From patchwork Wed Mar 24 20:12:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 408451 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, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 42B7DC433DB for ; Wed, 24 Mar 2021 20:13:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E7B0F619F2 for ; Wed, 24 Mar 2021 20:13:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237906AbhCXUM7 (ORCPT ); Wed, 24 Mar 2021 16:12:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237892AbhCXUMg (ORCPT ); Wed, 24 Mar 2021 16:12:36 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 482E3C061763 for ; Wed, 24 Mar 2021 13:12:36 -0700 (PDT) Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lP9ri-0000nh-Ot; Wed, 24 Mar 2021 21:12:30 +0100 Received: from ukl by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lP9rg-0001LT-Ke; Wed, 24 Mar 2021 21:12:28 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Michael Turquette , Stephen Boyd , Oleksij Rempel , Shawn Guo , Sascha Hauer , Fabio Estevam , NXP Linux Team Cc: linux-i2c@vger.kernel.org, Pengutronix Kernel Team , linux-clk@vger.kernel.org Subject: [PATCH] i2c: imx: Simplify using devm_clk_get_prepared() Date: Wed, 24 Mar 2021 21:12:23 +0100 Message-Id: <20210324201223.75921-1-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210301135053.1462168-1-u.kleine-koenig@pengutronix.de> References: <20210301135053.1462168-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::c0 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-i2c@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org devm_clk_get_prepared returns the clk already prepared and the automatically called cleanup cares for unpreparing. So simplify .probe and .remove accordingly. Signed-off-by: Uwe Kleine-König Reported-by: kernel test robot Reported-by: kernel test robot --- Hello, this simplification depends on a patch set that introduces devm_clk_get_prepared() and friends. The most recent version of this patch set can be found at https://lore.kernel.org/r/20210301135053.1462168-1-u.kleine-koenig@pengutronix.de Unfortunately I didn't get any feedback at all from the clk maintainers on it, so I try to make other maintainers aware of it in the expectation that the simplifications are welcome and so lure the clk maintainers to share their thoughts. Best regards Uwe drivers/i2c/busses/i2c-imx.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index b80fdc1f0092..c0e18a6caa38 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -1405,16 +1405,10 @@ static int i2c_imx_probe(struct platform_device *pdev) ACPI_COMPANION_SET(&i2c_imx->adapter.dev, ACPI_COMPANION(&pdev->dev)); /* Get I2C clock */ - i2c_imx->clk = devm_clk_get(&pdev->dev, NULL); + i2c_imx->clk = devm_clk_get_prepared(&pdev->dev, NULL); if (IS_ERR(i2c_imx->clk)) return dev_err_probe(&pdev->dev, PTR_ERR(i2c_imx->clk), - "can't get I2C clock\n"); - - ret = clk_prepare_enable(i2c_imx->clk); - if (ret) { - dev_err(&pdev->dev, "can't enable I2C clock, ret=%d\n", ret); - return ret; - } + "can't get prepared I2C clock\n"); /* Init queue */ init_waitqueue_head(&i2c_imx->queue); @@ -1517,7 +1511,6 @@ static int i2c_imx_remove(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq >= 0) free_irq(irq, i2c_imx); - clk_disable_unprepare(i2c_imx->clk); pm_runtime_put_noidle(&pdev->dev); pm_runtime_disable(&pdev->dev);