From patchwork Mon Sep 27 08:26:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Cai,Huoqing" X-Patchwork-Id: 12519409 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0011FC433EF for ; Mon, 27 Sep 2021 08:29:19 +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 C273A60F94 for ; Mon, 27 Sep 2021 08:29:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org C273A60F94 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baidu.com 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:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5jzt5klHiZToeMWwSYxsPRm6Qt565ICdt1ZGh7vRkMg=; b=t31ph/r0G//NE1 24C8ekVIWwAWlttPbTDs6bhKj34BoiXYr8/EgsyOoia44fI/b4UUzvjcSVfds4BNXPshcTJC4QBu/ BlD65Ej5LV73hSB5QURKKTTYW55vn0nXqzaSsdBHb9Oj/uh470WJjijwS1YUlexS9xw8+3qW7OEkt RlspQXp2wZfyVSW734/6IVNlguy5XYV+3ewBgfWOzyYVw5IgR/0cGoEO/eHzscLoCZBDvpYKc4QYn +jHyaj8enQlqKAR1q9cKqtWYO+dNAKOodxNw9Xln+q0Ro3SEjiB+40/0UArykjQVUCjj12sJQwBcR TtA3rjKQh/jAAdBRn+rg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mUlzB-0020ly-Cy; Mon, 27 Sep 2021 08:27:41 +0000 Received: from mx22.baidu.com ([220.181.50.185] helo=baidu.com) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mUly7-0020PL-46 for linux-arm-kernel@lists.infradead.org; Mon, 27 Sep 2021 08:26:36 +0000 Received: from BC-Mail-Ex12.internal.baidu.com (unknown [172.31.51.52]) by Forcepoint Email with ESMTPS id 2257EEC0622210DDD983; Mon, 27 Sep 2021 16:26:34 +0800 (CST) Received: from BJHW-MAIL-EX27.internal.baidu.com (10.127.64.42) by BC-Mail-Ex12.internal.baidu.com (172.31.51.52) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2242.12; Mon, 27 Sep 2021 16:26:33 +0800 Received: from LAPTOP-UKSR4ENP.internal.baidu.com (172.31.63.8) by BJHW-MAIL-EX27.internal.baidu.com (10.127.64.42) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Mon, 27 Sep 2021 16:26:32 +0800 From: Cai Huoqing To: CC: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , "Vladimir Zapolskiy" , Marcus Folkesson , Maxime Coquelin , Alexandre Torgue , , , , Subject: [PATCH 6/8] iio: dac: mcp4922: Make use of the helper function dev_err_probe() Date: Mon, 27 Sep 2021 16:26:05 +0800 Message-ID: <20210927082608.859-6-caihuoqing@baidu.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210927082608.859-1-caihuoqing@baidu.com> References: <20210927082608.859-1-caihuoqing@baidu.com> MIME-Version: 1.0 X-Originating-IP: [172.31.63.8] X-ClientProxiedBy: BC-Mail-Ex15.internal.baidu.com (172.31.51.55) To BJHW-MAIL-EX27.internal.baidu.com (10.127.64.42) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210927_012635_391019_E1F11C5E X-CRM114-Status: UNSURE ( 9.43 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When possible use dev_err_probe help to properly deal with the PROBE_DEFER error, the benefit is that DEFER issue will be logged in the devices_deferred debugfs file. Using dev_err_probe() can reduce code size, and the error value gets printed. Signed-off-by: Cai Huoqing --- drivers/iio/dac/mcp4922.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/dac/mcp4922.c b/drivers/iio/dac/mcp4922.c index c4e430b4050e..0ae414ee1716 100644 --- a/drivers/iio/dac/mcp4922.c +++ b/drivers/iio/dac/mcp4922.c @@ -130,10 +130,9 @@ static int mcp4922_probe(struct spi_device *spi) state = iio_priv(indio_dev); state->spi = spi; state->vref_reg = devm_regulator_get(&spi->dev, "vref"); - if (IS_ERR(state->vref_reg)) { - dev_err(&spi->dev, "Vref regulator not specified\n"); - return PTR_ERR(state->vref_reg); - } + if (IS_ERR(state->vref_reg)) + return dev_err_probe(&spi->dev, PTR_ERR(state->vref_reg), + "Vref regulator not specified\n"); ret = regulator_enable(state->vref_reg); if (ret) {