Commit 93939967 authored May 14, 2015 by Alexandre Belloni

rtc: mt6397: fix build on some 32bits platforms

On some !ARM 32bits platforms, the following compilation error happens
because of the division on a 64bits value in mtk_rtc_read_time():

drivers/built-in.o: In function `mtk_rtc_read_time':
rtc-mt6397.c:(.text+0x265d13f): undefined reference to `__divdi3'
rtc-mt6397.c:(.text+0x265d150): undefined reference to `__moddi3'

Use div_s64() as done in rtc_time64_to_tm() to solve that.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Acked-by: Eddie Huang <eddie.huang@mediatek.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

parent 99c14e4d

drivers/rtc/rtc-mt6397.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -150,7 +150,7 @@ static int mtk_rtc_read_time(struct device dev, struct rtc_time tm)
		{
		time64_t time;
		struct mt6397_rtc *rtc = dev_get_drvdata(dev);
		int sec, ret;
		int days, sec, ret;

		do {
		ret = __mtk_rtc_read_time(rtc, tm, &sec);
		@@ -171,7 +171,8 @@ static int mtk_rtc_read_time(struct device dev, struct rtc_time tm)
		/* rtc_tm_to_time64 covert Gregorian date to seconds since
		* 01-01-1970 00:00:00, and this date is Thursday.
		*/
		tm->tm_wday = (time / 86400 + 4) % 7;
		days = div_s64(time, 86400);
		tm->tm_wday = (days + 4) % 7;

		exit:
		return ret;