From patchwork Mon May 31 13:12:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 451157 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 F3832C47082 for ; Mon, 31 May 2021 13:51:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CED5361C55 for ; Mon, 31 May 2021 13:51:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231713AbhEaNxb (ORCPT ); Mon, 31 May 2021 09:53:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:55222 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231411AbhEaNva (ORCPT ); Mon, 31 May 2021 09:51:30 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 805D86186A; Mon, 31 May 2021 13:32:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1622467949; bh=sg8BA99lz8X4n17e5wbLXqVoyRIWCYyTeQ0xl9m3Ti0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ml2jmd3N50bwkwee2V80T6W0eXeJL0w075wmyfO1bB75mNXxN538fLvLmEW/CyDOb iXeFVJXKz0JcFHuPDIV5Ad2/WW4AysK/GC+qD26SThldFiU/0WHc4CL59KMhWUSCm8 5dtO8PR21gkIo73akZga5jPrGTO83GAuq8HYtWQk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lucas Stankus , Jonathan Cameron , Stable@vger.kernel.org Subject: [PATCH 5.10 060/252] staging: iio: cdc: ad7746: avoid overwrite of num_channels Date: Mon, 31 May 2021 15:12:05 +0200 Message-Id: <20210531130700.012141532@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210531130657.971257589@linuxfoundation.org> References: <20210531130657.971257589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Lucas Stankus commit 04f5b9f539ce314f758d919a14dc7a669f3b7838 upstream. AD7745 devices don't have the CIN2 pins and therefore can't handle related channels. Forcing the number of AD7746 channels may lead to enabling more channels than what the hardware actually supports. Avoid num_channels being overwritten after first assignment. Signed-off-by: Lucas Stankus Fixes: 83e416f458d53 ("staging: iio: adc: Replace, rewrite ad7745 from scratch.") Signed-off-by: Jonathan Cameron Cc: Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/cdc/ad7746.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -700,7 +700,6 @@ static int ad7746_probe(struct i2c_clien indio_dev->num_channels = ARRAY_SIZE(ad7746_channels); else indio_dev->num_channels = ARRAY_SIZE(ad7746_channels) - 2; - indio_dev->num_channels = ARRAY_SIZE(ad7746_channels); indio_dev->modes = INDIO_DIRECT_MODE; if (pdata) {