From patchwork Fri Nov 10 10:07:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Raghavendra, Vignesh" X-Patchwork-Id: 743348 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 49C3CC4167B for ; Fri, 10 Nov 2023 18:18:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344772AbjKJSSS (ORCPT ); Fri, 10 Nov 2023 13:18:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235293AbjKJSRP (ORCPT ); Fri, 10 Nov 2023 13:17:15 -0500 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA7FF2704A; Fri, 10 Nov 2023 02:07:53 -0800 (PST) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 3AAA7Y5d015876; Fri, 10 Nov 2023 04:07:34 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1699610854; bh=TBhNcMdYIYfOE3nmWstbO+Hog8z7g7tkR/0hU9Urw7A=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=K4l61i8VdLOOk330swBJx8cC4Q5o++pyUe2BlospnkYgintcGzttYR8g6d3bnhe91 o5fiYberLk/9Iu+2Cb1C98oFbtKasXbwkZC2DD171dU0GgINueyIPbR+DKDuYrMvtx uAO34wvUIpA6hIcnxTGCdVD6yZJqMrk8SeFcrtQo= Received: from DLEE108.ent.ti.com (dlee108.ent.ti.com [157.170.170.38]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 3AAA7Yqj095147 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 10 Nov 2023 04:07:34 -0600 Received: from DLEE107.ent.ti.com (157.170.170.37) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Fri, 10 Nov 2023 04:07:34 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE107.ent.ti.com (157.170.170.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Fri, 10 Nov 2023 04:07:34 -0600 Received: from uda0132425.dhcp.ti.com (ileaxei01-snat.itg.ti.com [10.180.69.5]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 3AAA7S4q051776; Fri, 10 Nov 2023 04:07:32 -0600 From: Vignesh Raghavendra To: Wim Van Sebroeck , Guenter Roeck CC: Tero Kristo , , , Vignesh Raghavendra , , , Subject: [PATCH 1/2] watchdog: rti_wdt: Use managed APIs to handle runtime PM Date: Fri, 10 Nov 2023 15:37:25 +0530 Message-ID: <20231110100726.2930218-2-vigneshr@ti.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231110100726.2930218-1-vigneshr@ti.com> References: <20231110100726.2930218-1-vigneshr@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Switch to devm_pm_runtime_enable() to simplify error handling in driver probe. Signed-off-by: Vignesh Raghavendra --- drivers/watchdog/rti_wdt.c | 30 ++++++++---------------------- 1 file changed, 8 insertions(+), 22 deletions(-) diff --git a/drivers/watchdog/rti_wdt.c b/drivers/watchdog/rti_wdt.c index 8e1be7ba0103..163bdeb6929a 100644 --- a/drivers/watchdog/rti_wdt.c +++ b/drivers/watchdog/rti_wdt.c @@ -236,12 +236,8 @@ static int rti_wdt_probe(struct platform_device *pdev) if (wdt->freq < 32768) wdt->freq = wdt->freq * 9 / 10; - pm_runtime_enable(dev); - ret = pm_runtime_resume_and_get(dev); - if (ret < 0) { - pm_runtime_disable(&pdev->dev); - return dev_err_probe(dev, ret, "runtime pm failed\n"); - } + devm_pm_runtime_enable(dev); + pm_runtime_get_noresume(dev); platform_set_drvdata(pdev, wdt); @@ -260,7 +256,7 @@ static int rti_wdt_probe(struct platform_device *pdev) wdt->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(wdt->base)) { ret = PTR_ERR(wdt->base); - goto err_iomap; + return ret; } if (readl(wdt->base + RTIDWDCTRL) == WDENABLE_KEY) { @@ -286,7 +282,7 @@ static int rti_wdt_probe(struct platform_device *pdev) ret = rti_wdt_setup_hw_hb(wdd, wsize); if (ret) { dev_err(dev, "bad window size.\n"); - goto err_iomap; + return ret; } last_ping = heartbeat_ms - time_left_ms; @@ -301,7 +297,7 @@ static int rti_wdt_probe(struct platform_device *pdev) ret = of_address_to_resource(node, 0, &res); if (ret) { dev_err(dev, "No memory address assigned to the region.\n"); - goto err_iomap; + return ret; } /* @@ -312,15 +308,13 @@ static int rti_wdt_probe(struct platform_device *pdev) reserved_mem_size = resource_size(&res); if (reserved_mem_size < RESERVED_MEM_MIN_SIZE) { dev_err(dev, "The size of reserved memory is too small.\n"); - ret = -EINVAL; - goto err_iomap; + return -EINVAL; } vaddr = memremap(paddr, reserved_mem_size, MEMREMAP_WB); if (!vaddr) { dev_err(dev, "Failed to map memory-region.\n"); - ret = -ENOMEM; - goto err_iomap; + return -ENOMEM; } if (vaddr[0] == PON_REASON_SOF_NUM && @@ -337,19 +331,13 @@ static int rti_wdt_probe(struct platform_device *pdev) ret = watchdog_register_device(wdd); if (ret) { dev_err(dev, "cannot register watchdog device\n"); - goto err_iomap; + return ret; } if (last_ping) watchdog_set_last_hw_keepalive(wdd, last_ping); return 0; - -err_iomap: - pm_runtime_put_sync(&pdev->dev); - pm_runtime_disable(&pdev->dev); - - return ret; } static void rti_wdt_remove(struct platform_device *pdev) @@ -357,8 +345,6 @@ static void rti_wdt_remove(struct platform_device *pdev) struct rti_wdt_device *wdt = platform_get_drvdata(pdev); watchdog_unregister_device(&wdt->wdd); - pm_runtime_put(&pdev->dev); - pm_runtime_disable(&pdev->dev); } static const struct of_device_id rti_wdt_of_match[] = {