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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41AC6C433F5 for ; Mon, 24 Jan 2022 13:26:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240356AbiAXN0y (ORCPT ); Mon, 24 Jan 2022 08:26:54 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:50826 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229576AbiAXN0y (ORCPT ); Mon, 24 Jan 2022 08:26:54 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3524C61275 for ; Mon, 24 Jan 2022 13:26:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0AC58C340E7; Mon, 24 Jan 2022 13:26:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643030813; bh=/Qa6a+Itq3ZbiZrSQllDQrnBVHSTNmcLlTUGp86KUbI=; h=Subject:To:Cc:From:Date:From; b=kwd73z9AFbDJ9+7RCWULnpdnHGVihPiV8n2BNC1EQta6jJ63jMxpYjeoU2BOQl1aZ rwFlzJRX+jemjkHlXzQiWpYLDYo4IF9EH0LcwCsEBcgjWdKnw1450PBgd41m1sF77d ShuYH7PoqmuSsv9u+zN8v6gUUH9NO8f2hr6CCjAA= Subject: FAILED: patch "[PATCH] dmaengine: at_xdmac: Start transfer for cyclic channels in" failed to apply to 4.4-stable tree To: tudor.ambarus@microchip.com, vkoul@kernel.org Cc: From: Date: Mon, 24 Jan 2022 14:26:50 +0100 Message-ID: <164303081075134@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e6af9b05bec63cd4d1de2a33968cd0be2a91282a Mon Sep 17 00:00:00 2001 From: Tudor Ambarus Date: Wed, 15 Dec 2021 13:01:05 +0200 Subject: [PATCH] dmaengine: at_xdmac: Start transfer for cyclic channels in issue_pending Cyclic channels must too call issue_pending in order to start a transfer. Start the transfer in issue_pending regardless of the type of channel. This wrongly worked before, because in the past the transfer was started at tx_submit level when only a desc in the transfer list. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus Link: https://lore.kernel.org/r/20211215110115.191749-3-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index 4ff12b083136..c3d3e1270236 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -1778,11 +1778,9 @@ static void at_xdmac_issue_pending(struct dma_chan *chan) dev_dbg(chan2dev(&atchan->chan), "%s\n", __func__); - if (!at_xdmac_chan_is_cyclic(atchan)) { - spin_lock_irqsave(&atchan->lock, flags); - at_xdmac_advance_work(atchan); - spin_unlock_irqrestore(&atchan->lock, flags); - } + spin_lock_irqsave(&atchan->lock, flags); + at_xdmac_advance_work(atchan); + spin_unlock_irqrestore(&atchan->lock, flags); return; }