From patchwork Mon Sep 26 14:20:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yingliang X-Patchwork-Id: 610374 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77DF2C6FA82 for ; Mon, 26 Sep 2022 15:31:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236368AbiIZPbG (ORCPT ); Mon, 26 Sep 2022 11:31:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236997AbiIZP3r (ORCPT ); Mon, 26 Sep 2022 11:29:47 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C7C3895DF for ; Mon, 26 Sep 2022 07:14:13 -0700 (PDT) Received: from dggpemm500023.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Mbl521P3szlVmD; Mon, 26 Sep 2022 22:09:58 +0800 (CST) Received: from dggpemm500007.china.huawei.com (7.185.36.183) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 26 Sep 2022 22:14:12 +0800 Received: from huawei.com (10.175.103.91) by dggpemm500007.china.huawei.com (7.185.36.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 26 Sep 2022 22:14:11 +0800 From: Yang Yingliang To: , CC: , , , Subject: [PATCH -next resend] backlight: ktd253: Switch to use dev_err_probe() helper Date: Mon, 26 Sep 2022 22:20:59 +0800 Message-ID: <20220926142059.2294282-1-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500007.china.huawei.com (7.185.36.183) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org In the probe path, dev_err() can be replaced with dev_err_probe() which will check if error code is -EPROBE_DEFER and prints the error name. It also sets the defer probe reason which can be checked later through debugfs. It's more simple in error path. Signed-off-by: Yang Yingliang Reviewed-by: Daniel Thompson Reviewed-by: Linus Walleij --- Resend for adding Sob. --- drivers/video/backlight/ktd253-backlight.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/video/backlight/ktd253-backlight.c b/drivers/video/backlight/ktd253-backlight.c index 37aa5a669530..d7d43454f64a 100644 --- a/drivers/video/backlight/ktd253-backlight.c +++ b/drivers/video/backlight/ktd253-backlight.c @@ -173,12 +173,9 @@ static int ktd253_backlight_probe(struct platform_device *pdev) } ktd253->gpiod = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW); - if (IS_ERR(ktd253->gpiod)) { - ret = PTR_ERR(ktd253->gpiod); - if (ret != -EPROBE_DEFER) - dev_err(dev, "gpio line missing or invalid.\n"); - return ret; - } + if (IS_ERR(ktd253->gpiod)) + return dev_err_probe(dev, PTR_ERR(ktd253->gpiod), + "gpio line missing or invalid.\n"); gpiod_set_consumer_name(ktd253->gpiod, dev_name(dev)); /* Bring backlight to a known off state */ msleep(KTD253_T_OFF_MS);