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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 86EEFC433EF for ; Mon, 4 Jul 2022 15:10:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:Subject:Cc:To:From :Date:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GL7FZwuFRDdlj5sbZH5ESXAboTd3Lw5EXjP9ewdes6c=; b=BCv+VIOqBL5NZw05nh3Vre7ZIk 5OOFnDLh5OF3UTJokpwGl4NpDhqBBjo35yWE9IW4K2CY/8rMIw4hn+7mVw/0o0Si8BfikqQ7P40pV 4T24PdzKyvmEHmlPyp2+Xs2JcpxRshP4VP1+DepD2Ljf6XTwDizXVC4ghrHTgacl7ExEb+RRv4kxA JkxbIJsVPIaIKiKqjNgKWaAcVD/LTXV4uvzCyOMPC74vPtbyClYi1+8kzyiWrprfyi5ngk+4FjM0b dynJDzrgshULbClhAR+0ddyCzNZzTaK9ectnj/acsBhh12fm/4Fl/YrephvEYQEJygo3QoZ9v/GX1 qEVFanMQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o8NhI-009cPI-0g; Mon, 04 Jul 2022 15:09:12 +0000 Received: from ssl.serverraum.org ([176.9.125.105]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o8NhE-009cKl-7M for linux-arm-kernel@lists.infradead.org; Mon, 04 Jul 2022 15:09:09 +0000 Received: from ssl.serverraum.org (web.serverraum.org [172.16.0.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 03C6F22175; Mon, 4 Jul 2022 17:09:03 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1656947343; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wtM/v1+4WZK9BC0YUHLMqA8epAr6ytcz/wbNfrpgB9Y=; b=Eng3kpt8EktgSOgpk0IO/2kVPXBCuteNg7Sjgf+45R7PTMVdieA9dsLgnNrJeKKIOJFF5j CCLzh52VTd29sCPnN1C0Vb/VwIyV6mFaYF9n5TkvkQW7fLhPcJvPz/rNhT8qEO/8v5aIIK YowBALSMawxasc2T5heaRbNGSbep1k8= MIME-Version: 1.0 Date: Mon, 04 Jul 2022 17:09:02 +0200 From: Michael Walle To: Ludovic Desroches , Tudor Ambarus , Vinod Koul , Nicolas Ferre Cc: linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] dmaengine: at_xdma: handle errors of at_xdmac_alloc_desc() correctly In-Reply-To: <20220526135111.1470926-1-michael@walle.cc> References: <20220526135111.1470926-1-michael@walle.cc> User-Agent: Roundcube Webmail/1.4.13 Message-ID: <4060a926aba97cc1750d2964932ab40d@walle.cc> X-Sender: michael@walle.cc X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220704_080908_443877_FEC49B80 X-CRM114-Status: UNSURE ( 6.89 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Am 2022-05-26 15:51, schrieb Michael Walle: > It seems that it is valid to have less than the requested number of > descriptors. But what is not valid and leads to subsequent errors is to > have zero descriptors. In that case, abort the probing. > > Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel > eXtended DMA Controller driver") > Signed-off-by: Michael Walle ping :) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel