From patchwork Sun Jul 30 16:15:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gilad Ben-Yossef X-Patchwork-Id: 108958 Delivered-To: patch@linaro.org Received: by 10.182.45.195 with SMTP id p3csp2747724obm; Sun, 30 Jul 2017 09:15:52 -0700 (PDT) X-Received: by 10.99.95.76 with SMTP id t73mr13432641pgb.349.1501431352260; Sun, 30 Jul 2017 09:15:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1501431352; cv=none; d=google.com; s=arc-20160816; b=o2sO8+kPJ1Z9dRyt/PWcAFG0pmpAot0iLbL16/HfhoJ4Wdy5/SP/nbd1KdSCzyc4NB veCfBF8MUxY/jQaksGOOTjHZOGrZPAUFDj1bLVR4kjEvTODynMnKkvOdidcu5wmNvmeo 9NH+3Ygo9GhFktc2EMB9CW/QHGv88RFjcsLaO3mNIvOgngrjdwRp2hLsb+93babBAxAf /RK2P0C/DKrux2if410CP14ozOTQCh3Ufecj33DJuvbrDK5vgGlWJI51O2l3dpPhtonA KUGun3TBYDYYvLau5FHvr5xLIG2tEaTh52W9XS0N2eDHOU8NASVgc8vzYg2S2hsQjoWN RCTA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=owQNQ7qmwbA/GpUNkNyL9ArOK2aM9U1X8TBDcfL/oEc=; b=B+hGUyQtbyLM7NRJR0pHr/Tij2RCZWDLBxOBfozWd8TLHvA/9aslnDnV+SYP0rsjZW P/LwwC/kMR7EWa5IXwJFkOnb3Et3RIfJyf9lxWRXHEy/b8fHUpSIGKAMpwevdeeZ5IoH pKYbpHDB2BBbAHv11tdE4zep13N6VEz7xMgb/Ri5Lp8O38mEb3rSjIzlLHZn+CZGUvBS 1j4oaQnhwFoA1xySjr+hRb6LzZpcsghAR67BTgVvJRlRW/L5ZQxHX/EZIJgJ+yusI8NL 2DamfRw0+IoI3zaHOfoMCjn7kJiOsuEThMGCd4nRKcrzrL03By+EPOLS3cl3J2p6JXfI zXpg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 38si7458132pln.135.2017.07.30.09.15.51; Sun, 30 Jul 2017 09:15:52 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754288AbdG3QPf (ORCPT + 26 others); Sun, 30 Jul 2017 12:15:35 -0400 Received: from foss.arm.com ([217.140.101.70]:43028 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754248AbdG3QPb (ORCPT ); Sun, 30 Jul 2017 12:15:31 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5AB4E13D5; Sun, 30 Jul 2017 09:15:31 -0700 (PDT) Received: from localhost.localdomain (usa-sjc-mx-foss1.foss.arm.com [217.140.101.70]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5E65E3F540; Sun, 30 Jul 2017 09:15:29 -0700 (PDT) From: Gilad Ben-Yossef To: Greg Kroah-Hartman , linux-crypto@vger.kernel.org, driverdev-devel@linuxdriverproject.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Cc: Ofir Drang , Suniel Mahesh Subject: [PATCH v2 5/6] staging: ccree: Use platform_get_irq and devm_request_irq Date: Sun, 30 Jul 2017 19:15:07 +0300 Message-Id: <1501431309-27705-6-git-send-email-gilad@benyossef.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1501431309-27705-1-git-send-email-gilad@benyossef.com> References: <1501431309-27705-1-git-send-email-gilad@benyossef.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Suniel Mahesh It is recommended to use managed function devm_request_irq(), which simplifies driver cleanup paths and driver code. This patch does the following: (a) replace platform_get_resource(), request_irq() and corresponding error handling with platform_get_irq() and devm_request_irq(). (b) remove struct resource pointer(res_irq) in struct ssi_drvdata as it seems redundant. (c) change type of member irq in struct ssi_drvdata from unsigned int to int, as return type of platform_get_irq is int and can be used in error handling. (d) remove irq_registered variable from driver probe as it seems redundant. (e) free_irq is not required any more, devm_request_irq() free's it on driver detach. (f) adjust log messages accordingly and remove any blank lines. Signed-off-by: Suniel Mahesh Acked-by: Gilad Ben-Yossef --- drivers/staging/ccree/ssi_driver.c | 30 +++++++++--------------------- drivers/staging/ccree/ssi_driver.h | 3 +-- 2 files changed, 10 insertions(+), 23 deletions(-) -- 2.1.4 diff --git a/drivers/staging/ccree/ssi_driver.c b/drivers/staging/ccree/ssi_driver.c index 603eb03..c18e7e3 100644 --- a/drivers/staging/ccree/ssi_driver.c +++ b/drivers/staging/ccree/ssi_driver.c @@ -222,7 +222,6 @@ static int init_cc_resources(struct platform_device *plat_dev) { struct resource *req_mem_cc_regs = NULL; void __iomem *cc_base = NULL; - bool irq_registered = false; struct ssi_drvdata *new_drvdata; struct device *dev = &plat_dev->dev; struct device_node *np = dev->of_node; @@ -262,26 +261,22 @@ static int init_cc_resources(struct platform_device *plat_dev) &req_mem_cc_regs->start, new_drvdata->cc_base); cc_base = new_drvdata->cc_base; /* Then IRQ */ - new_drvdata->res_irq = platform_get_resource(plat_dev, IORESOURCE_IRQ, 0); - if (unlikely(!new_drvdata->res_irq)) { + new_drvdata->irq = platform_get_irq(plat_dev, 0); + if (new_drvdata->irq < 0) { SSI_LOG_ERR("Failed getting IRQ resource\n"); - rc = -ENODEV; + rc = new_drvdata->irq; goto init_cc_res_err; } - rc = request_irq(new_drvdata->res_irq->start, cc_isr, - IRQF_SHARED, "arm_cc7x", new_drvdata); - if (unlikely(rc != 0)) { - SSI_LOG_ERR("Could not register to interrupt %llu\n", - (unsigned long long)new_drvdata->res_irq->start); + rc = devm_request_irq(&plat_dev->dev, new_drvdata->irq, cc_isr, + IRQF_SHARED, "arm_cc7x", new_drvdata); + if (rc) { + SSI_LOG_ERR("Could not register to interrupt %d\n", + new_drvdata->irq); goto init_cc_res_err; } init_completion(&new_drvdata->icache_setup_completion); - irq_registered = true; - SSI_LOG_DEBUG("Registered to IRQ (%s) %llu\n", - new_drvdata->res_irq->name, - (unsigned long long)new_drvdata->res_irq->start); - + SSI_LOG_DEBUG("Registered to IRQ: %d\n", new_drvdata->irq); new_drvdata->plat_dev = plat_dev; rc = cc_clk_on(new_drvdata); @@ -410,10 +405,6 @@ static int init_cc_resources(struct platform_device *plat_dev) #ifdef ENABLE_CC_SYSFS ssi_sysfs_fini(); #endif - if (irq_registered) { - free_irq(new_drvdata->res_irq->start, new_drvdata); - new_drvdata->res_irq = NULL; - } dev_set_drvdata(&plat_dev->dev, NULL); } return rc; @@ -443,11 +434,8 @@ static void cleanup_cc_resources(struct platform_device *plat_dev) #ifdef ENABLE_CC_SYSFS ssi_sysfs_fini(); #endif - fini_cc_regs(drvdata); cc_clk_off(drvdata); - free_irq(drvdata->res_irq->start, drvdata); - drvdata->res_irq = NULL; dev_set_drvdata(&plat_dev->dev, NULL); } diff --git a/drivers/staging/ccree/ssi_driver.h b/drivers/staging/ccree/ssi_driver.h index 518c0bf..88ef370 100644 --- a/drivers/staging/ccree/ssi_driver.h +++ b/drivers/staging/ccree/ssi_driver.h @@ -128,9 +128,8 @@ struct ssi_crypto_req { * @fw_ver: SeP loaded firmware version */ struct ssi_drvdata { - struct resource *res_irq; void __iomem *cc_base; - unsigned int irq; + int irq; u32 irq_mask; u32 fw_ver; /* Calibration time of start/stop