From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2F35C43603 for ; Sat, 14 Dec 2019 22:10:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B174424125 for ; Sat, 14 Dec 2019 22:10:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727201AbfLNWKg (ORCPT ); Sat, 14 Dec 2019 17:10:36 -0500 Received: from relay2-d.mail.gandi.net ([217.70.183.194]:49537 "EHLO relay2-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727052AbfLNWK3 (ORCPT ); Sat, 14 Dec 2019 17:10:29 -0500 X-Originating-IP: 90.65.92.102 Received: from localhost (lfbn-lyo-1-1913-102.w90-65.abo.wanadoo.fr [90.65.92.102]) (Authenticated sender: alexandre.belloni@bootlin.com) by relay2-d.mail.gandi.net (Postfix) with ESMTPSA id 37A0740005; Sat, 14 Dec 2019 22:10:28 +0000 (UTC) From: Alexandre Belloni To: linux-rtc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Alexandre Belloni Subject: [PATCH 05/16] rtc: rv3029: avoid reading the status register uselessly Date: Sat, 14 Dec 2019 23:10:11 +0100 Message-Id: <20191214221022.622482-6-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191214221022.622482-1-alexandre.belloni@bootlin.com> References: <20191214221022.622482-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RV3029_STATUS is read in multiple location but its value is never used afterwards. Avoid this register access when not necessary. Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-rv3029c2.c | 26 -------------------------- 1 file changed, 26 deletions(-) diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c index 4e7514433b79..0e0a10cbfd67 100644 --- a/drivers/rtc/rtc-rv3029c2.c +++ b/drivers/rtc/rtc-rv3029c2.c @@ -333,16 +333,9 @@ static irqreturn_t rv3029_handle_irq(int irq, void *dev_id) static int rv3029_read_time(struct device *dev, struct rtc_time *tm) { - u8 buf[1]; int ret; u8 regs[RV3029_WATCH_SECTION_LEN] = { 0, }; - ret = rv3029_get_sr(dev, buf); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return -EIO; - } - ret = rv3029_read_regs(dev, RV3029_W_SEC, regs, RV3029_WATCH_SECTION_LEN); if (ret < 0) { @@ -380,12 +373,6 @@ static int rv3029_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) int ret; u8 regs[8], controls, flags; - ret = rv3029_get_sr(dev, regs); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return -EIO; - } - ret = rv3029_read_regs(dev, RV3029_A_SC, regs, RV3029_ALARM_SECTION_LEN); @@ -459,12 +446,6 @@ static int rv3029_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) if (tm->tm_year < 100) return -EINVAL; - ret = rv3029_get_sr(dev, regs); - if (ret < 0) { - dev_err(dev, "%s: reading SR failed\n", __func__); - return -EIO; - } - /* Activate all the alarms with AE_x bit */ regs[RV3029_A_SC - RV3029_A_SC] = bin2bcd(tm->tm_sec) | RV3029_A_AE_X; regs[RV3029_A_MN - RV3029_A_SC] = bin2bcd(tm->tm_min) | RV3029_A_AE_X; @@ -748,7 +729,6 @@ static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, { struct rv3029_data *rv3029; int rc = 0; - u8 buf[1]; rv3029 = devm_kzalloc(dev, sizeof(*rv3029), GFP_KERNEL); if (!rv3029) @@ -759,12 +739,6 @@ static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, rv3029->dev = dev; dev_set_drvdata(dev, rv3029); - rc = rv3029_get_sr(dev, buf); - if (rc < 0) { - dev_err(dev, "reading status failed\n"); - return rc; - } - rv3029_trickle_config(dev); rv3029_hwmon_register(dev, name); -- 2.23.0