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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 21125C43603 for ; Mon, 16 Dec 2019 18:32:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E15AA206EC for ; Mon, 16 Dec 2019 18:32:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576521172; bh=7lH2J8jbJLx5db/U3NXg0SHa+gy/pg/2nY0NAcJSs5o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PfaRPxr2QvMJgZ6PIo89zgMOGOI7dZrZQFtTkrODJ1K+X28vGqd1XY0N53/Wnh207 ooSyTQJlGRfn44MZZbVqLA0ngMeVXMQghYTq4JBb2faWacuF5U+7tpiDvo6tbLWUZN Ztvcoc4oJ1vYAI3D3YmoDhLtqa19Rc/o206+EWik= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730504AbfLPSJu (ORCPT ); Mon, 16 Dec 2019 13:09:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:52472 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730500AbfLPSJt (ORCPT ); Mon, 16 Dec 2019 13:09:49 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 8518120700; Mon, 16 Dec 2019 18:09:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576519789; bh=7lH2J8jbJLx5db/U3NXg0SHa+gy/pg/2nY0NAcJSs5o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ImhPIFTm+kze106Up4R4Yjvs4lH99rL8R+XyoQO1ShWMTUKPJmybg/QlkrhuHa2I8 ziEr2FEt6UEdNZwmwMgoVibqEWCvGCr/wpBx7XTv+Bt0jG1UwESkx5VgObSC6Yq4R4 2vonsGD0DfcFvyTUU8zd0F4uZb9Ql7PmoOgS/NZk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Robert=20W=C3=B6rle?= , Beniamin Bia , Stable@vger.kernel.org, Jonathan Cameron Subject: [PATCH 5.3 032/180] iio: adc: ad7606: fix reading unnecessary data from device Date: Mon, 16 Dec 2019 18:47:52 +0100 Message-Id: <20191216174813.559785560@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191216174806.018988360@linuxfoundation.org> References: <20191216174806.018988360@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Beniamin Bia commit 341826a065660d1b77d89e6335b6095cd654271c upstream. When a conversion result is being read from ADC, the driver reads the number of channels + 1 because it thinks that IIO_CHAN_SOFT_TIMESTAMP is also a physical channel. This patch fixes this issue. Fixes: 2985a5d88455 ("staging: iio: adc: ad7606: Move out of staging") Reported-by: Robert Wörle Signed-off-by: Beniamin Bia Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/adc/ad7606.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -57,7 +57,7 @@ static int ad7606_reset(struct ad7606_st static int ad7606_read_samples(struct ad7606_state *st) { - unsigned int num = st->chip_info->num_channels; + unsigned int num = st->chip_info->num_channels - 1; u16 *data = st->data; int ret;