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=unavailable 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 A4BDBC43603 for ; Sat, 14 Dec 2019 22:03:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8353B20866 for ; Sat, 14 Dec 2019 22:03:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727400AbfLNWDj (ORCPT ); Sat, 14 Dec 2019 17:03:39 -0500 Received: from relay8-d.mail.gandi.net ([217.70.183.201]:34197 "EHLO relay8-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727135AbfLNWDI (ORCPT ); Sat, 14 Dec 2019 17:03:08 -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 relay8-d.mail.gandi.net (Postfix) with ESMTPSA id DF2111BF204; Sat, 14 Dec 2019 22:03:06 +0000 (UTC) From: Alexandre Belloni To: linux-rtc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Alexandre Belloni Subject: [PATCH 11/17] rtc: pcf85063: return meaningful value for RTC_VL_READ Date: Sat, 14 Dec 2019 23:02:53 +0100 Message-Id: <20191214220259.621996-12-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191214220259.621996-1-alexandre.belloni@bootlin.com> References: <20191214220259.621996-1-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 PCF85063_REG_SC_OS means the voltage dropped too low and data has been lost. Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-pcf85063.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index 2ddd95420a8c..1db17ba1fc64 100644 --- a/drivers/rtc/rtc-pcf85063.c +++ b/drivers/rtc/rtc-pcf85063.c @@ -289,15 +289,9 @@ static int pcf85063_ioctl(struct device *dev, unsigned int cmd, if (ret < 0) return ret; - if (status & PCF85063_REG_SC_OS) - dev_warn(&pcf85063->rtc->dev, "Voltage low, data loss detected.\n"); + status = status & PCF85063_REG_SC_OS ? RTC_VL_DATA_INVALID : 0; - status &= PCF85063_REG_SC_OS; - - if (copy_to_user((void __user *)arg, &status, sizeof(int))) - return -EFAULT; - - return 0; + return put_user(status, (unsigned int __user *)arg); default: return -ENOIOCTLCMD; -- 2.23.0