Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753306AbbHTXPz (ORCPT ); Thu, 20 Aug 2015 19:15:55 -0400 Received: from down.free-electrons.com ([37.187.137.238]:49078 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753110AbbHTXPx (ORCPT ); Thu, 20 Aug 2015 19:15:53 -0400 Date: Fri, 21 Aug 2015 01:15:51 +0200 From: Alexandre Belloni To: Joonyoung Shim , k.kozlowski@samsung.com Cc: rtc-linux@googlegroups.com, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, a.zummo@towertech.it, sbkim73@samsung.com Subject: Re: [PATCH] rtc: s5m: fix to update ctrl register Message-ID: <20150820231551.GE3769@piout.net> References: <1439455764-23526-1-git-send-email-jy0922.shim@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1439455764-23526-1-git-send-email-jy0922.shim@samsung.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1837 Lines: 54 Hi, On 13/08/2015 at 17:49:24 +0900, Joonyoung Shim wrote : > According to datasheet, the S2MPS13X and S2MPS14X should update write > buffer via setting WUDR bit to high after ctrl register is updated. > > If not, ALARM interrupt of rtc-s5m doesn't happen first time when i use > tools/testing/selftests/timers/rtctest.c test program and hour format is > used to 12 hour mode in Odroid-XU3 board. > >From what I understood, I should expect a v2 of tihat patch also setting RUDR, is that right? OR would you prefer that I apply that one and then fix RUDR in a following patch? > Signed-off-by: Joonyoung Shim > Cc: can you update the stable tag with the kernel version introducing the issue? > --- > drivers/rtc/rtc-s5m.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c > index 8c70d78..03828bb 100644 > --- a/drivers/rtc/rtc-s5m.c > +++ b/drivers/rtc/rtc-s5m.c > @@ -635,6 +635,18 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) > case S2MPS13X: > data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); > ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); > + if (ret < 0) > + break; > + > + ret = regmap_update_bits(info->regmap, > + info->regs->rtc_udr_update, > + info->regs->rtc_udr_mask, > + info->regs->rtc_udr_mask); Very small indentation issue here, it should be aligned with the open parenthesis. -- Alexandre Belloni, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/