From patchwork Fri Aug 25 10:57:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13365439 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 7A327C3DA66 for ; Fri, 25 Aug 2023 10:59:04 +0000 (UTC) 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=lqnRbRr+WOnSc7Mi1e7Gk0+SWjzYAF5YD3hWPL9KoiE=; b=YBmNVkDNbxqHVG MH4Ad2jt70LMLh3kt41Pf4gcveLSO4HX/3E8qi4nQNNoataDbA8kd3/koCG3ue1jjhJX5dBk2tF0e +dknkzvWBwxCmEiVfDUQBRtpV6Dup92hACHEhJPGi/U+mhgST5w3q0/nhP02fMdk1W1gbU9/qXKhu /kz3ibhgmAW2h3U7vvQ6kKBzYjUqHvsgVc5pKVqafD0h/324lrn2PY8tvVGGjoSPMtPH4Xc7YKf1H ClrxlkYpDjZLCB/YjVcDb9nNNQRu7Ufqd/vRQ/UWMIY3OTQyDVgaDbQ2B0DxQ8puBCarKuMkdCz57 YA6+UNUzjf4UY/YFSQmA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qZUWR-004x3w-2m; Fri, 25 Aug 2023 10:58:35 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qZUW6-004wmF-1U; Fri, 25 Aug 2023 10:58:17 +0000 Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RXGzh0wdCztSJ2; Fri, 25 Aug 2023 18:54:24 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Fri, 25 Aug 2023 18:58:09 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , CC: Subject: [PATCH -next 3/4] iio: adc: spear_adc: Use devm_clk_get_enabled() helper function Date: Fri, 25 Aug 2023 18:57:45 +0800 Message-ID: <20230825105746.2999548-4-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230825105746.2999548-1-ruanjinjie@huawei.com> References: <20230825105746.2999548-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi500008.china.huawei.com (7.221.188.139) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230825_035814_721356_631EBFA7 X-CRM114-Status: GOOD ( 11.59 ) 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 The devm_clk_get_enabled() helper: - calls devm_clk_get() - calls clk_prepare_enable() and registers what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code. Signed-off-by: Jinjie Ruan --- drivers/iio/adc/spear_adc.c | 30 +++++++----------------------- 1 file changed, 7 insertions(+), 23 deletions(-) diff --git a/drivers/iio/adc/spear_adc.c b/drivers/iio/adc/spear_adc.c index ad54ef798109..cd7708aa95af 100644 --- a/drivers/iio/adc/spear_adc.c +++ b/drivers/iio/adc/spear_adc.c @@ -297,36 +297,27 @@ static int spear_adc_probe(struct platform_device *pdev) st->adc_base_spear3xx = (struct adc_regs_spear3xx __iomem *)st->adc_base_spear6xx; - st->clk = devm_clk_get(dev, NULL); + st->clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(st->clk)) { - dev_err(dev, "failed getting clock\n"); - return PTR_ERR(st->clk); - } - - ret = clk_prepare_enable(st->clk); - if (ret) { dev_err(dev, "failed enabling clock\n"); - return ret; + return PTR_ERR(st->clk); } irq = platform_get_irq(pdev, 0); - if (irq < 0) { - ret = irq; - goto errout2; - } + if (irq < 0) + return irq; ret = devm_request_irq(dev, irq, spear_adc_isr, 0, SPEAR_ADC_MOD_NAME, st); if (ret < 0) { dev_err(dev, "failed requesting interrupt\n"); - goto errout2; + return ret; } if (of_property_read_u32(np, "sampling-frequency", &st->sampling_freq)) { dev_err(dev, "sampling-frequency missing in DT\n"); - ret = -EINVAL; - goto errout2; + return -EINVAL; } /* @@ -355,24 +346,17 @@ static int spear_adc_probe(struct platform_device *pdev) ret = iio_device_register(indio_dev); if (ret) - goto errout2; + return ret; dev_info(dev, "SPEAR ADC driver loaded, IRQ %d\n", irq); return 0; - -errout2: - clk_disable_unprepare(st->clk); - return ret; } static int spear_adc_remove(struct platform_device *pdev) { struct iio_dev *indio_dev = platform_get_drvdata(pdev); - struct spear_adc_state *st = iio_priv(indio_dev); - iio_device_unregister(indio_dev); - clk_disable_unprepare(st->clk); return 0; }