From patchwork Sat Dec 31 15:02:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 13086086 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 60B44C3DA7A for ; Sat, 31 Dec 2022 15:02:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231804AbiLaPCZ (ORCPT ); Sat, 31 Dec 2022 10:02:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229436AbiLaPCY (ORCPT ); Sat, 31 Dec 2022 10:02:24 -0500 Received: from smtp.smtpout.orange.fr (smtp-13.smtpout.orange.fr [80.12.242.13]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77D3B636A for ; Sat, 31 Dec 2022 07:02:22 -0800 (PST) Received: from pop-os.home ([86.243.100.34]) by smtp.orange.fr with ESMTPA id BdNLpRaYpxN58BdNLp4Muy; Sat, 31 Dec 2022 16:02:20 +0100 X-ME-Helo: pop-os.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sat, 31 Dec 2022 16:02:20 +0100 X-ME-IP: 86.243.100.34 From: Christophe JAILLET To: Sander Vanheule , Wim Van Sebroeck , Guenter Roeck Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , linux-watchdog@vger.kernel.org Subject: [PATCH] watchdog: realtek_otto: Use devm_clk_get_enabled() helper Date: Sat, 31 Dec 2022 16:02:17 +0100 Message-Id: <5e4255782fbb43d1b4b5cd03bd12d7a184497134.1672498920.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.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 and avoids the need of a dedicated function used with devm_add_action_or_reset(). Signed-off-by: Christophe JAILLET Acked-by: Sander Vanheule Reviewed-by: Guenter Roeck --- drivers/watchdog/realtek_otto_wdt.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/drivers/watchdog/realtek_otto_wdt.c b/drivers/watchdog/realtek_otto_wdt.c index 2a5298c5e8e4..2c30ddd574c5 100644 --- a/drivers/watchdog/realtek_otto_wdt.c +++ b/drivers/watchdog/realtek_otto_wdt.c @@ -235,27 +235,14 @@ static const struct watchdog_info otto_wdt_info = { WDIOF_PRETIMEOUT, }; -static void otto_wdt_clock_action(void *data) -{ - clk_disable_unprepare(data); -} - static int otto_wdt_probe_clk(struct otto_wdt_ctrl *ctrl) { - struct clk *clk = devm_clk_get(ctrl->dev, NULL); - int ret; + struct clk *clk; + clk = devm_clk_get_enabled(ctrl->dev, NULL); if (IS_ERR(clk)) return dev_err_probe(ctrl->dev, PTR_ERR(clk), "Failed to get clock\n"); - ret = clk_prepare_enable(clk); - if (ret) - return dev_err_probe(ctrl->dev, ret, "Failed to enable clock\n"); - - ret = devm_add_action_or_reset(ctrl->dev, otto_wdt_clock_action, clk); - if (ret) - return ret; - ctrl->clk_rate_khz = clk_get_rate(clk) / 1000; if (ctrl->clk_rate_khz == 0) return dev_err_probe(ctrl->dev, -ENXIO, "Failed to get clock rate\n");