linux-kernel - [PATCH V3 6/7] rtc: rv3029: fix set

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Message-Id: <2824c888ece3f99950adb38bfe18e7305bc5c410.1462268107.git.mylene.josserand@free-electrons.com>
Date:	Tue,  3 May 2016 11:54:37 +0200
From:	Mylène Josserand 
	<mylene.josserand@...e-electrons.com>
To:	alexandre.belloni@...e-electrons.com, rtc-linux@...glegroups.com
Cc:	Alessandro Zummo <a.zummo@...ertech.it>,
	linux-kernel@...r.kernel.org, mylene.josserand@...e-electrons.com
Subject: [PATCH V3 6/7] rtc: rv3029: fix set_time function

The bin2bcd function in set_time is uncorrect on weekdays as the
bit mask should be done at the end of arithmetic operations.

Signed-off-by: Mylène Josserand <mylene.josserand@...e-electrons.com>
---
 drivers/rtc/rtc-rv3029c2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c
index 88a0c18..916bbc2 100644
--- a/drivers/rtc/rtc-rv3029c2.c
+++ b/drivers/rtc/rtc-rv3029c2.c
@@ -502,7 +502,7 @@ static int rv3029_set_time(struct device *dev, struct rtc_time *tm)
 	regs[RV3029_W_HOURS - RV3029_W_SEC] = bin2bcd(tm->tm_hour);
 	regs[RV3029_W_DATE - RV3029_W_SEC] = bin2bcd(tm->tm_mday);
 	regs[RV3029_W_MONTHS - RV3029_W_SEC] = bin2bcd(tm->tm_mon + 1);
-	regs[RV3029_W_DAYS - RV3029_W_SEC] = bin2bcd((tm->tm_wday & 7) + 1);
+	regs[RV3029_W_DAYS - RV3029_W_SEC] = bin2bcd(tm->tm_wday + 1) & 0x7;
 	regs[RV3029_W_YEARS - RV3029_W_SEC] = bin2bcd(tm->tm_year - 100);
 
 	ret = rv3029_write_regs(dev, RV3029_W_SEC, regs,
-- 
2.8.0.rc3