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=-16.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 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 5BDDCC4320A for ; Sun, 8 Aug 2021 17:06:13 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 2243260EC0 for ; Sun, 8 Aug 2021 17:06:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2243260EC0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6K5mDprxusDLpTxn5Im9qwAV52xVkUTprSiUQQZDslY=; b=t8XJYTMuBzvL7m IXNYVluh7Y/NUy/jRKNyCNxWRCgYqu9ugwz7lv59wTLr5qH0jSdzZqUu4JIzsoJVwjgIsrGyWD63u 13er4i3JVCGOP6nx7S7sjPtpzb2Qc5YZdr1FFlZGXHU5TeKr/IjlKUk1OQJRygbWzNLIXMmiQFcEV XTlNfpDx74uGG5QW3eHCQG1Sv/Jl8r75AkNHeYssFkySfOD+AAFDfPl0yWv7ftrva6Mk0g5EtQj7B Rzk3Re4kD9P0lZAKG/04cLlvxMUxnCyfJmBnoiMtdB6UoLncH75dwwU6nQmEnkIiDkFnRPM9VhR23 CPt/EwiIAaYw2ZGq7Okw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mCmCt-00G7jH-BL; Sun, 08 Aug 2021 17:03:27 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mCmCp-00G7iW-Je for linux-arm-kernel@lists.infradead.org; Sun, 08 Aug 2021 17:03:24 +0000 Received: from jic23-huawei (cpc108967-cmbg20-2-0-cust86.5-4.cable.virginm.net [81.101.6.87]) (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 65C2D60C3E; Sun, 8 Aug 2021 17:03:18 +0000 (UTC) Date: Sun, 8 Aug 2021 18:06:08 +0100 From: Jonathan Cameron To: William Breathitt Gray Cc: linux-stm32@st-md-mailman.stormreply.com, kernel@pengutronix.de, a.fatoum@pengutronix.de, kamel.bouhara@bootlin.com, gwendal@chromium.org, alexandre.belloni@bootlin.com, david@lechnology.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, syednwaris@gmail.com, patrick.havelange@essensium.com, fabrice.gasnier@st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, o.rempel@pengutronix.de, jarkko.nikula@linux.intel.com Subject: Re: [PATCH v14 01/17] counter: 104-quad-8: Return error when invalid mode during ceiling_write Message-ID: <20210808180608.2925961b@jic23-huawei> In-Reply-To: References: X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210808_100323_720866_D5C8052D X-CRM114-Status: GOOD ( 19.44 ) 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-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 3 Aug 2021 21:06:11 +0900 William Breathitt Gray wrote: > The 104-QUAD-8 only has two count modes where a ceiling value makes > sense: Range Limit and Modulo-N. Outside of these two modes, setting a > ceiling value is an invalid operation -- so let's report it as such by > returning -EINVAL. > > Fixes: fc069262261c ("counter: 104-quad-8: Add lock guards - generic interface") > Acked-by: Syed Nayyar Waris > Signed-off-by: William Breathitt Gray Applied to the togreg branch of iio.git and pushed out as testing for 0-day to have fun. As an aside, I got the warning: CHECK drivers/counter/104-quad-8.c drivers/counter/104-quad-8.c:58: warning: Function parameter or member 'lock' not described in 'quad8' Which might be nice to clean up, but has nothing much to do with this patch. J > --- > drivers/counter/104-quad-8.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/counter/104-quad-8.c b/drivers/counter/104-quad-8.c > index 09a9a77cce06..81f9642777fb 100644 > --- a/drivers/counter/104-quad-8.c > +++ b/drivers/counter/104-quad-8.c > @@ -715,12 +715,13 @@ static ssize_t quad8_count_ceiling_write(struct counter_device *counter, > case 1: > case 3: > quad8_preset_register_set(priv, count->id, ceiling); > - break; > + mutex_unlock(&priv->lock); > + return len; > } > > mutex_unlock(&priv->lock); > > - return len; > + return -EINVAL; > } > > static ssize_t quad8_count_preset_enable_read(struct counter_device *counter, _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel