From patchwork Fri Sep 17 03:13:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Cai,Huoqing" X-Patchwork-Id: 12500923 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 A9619C433F5 for ; Fri, 17 Sep 2021 03:13:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8ABCF61056 for ; Fri, 17 Sep 2021 03:13:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243687AbhIQDOq (ORCPT ); Thu, 16 Sep 2021 23:14:46 -0400 Received: from mx22.baidu.com ([220.181.50.185]:47554 "EHLO baidu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S243628AbhIQDOo (ORCPT ); Thu, 16 Sep 2021 23:14:44 -0400 Received: from BJHW-Mail-Ex02.internal.baidu.com (unknown [10.127.64.12]) by Forcepoint Email with ESMTPS id 4B87161CC7627EA19D7D; Fri, 17 Sep 2021 11:13:20 +0800 (CST) Received: from BJHW-MAIL-EX27.internal.baidu.com (10.127.64.42) by BJHW-Mail-Ex02.internal.baidu.com (10.127.64.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Fri, 17 Sep 2021 11:13:20 +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; Fri, 17 Sep 2021 11:13:19 +0800 From: Cai Huoqing To: CC: Lee Jones , Daniel Thompson , Jingoo Han , , , Subject: [PATCH 2/2] backlight: l4f00242t03: Make use of the helper function dev_err_probe() Date: Fri, 17 Sep 2021 11:13:07 +0800 Message-ID: <20210917031308.17623-2-caihuoqing@baidu.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210917031308.17623-1-caihuoqing@baidu.com> References: <20210917031308.17623-1-caihuoqing@baidu.com> MIME-Version: 1.0 X-Originating-IP: [172.31.63.8] X-ClientProxiedBy: BJHW-Mail-Ex15.internal.baidu.com (10.127.64.38) To BJHW-MAIL-EX27.internal.baidu.com (10.127.64.42) Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.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/video/backlight/l4f00242t03.c | 34 ++++++++++----------------- 1 file changed, 13 insertions(+), 21 deletions(-) diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c index 46f97d1c3d21..8d81d4dec3c6 100644 --- a/drivers/video/backlight/l4f00242t03.c +++ b/drivers/video/backlight/l4f00242t03.c @@ -179,37 +179,29 @@ static int l4f00242t03_probe(struct spi_device *spi) priv->spi = spi; priv->reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(priv->reset)) { - dev_err(&spi->dev, - "Unable to get the lcd l4f00242t03 reset gpio.\n"); - return PTR_ERR(priv->reset); - } + if (IS_ERR(priv->reset)) + return dev_err_probe(&spi->dev, PTR_ERR(priv->reset), + "Unable to get the lcd l4f00242t03 reset gpio.\n"); gpiod_set_consumer_name(priv->reset, "lcd l4f00242t03 reset"); priv->enable = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW); - if (IS_ERR(priv->enable)) { - dev_err(&spi->dev, - "Unable to get the lcd l4f00242t03 data en gpio.\n"); - return PTR_ERR(priv->enable); - } + if (IS_ERR(priv->enable)) + return dev_err_probe(&spi->dev, PTR_ERR(priv->enable), + "Unable to get the lcd l4f00242t03 data en gpio.\n"); gpiod_set_consumer_name(priv->enable, "lcd l4f00242t03 data enable"); priv->io_reg = devm_regulator_get(&spi->dev, "vdd"); - if (IS_ERR(priv->io_reg)) { - dev_err(&spi->dev, "%s: Unable to get the IO regulator\n", - __func__); - return PTR_ERR(priv->io_reg); - } + if (IS_ERR(priv->io_reg)) + return dev_err_probe(&spi->dev, PTR_ERR(priv->io_reg), + "%s: Unable to get the IO regulator\n", __func__); priv->core_reg = devm_regulator_get(&spi->dev, "vcore"); - if (IS_ERR(priv->core_reg)) { - dev_err(&spi->dev, "%s: Unable to get the core regulator\n", - __func__); - return PTR_ERR(priv->core_reg); - } + if (IS_ERR(priv->core_reg)) + return dev_err_probe(&spi->dev, PTR_ERR(priv->core_reg), + "%s: Unable to get the core regulator\n", __func__); priv->ld = devm_lcd_device_register(&spi->dev, "l4f00242t03", &spi->dev, - priv, &l4f_ops); + priv, &l4f_ops); if (IS_ERR(priv->ld)) return PTR_ERR(priv->ld);