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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 B3145C43219 for ; Fri, 26 Apr 2019 11:21:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E48F2089E for ; Fri, 26 Apr 2019 11:21:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556277719; bh=UTTAxG+Jg2VAeqcLpeFJKIEKlZAfzGGDG25z5H78rAM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=sG1yqamLhnixXORFEKAJzvz+OP1Empq7TUVmM1YbEEtagilM/pglZ8y/CAOr/yh6T ZvYP5xXxKC9qrUAco0MamW00wZBde2Ytk+AJjwrpsu5UQlawe3dcvevAUdbsWEoUKI b/iCPqkXNDhzIObV14gwI5GeLGgzClIYTLx6elPQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726247AbfDZLV6 (ORCPT ); Fri, 26 Apr 2019 07:21:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:59138 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725901AbfDZLV6 (ORCPT ); Fri, 26 Apr 2019 07:21:58 -0400 Received: from localhost (unknown [171.76.113.243]) (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 EA3C4206C1; Fri, 26 Apr 2019 11:21:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556277717; bh=UTTAxG+Jg2VAeqcLpeFJKIEKlZAfzGGDG25z5H78rAM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=t+6KkdQqRKDBxuQwEWECujbYKroyxMsUN1ZGCNldId/wYNBxex9hZZXZn2uJKXoRU 3vJAtRYLJFg7/3fvBkY2lkHFdXFIlVzUUk+NOrKPvpv1zWCvMWKhnNGVbVMj1QJPIS 7MAHS3/Z9G0fs1D+9HoIpeYne2/hwhOjoncJtc/g= Date: Fri, 26 Apr 2019 16:51:51 +0530 From: Vinod Koul To: Sugar Zhang Cc: heiko@sntech.de, broonie@kernel.org, linux-rockchip@lists.infradead.org, Dan Williams , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] dmaengine: pl330: _stop: clear interrupt status Message-ID: <20190426112151.GQ28103@vkoul-mobl> References: <1554289582-43695-1-git-send-email-sugar.zhang@rock-chips.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1554289582-43695-1-git-send-email-sugar.zhang@rock-chips.com> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03-04-19, 19:06, Sugar Zhang wrote: > This patch kill instructs the DMAC to immediately terminate > execution of a thread. and then clear the interrupt status, > at last, stop generating interrupts for DMA_SEV. to guarantee > the next dma start is clean. otherwise, one interrupt maybe leave > to next start and make some mistake. Applied, thanks -- ~Vinod