From mboxrd@z Thu Jan 1 00:00:00 1970 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 0FF0DEE4996 for ; Tue, 22 Aug 2023 16:15:14 +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:Subject:CC:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Rfeg5plh59ZLwQRThb4CDI8IURN4vQsthZLA/hotSAU=; b=36626VRPgxlWnR zXDy5lLHtRq3sp8Oq1stL/k1lSTDDERyOJpIvi541iT9UDhFLtCVpDfwVXkrnQ+j/+Ire83IV6LZp fcyQhJFJMk5y970BhkbxlOa5p3uBSbtTFeD2y+VSr0ur5yOwhsGPy6kOf9NLyA2kZBgrxvHYt0RQR oOClJXDHrALIFmGpX8W+3ezJOcytLoLoIyetbD3yrktCBUMfdlzisg+20ZwtE6/4VoP2sF5MjWLAN zMQKWl2Bi0hxWHFlsnIoKwVciUfT4l9sj6puVP+w9EcwC3/pHmG5WALYmJNOEucl2n11Ri2uPMJsz 7XZa9/vMEHownawIQHFA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYU1g-00GRNv-0U; Tue, 22 Aug 2023 16:14:40 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYU1W-00GRKZ-1W; Tue, 22 Aug 2023 16:14:33 +0000 Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4RVZCN5qYyz6HJbJ; Wed, 23 Aug 2023 00:13:36 +0800 (CST) Received: from localhost (10.202.227.76) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Tue, 22 Aug 2023 17:14:16 +0100 Date: Tue, 22 Aug 2023 17:14:14 +0100 From: Jonathan Cameron To: Li Zetao CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH -next 24/25] spi: spl022: Use helper function devm_clk_get_enabled() Message-ID: <20230822171414.00003a69@Huawei.com> In-Reply-To: <20230822131237.1022815-25-lizetao1@huawei.com> References: <20230822131237.1022815-1-lizetao1@huawei.com> <20230822131237.1022815-25-lizetao1@huawei.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 X-Originating-IP: [10.202.227.76] X-ClientProxiedBy: lhrpeml500001.china.huawei.com (7.191.163.213) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230822_091430_818737_D11E00C5 X-CRM114-Status: GOOD ( 16.43 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 22 Aug 2023 21:12:36 +0800 Li Zetao wrote: > Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared > and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be > replaced by devm_clk_get_enabled() when driver enables (and possibly > prepares) the clocks for the whole lifetime of the device. Moreover, it is > no longer necessary to unprepare and disable the clocks explicitly. > Moreover, the label "err_no_clk_en" is no used, drop it for clean code. > > Signed-off-by: Li Zetao Hi. There is some odd formatting in the existing file, but cleaning that up should probably be a separate patch. Thanks, Jonathan > --- > drivers/spi/spi-pl022.c | 21 ++++++--------------- > 1 file changed, 6 insertions(+), 15 deletions(-) > > diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c > index 1af75eff26b6..468a7fea9091 100644 > --- a/drivers/spi/spi-pl022.c > +++ b/drivers/spi/spi-pl022.c > @@ -2168,19 +2168,13 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id) > dev_info(&adev->dev, "mapped registers from %pa to %p\n", > &adev->res.start, pl022->virtbase); > > - pl022->clk = devm_clk_get(&adev->dev, NULL); > + pl022->clk = devm_clk_get_enabled(&adev->dev, NULL); > if (IS_ERR(pl022->clk)) { > status = PTR_ERR(pl022->clk); > dev_err(&adev->dev, "could not retrieve SSP/SPI bus clock\n"); > goto err_no_clk; > } > > - status = clk_prepare_enable(pl022->clk); > - if (status) { > - dev_err(&adev->dev, "could not enable SSP/SPI bus clock\n"); > - goto err_no_clk_en; > - } > - > /* Initialize transfer pump */ > tasklet_init(&pl022->pump_transfers, pump_transfers, > (unsigned long)pl022); > @@ -2236,16 +2230,14 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id) > > return 0; > > - err_spi_register: > +err_spi_register: > if (platform_info->enable_dma) > pl022_dma_remove(pl022); > - err_no_irq: > - clk_disable_unprepare(pl022->clk); > - err_no_clk_en: > - err_no_clk: > - err_no_ioremap: > +err_no_irq: > +err_no_clk: > +err_no_ioremap: > amba_release_regions(adev); > - err_no_ioregion: > +err_no_ioregion: > spi_master_put(master); > return status; > } > @@ -2268,7 +2260,6 @@ pl022_remove(struct amba_device *adev) > if (pl022->master_info->enable_dma) > pl022_dma_remove(pl022); > > - clk_disable_unprepare(pl022->clk); > amba_release_regions(adev); > tasklet_disable(&pl022->pump_transfers); > } _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel