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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH, USER_AGENT_MUTT 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 495C1C282CE for ; Tue, 4 Jun 2019 12:19:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2306724AD6 for ; Tue, 4 Jun 2019 12:19:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559650769; bh=5mDhuWW9AhtrNyi3+kKWCarCqtJksnkX7XioSL9hjMQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=CPrXn2rslQyIONQ6yGqkqDtsD/da3rSHRJoR+hfDkVQV+tdau4YemipVievijaaNx RixIuVtGtxTjkLi5j30YuQgrYNlih/PNDwhlX8UBuIkKnuVdOWQ5UFH1tprpg8v5Fn MwxUHwoFuXQaaLOToNxMVydts++gacx8CgcUY454= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727447AbfFDMTZ (ORCPT ); Tue, 4 Jun 2019 08:19:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:50728 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727377AbfFDMTY (ORCPT ); Tue, 4 Jun 2019 08:19:24 -0400 Received: from localhost (unknown [117.99.94.117]) (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 8EC95247F9; Tue, 4 Jun 2019 12:19:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559650764; bh=5mDhuWW9AhtrNyi3+kKWCarCqtJksnkX7XioSL9hjMQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vHCMyNsNztRQezlvHEmUk9aqrMCdYbMy0Mdyfos6pISt0WgXVGPcBTDQqAEruEflY BsWnL1h5qIH90UBz4tpmenjYSZYYgFGgYl+y4rxhPf1geZsPdf6rX2Ld0JToHN7uvP FaK2332k1zX7wk9PeLuoCWFNj79Ebqi+LQ1OZNeU= Date: Tue, 4 Jun 2019 17:46:16 +0530 From: Vinod Koul To: Dmitry Osipenko Cc: Laxman Dewangan , Thierry Reding , Jonathan Hunter , Ben Dooks , dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1] dmaengine: tegra-apb: Error out if DMA_PREP_INTERRUPT flag is unset Message-ID: <20190604121616.GX15118@vkoul-mobl> References: <20190529214355.15339-1-digetx@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190529214355.15339-1-digetx@gmail.com> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org On 30-05-19, 00:43, Dmitry Osipenko wrote: > Apparently driver was never tested with DMA_PREP_INTERRUPT flag being > unset since it completely disables interrupt handling instead of skipping > the callbacks invocations, hence putting channel into unusable state. > > The flag is always set by all of kernel drivers that use APB DMA, so let's > error out in otherwise case for consistency. It won't be difficult to > support that case properly if ever will be needed. Applied, thanks -- ~Vinod