From patchwork Mon Oct 25 12:19:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Andr=C3=A9_Gustavo_Nakagomi_Lopez?= X-Patchwork-Id: 12581719 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BBD7C433F5 for ; Mon, 25 Oct 2021 12:19:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B8D760ED4 for ; Mon, 25 Oct 2021 12:19:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232960AbhJYMWS (ORCPT ); Mon, 25 Oct 2021 08:22:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232524AbhJYMWR (ORCPT ); Mon, 25 Oct 2021 08:22:17 -0400 Received: from mail-ua1-x92e.google.com (mail-ua1-x92e.google.com [IPv6:2607:f8b0:4864:20::92e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B0A2C061745 for ; Mon, 25 Oct 2021 05:19:55 -0700 (PDT) Received: by mail-ua1-x92e.google.com with SMTP id f24so2473725uav.12 for ; Mon, 25 Oct 2021 05:19:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=usp.br; s=usp-google; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :content-transfer-encoding; bh=zwmpU/4wUBOOjvtzhmHsdtzGo9J9noPc+g2NVU0zBxc=; b=zdb7e5wgfnKy23IF9N+nt68OhysvD7UjZ5zDYtdgZ0sivFULWY9/ugfSFeix0JXopS ziNYkrV3JAE2eoI6BDjbLHmoKFCYJhdkfryGUfZ1xdgLM9FzxTcSgi1+WnWe8gTYD0/8 fPAZq4D3xit+HpvCyLjEsQDxQerW6UcSkXtExYFNZwK6CFsRw+1soqeGeq5rhVfpmHv6 Rvpk8+miDk28wz2oH2daV0v4ZJJCP4OvMBslThVP8Jve9hlzk75Yi+hoyxdHZZ5ShbY8 OJGl02WdhcSzIg1ke8hQ3ndiRB8p/Cwj/fJrlQFasC0E9Befo3N/NnG2UY1gyauJ61V7 F5Mg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:content-transfer-encoding; bh=zwmpU/4wUBOOjvtzhmHsdtzGo9J9noPc+g2NVU0zBxc=; b=z3wka7xMTJJSKwUBZP/MkTUwy2C+ajbU2CUoVx5jlKWMUnAQbgyLrUncWBhxQRvnQK mcsLEHQG4lLxyRPJz3HfweByTB04bZz3MW/2yRVjgRWXar1QoNO4KU7AjUh4oS/79nYB +kcoUy4CqIPz1EePVb2A4BUpRTaLGTN+1f4lrpgqh6+3O0lw6qz22hLNGhlzw/3TXnRU P48bODD1eOobGvKC/GxpOCZg7dXx4Uxorx/H8JXjiQ+iwamsJ3aW/wvJuPduJ9zpTbXg +kT9P0X4RXVBMX4aRuP07dZalUOjb8a/AxufwHE1Kb2jW1lRWJSYRkeJyU+faBaxeeWZ kdTw== X-Gm-Message-State: AOAM5321xuGq/ljcuvDnE9bqbxHh7pvl3jnUEz8sj5bnJ1ioxg4dw953 bsnALBEwad/1gxLnYSBfPEeh0w== X-Google-Smtp-Source: ABdhPJwO0IHmRP033afGZOvNBH76vR6CJDWgHofTo24bK/FSoHv7O6QBDFOMfGnQpyjlLwXwYtmSGA== X-Received: by 2002:a67:b202:: with SMTP id b2mr14375566vsf.33.1635164394426; Mon, 25 Oct 2021 05:19:54 -0700 (PDT) Received: from Andryuu.br ([2804:431:c7fd:423:9dac:f639:6086:598]) by smtp.gmail.com with ESMTPSA id ba22sm848466vkb.7.2021.10.25.05.19.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Oct 2021 05:19:54 -0700 (PDT) Date: Mon, 25 Oct 2021 09:19:50 -0300 From: =?iso-8859-1?q?Andr=E9?= Gustavo Nakagomi Lopez To: jic23@kernel.org, lars@metafoo.de, vz@mleia.com Cc: linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] iio: adc: lpc18xx_adc: Reorder clk_get_rate function call Message-ID: MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org clk_get_rate is not guaranteed to work if called before clk_prepare_enable. Reorder clk_get_rate, so it's called after clk_prepare_enable and after devm_add_action_or_reset of lpc18xx_clk_disable. Suggested-by: Jonathan Cameron Acked-by: Vladimir Zapolskiy Signed-off-by: André Gustavo Nakagomi Lopez --- Change log V1 -> V2: -Fixed typo -Added appropriate Suggested-by and Acked-by tags drivers/iio/adc/lpc18xx_adc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/iio/adc/lpc18xx_adc.c b/drivers/iio/adc/lpc18xx_adc.c index ceefa4d793cf..ae9c9384f23e 100644 --- a/drivers/iio/adc/lpc18xx_adc.c +++ b/drivers/iio/adc/lpc18xx_adc.c @@ -157,9 +157,6 @@ static int lpc18xx_adc_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(adc->clk), "error getting clock\n"); - rate = clk_get_rate(adc->clk); - clkdiv = DIV_ROUND_UP(rate, LPC18XX_ADC_CLK_TARGET); - adc->vref = devm_regulator_get(&pdev->dev, "vref"); if (IS_ERR(adc->vref)) return dev_err_probe(&pdev->dev, PTR_ERR(adc->vref), @@ -192,6 +189,9 @@ static int lpc18xx_adc_probe(struct platform_device *pdev) if (ret) return ret; + rate = clk_get_rate(adc->clk); + clkdiv = DIV_ROUND_UP(rate, LPC18XX_ADC_CLK_TARGET); + adc->cr_reg = (clkdiv << LPC18XX_ADC_CR_CLKDIV_SHIFT) | LPC18XX_ADC_CR_PDN; writel(adc->cr_reg, adc->base + LPC18XX_ADC_CR);