From patchwork Thu Apr 17 00:03:18 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Fernandes X-Patchwork-Id: 4004691 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9C3799F387 for ; Thu, 17 Apr 2014 00:06:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D0283202D1 for ; Thu, 17 Apr 2014 00:06:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE12120272 for ; Thu, 17 Apr 2014 00:06:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161589AbaDQAFz (ORCPT ); Wed, 16 Apr 2014 20:05:55 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:36302 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757052AbaDQADw (ORCPT ); Wed, 16 Apr 2014 20:03:52 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id s3H03VVK023100; Wed, 16 Apr 2014 19:03:31 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3H03VO1027502; Wed, 16 Apr 2014 19:03:31 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.174.1; Wed, 16 Apr 2014 19:03:30 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3H03UtT019378; Wed, 16 Apr 2014 19:03:30 -0500 Received: from joel-laptop.itg.ti.com (j-172-22-137-46.vpn.ti.com [172.22.137.46]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id s3H03Ut25139; Wed, 16 Apr 2014 19:03:30 -0500 (CDT) From: Joel Fernandes To: Tony Lindgren CC: Rajendra Nayak , Linux OMAP List , Linux ARM Kernel List , Linux Kernel Mailing List , Joel Fernandes Subject: [PATCH 8/9] ARM: OMAP: dmtimer: Add function to check for timer availability Date: Wed, 16 Apr 2014 19:03:18 -0500 Message-ID: <1397692999-7800-8-git-send-email-joelf@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1397692999-7800-1-git-send-email-joelf@ti.com> References: <1397692999-7800-1-git-send-email-joelf@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Simplify the check for a timer availability in atleast 4 places by providing a function to do the same. Signed-off-by: Joel Fernandes --- arch/arm/plat-omap/dmtimer.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c index 8a4a97c..7e806f9 100644 --- a/arch/arm/plat-omap/dmtimer.c +++ b/arch/arm/plat-omap/dmtimer.c @@ -704,14 +704,22 @@ int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask) } EXPORT_SYMBOL_GPL(omap_dm_timer_set_int_disable); +static int is_timer_available(struct omap_dm_timer *timer) +{ + if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { + pr_err("Timer not available or enabled.\n"); + WARN_ON(1); + return 0; + } + return 1; +} + unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer) { unsigned int l; - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { - pr_err("%s: timer not available or enabled.\n", __func__); + if (!is_timer_available(timer)) return 0; - } l = __raw_readl(timer->irq_stat); @@ -721,7 +729,7 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_read_status); int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value) { - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) + if (!is_timer_available(timer)) return -EINVAL; __omap_dm_timer_write_status(timer, value); @@ -732,10 +740,8 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_write_status); unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer) { - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { - pr_err("%s: timer not iavailable or enabled.\n", __func__); + if (!is_timer_available(timer)) return 0; - } return __omap_dm_timer_read_counter(timer, timer->posted); } @@ -743,10 +749,8 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_read_counter); int omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value) { - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { - pr_err("%s: timer not available or enabled.\n", __func__); + if (!is_timer_available(timer)) return -EINVAL; - } omap_dm_timer_write_reg(timer, OMAP_TIMER_COUNTER_REG, value);