From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 339A2C433DF for ; Mon, 18 May 2020 18:24:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13E7C20643 for ; Mon, 18 May 2020 18:24:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589826280; bh=WnNstYCDUFAAXrsF4FoTE8vpCGvT/AX729NNv95uTrM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=hBldyGKcMB9Q8muzO6ihPac4Tym8tTHBbYHsh4lqbp42CNUoinrBoVnwzzxyVScd2 x1hsMrB4ZgHdkzZS7nQQOAS73FybpGWrefX7e0+4Z+KMgnaFcBBT2PL2+GyrG51PlB 96RbegOr121/2IeblpAHDeHULijIzwA8b9pARoIM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387713AbgERSYj (ORCPT ); Mon, 18 May 2020 14:24:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:48136 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729955AbgERRrl (ORCPT ); Mon, 18 May 2020 13:47:41 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1682420657; Mon, 18 May 2020 17:47:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589824060; bh=WnNstYCDUFAAXrsF4FoTE8vpCGvT/AX729NNv95uTrM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BwV2maedGC6nz+z76WmBUUmFn7G8ab+trAKh7AhBo/3Apil3JBYD38BSZ7fWgLK4Q fjNc/ZmjwqWQ+IFouiOF96A+ZsBQbrIAZpqXwJrjG7DrWiB87X6gjvfzeAtH4kaYnm pra2WETZkmQHJW1Qy7RlXmN10UYaERAyz/8V8QyE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lubomir Rintel , Vinod Koul , Sasha Levin Subject: [PATCH 4.14 056/114] dmaengine: mmp_tdma: Reset channel error on release Date: Mon, 18 May 2020 19:36:28 +0200 Message-Id: <20200518173513.332274606@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200518173503.033975649@linuxfoundation.org> References: <20200518173503.033975649@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lubomir Rintel [ Upstream commit 0c89446379218698189a47871336cb30286a7197 ] When a channel configuration fails, the status of the channel is set to DEV_ERROR so that an attempt to submit it fails. However, this status sticks until the heat end of the universe, making it impossible to recover from the error. Let's reset it when the channel is released so that further use of the channel with correct configuration is not impacted. Signed-off-by: Lubomir Rintel Link: https://lore.kernel.org/r/20200419164912.670973-5-lkundrak@v3.sk Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/mmp_tdma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index 13c68b6434ce2..15b4a44e60069 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -362,6 +362,8 @@ static void mmp_tdma_free_descriptor(struct mmp_tdma_chan *tdmac) gen_pool_free(gpool, (unsigned long)tdmac->desc_arr, size); tdmac->desc_arr = NULL; + if (tdmac->status == DMA_ERROR) + tdmac->status = DMA_COMPLETE; return; } -- 2.20.1