From patchwork Mon Jan 24 18:45:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 535602 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 D99CFC433F5 for ; Mon, 24 Jan 2022 21:06:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354310AbiAXVGv (ORCPT ); Mon, 24 Jan 2022 16:06:51 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:49116 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1392236AbiAXUuw (ORCPT ); Mon, 24 Jan 2022 15:50:52 -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 ams.source.kernel.org (Postfix) with ESMTPS id BA303B8105C; Mon, 24 Jan 2022 20:50:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CC255C340E5; Mon, 24 Jan 2022 20:50:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643057449; bh=W9rtOjKHBw6hBibNcxr0t32NfHgPu+2J1i1+BKiQQuI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WwiO04yHMLskbLkqfzZd69RPkHgJGP4AHHEFQ6umhTjnh3THRIg9cRRXFsRhAgKRw lJVDwbOO4kr/mIQ3xDNqD8kZnURZ0gEaBOlVhFcx1vCaHL8/Wp0FG8NrRVpCgxMBsQ f67iPWis4ZTvyBfzNc6Apb4bl/i83mOXB+jAiEVY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tudor Ambarus , Vinod Koul Subject: [PATCH 5.15 816/846] dmaengine: at_xdmac: Start transfer for cyclic channels in issue_pending Date: Mon, 24 Jan 2022 19:45:33 +0100 Message-Id: <20220124184129.057776609@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124184100.867127425@linuxfoundation.org> References: <20220124184100.867127425@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tudor Ambarus commit e6af9b05bec63cd4d1de2a33968cd0be2a91282a upstream. 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 Signed-off-by: Greg Kroah-Hartman --- drivers/dma/at_xdmac.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -1778,11 +1778,9 @@ static void at_xdmac_issue_pending(struc 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; }