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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 F26FEC38A24 for ; Thu, 7 May 2020 14:31:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD0902083B for ; Thu, 7 May 2020 14:31:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588861896; bh=krDD4ztRtlpneNTbB+Wy4C8g2LMKXTuwNJpmlDzaQhw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xQU+pcu+SQE/r8bmjdd5/cyLCkAI9T2HZ76FTVn5G12hA7U1eBlIQYuhivzNpRmEe /rO5xQuFeRYPmrey/ptKn+oMm3jKP1gbs2vZlCXOu4Do7D/PGnFksvYYQSHkk3zBJB 3J6bMrYpOy86ydqYoc6d4pTC4Q34oLuser3NSsPM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728163AbgEGObf (ORCPT ); Thu, 7 May 2020 10:31:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:59222 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728743AbgEGOaX (ORCPT ); Thu, 7 May 2020 10:30:23 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BCEA520870; Thu, 7 May 2020 14:30:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588861823; bh=krDD4ztRtlpneNTbB+Wy4C8g2LMKXTuwNJpmlDzaQhw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BTWAEzNO1ijs+w1fX2iipVJJvHGxdVWnXQAvTfhbb6GenJGugfFDBdvggZyWnxVAG 2zdEiOUmt8YfWJ79OaeHisYKVw2oxl1Wvcb6g8QDzfphMkCweVHtEnoe8xf6IMtXDz s/KTTP6UEmGSI2iq/Agh9fmLplvMKcFD1gpLj19A= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Lubomir Rintel , Vinod Koul , Sasha Levin , dmaengine@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 4/9] dmaengine: mmp_tdma: Reset channel error on release Date: Thu, 7 May 2020 10:30:13 -0400 Message-Id: <20200507143018.27195-4-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200507143018.27195-1-sashal@kernel.org> References: <20200507143018.27195-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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 3df0422607d59..ac9aede1bfbec 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -364,6 +364,8 @@ 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