From patchwork Wed Nov 7 18:50:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Giuliano Belinassi X-Patchwork-Id: 10672897 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A34FF13A4 for ; Wed, 7 Nov 2018 18:50:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 92F402CC93 for ; Wed, 7 Nov 2018 18:50:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8724D2CCA1; Wed, 7 Nov 2018 18:50:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 286842CC93 for ; Wed, 7 Nov 2018 18:50:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726068AbeKHEV5 (ORCPT ); Wed, 7 Nov 2018 23:21:57 -0500 Received: from mail-qk1-f196.google.com ([209.85.222.196]:33762 "EHLO mail-qk1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726892AbeKHEV5 (ORCPT ); Wed, 7 Nov 2018 23:21:57 -0500 Received: by mail-qk1-f196.google.com with SMTP id o89so22278527qko.0; Wed, 07 Nov 2018 10:50:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=aUmnHASi5VAienY0hiyzBD+kiBDa50KR9QnFaLrop4c=; b=YeCywS48uAwP1TAyM+sgynRgPNVY7PsaSOZbwGfvynI7S6qo6K8T+TXclD1MQyQEH6 hvB7rsC7TLly8p4tZ8aT1V8i/v6SbWdchiwoGii4FTfNLMb/RZcCgbT49CR8pS+3WsBb 4gjOUxOeHXG9VPLMSjLYKvZvVUlTVzEPfaxNAFNRKj2WKM9+WwPKur7d7gVmL4NLrvEL uyEcBa3+7w/EzbWSmh3xssqi2aitnW7smkNA2r87yR9qS9I/ss1eo20T/yE2Ajz5KBFy xKY4DtaIfIkAmveAhHz0gK5jMtQpYI2AXC9sFxry/Wa0z3Tsbz92UQLGJAwK4ywmIe+f fbAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=aUmnHASi5VAienY0hiyzBD+kiBDa50KR9QnFaLrop4c=; b=S4BR39LllKx3Ie0guyEqVxa0xvFNXf5qjgtLGmCEbaif333+sKqfyE3KFMEEeP0hB6 4pb4po6aXnkvKmWt3HtsjQxB2KTn4p3xLTyFPvV/W5iTZR0kiIH1fBP7yExTanDqLelT zQRZcX5UcrVcE6m1ZNqmHcW5F7etWNJCcjCrpWXfPzeWCq01EAvCNMIWhk/qNMoVtfb6 wNQqMn1ipJws2ZxMGnuAITkB1gLLY6Pq3Z+qW76B/PJ6uyR1TotcPAehMPQl2i0K64Nk Yj/1jmLtkqHq7Wx9vywKxwBolsFMLufR9ygx/5vBmypF+LkJye6HnOy+16WjW2FgnDUl 4J8Q== X-Gm-Message-State: AGRZ1gJdBC+6yg5SNJ2lRjbYGDNLU4gvooxgUxyH1/aqwqDk8aYW5hk0 IBADOZeC6hBFpEqbneLWMcE= X-Google-Smtp-Source: AJdET5dTCnLaZv4QWPaBZyLT5W4OgPQqOEA5rJAa8A3fXxPw9W5+fF0YcPeUiM785QPEpYxKiQk8lw== X-Received: by 2002:a37:d1c5:: with SMTP id o66mr1356715qkl.293.1541616618385; Wed, 07 Nov 2018 10:50:18 -0800 (PST) Received: from smtp.gmail.com ([143.107.45.1]) by smtp.gmail.com with ESMTPSA id f30-v6sm1163673qtf.50.2018.11.07.10.50.12 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 07 Nov 2018 10:50:18 -0800 (PST) From: Giuliano Belinassi X-Google-Original-From: Giuliano Belinassi Date: Wed, 7 Nov 2018 16:50:10 -0200 To: lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org, knaack.h@gmx.de, pmeerw@pmeerw.net, gregkh@linuxfoundation.org, renatogeh@gmail.com Cc: linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, kernel-usp@googlegroups.com Subject: [PATCH 2/3] staging: iio: ad7780: check if ad778x before gain update Message-ID: <2a521e5f036eb74b684f368a6227509cac93fe0d.1541615978.git.giuliano.belinassi@usp.br> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Only the ad778x have the 'gain' status bit. Check it before updating. Signed-off-by: Giuliano Belinassi --- drivers/staging/iio/adc/ad7780.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c index 6e51bfdb076a..0a473aae52f2 100644 --- a/drivers/staging/iio/adc/ad7780.c +++ b/drivers/staging/iio/adc/ad7780.c @@ -114,10 +114,12 @@ static int ad7780_postprocess_sample(struct ad_sigma_delta *sigma_delta, ((raw_sample & chip_info->pattern_mask) != chip_info->pattern)) return -EIO; - if (raw_sample & AD7780_GAIN) - st->gain = 1; - else - st->gain = 128; + if (chip_info->is_ad778x) { + if (raw_sample & AD7780_GAIN) + st->gain = 1; + else + st->gain = 128; + } return 0; }