erwan Le Ray , Sasha Levin Subject: [PATCH 5.11 154/601] serial: stm32: fix tx dma completion, release channel Date: Wed, 12 May 2021 16:43:51 +0200 Message-Id: <20210512144832.892073773@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144827.811958675@linuxfoundation.org> References: <20210512144827.811958675@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Erwan Le Ray [ Upstream commit fb4f2e04ac13e7c400e6b86afbbd314a5a2a7e8d ] This patch add a proper release of dma channels when completing dma tx. Fixes: 3489187204eb ("serial: stm32: adding dma support") Signed-off-by: Erwan Le Ray Link: https://lore.kernel.org/r/20210304162308.8984-9-erwan.leray@foss.st.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/stm32-usart.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 44522ddc7e6d..c2d87a8a8fe5 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -291,6 +291,7 @@ static void stm32_usart_tx_dma_complete(void *arg) struct stm32_port *stm32port = to_stm32_port(port); const struct stm32_usart_offsets *ofs = &stm32port->info->ofs; + dmaengine_terminate_async(stm32port->tx_ch); stm32_usart_clr_bits(port, ofs->cr3, USART_CR3_DMAT); stm32port->tx_dma_busy = false;