On 02/18/2015 05:44, Geert Uytterhoeven wrote: > drivers/rtc/rtc-ds1685.c: In function ‘ds1685_rtc_read_alarm’: > drivers/rtc/rtc-ds1685.c:402: warning: comparison is always true due to limited range of data type > drivers/rtc/rtc-ds1685.c:409: warning: comparison is always true due to limited range of data type > drivers/rtc/rtc-ds1685.c:416: warning: comparison is always true due to limited range of data type > drivers/rtc/rtc-ds1685.c: In function ‘ds1685_rtc_set_alarm’: > drivers/rtc/rtc-ds1685.c:475: warning: comparison is always true due to limited range of data type > drivers/rtc/rtc-ds1685.c:478: warning: comparison is always true due to limited range of data type > drivers/rtc/rtc-ds1685.c:481: warning: comparison is always true due to limited range of data type > > u8 cannot contain a value larger than 0xff, hence drop the checks. > Wrapping the checks in unlikely() indicated some sense of humor, though ;-) > > Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Actually, I think I was operating in -pedantic mode the night I added those checks. Good catch, thanks! Acked-by: Joshua Kinard <kumba@xxxxxxxxxx> > --- > drivers/rtc/rtc-ds1685.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c > index 8c3bfcb115b78731..5077078a9305b9d5 100644 > --- a/drivers/rtc/rtc-ds1685.c > +++ b/drivers/rtc/rtc-ds1685.c > @@ -399,21 +399,21 @@ ds1685_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) > * of this RTC chip. We check for it anyways in case support is > * added in the future. > */ > - if (unlikely((seconds >= 0xc0) && (seconds <= 0xff))) > + if (unlikely(seconds >= 0xc0)) > alrm->time.tm_sec = -1; > else > alrm->time.tm_sec = ds1685_rtc_bcd2bin(rtc, seconds, > RTC_SECS_BCD_MASK, > RTC_SECS_BIN_MASK); > > - if (unlikely((minutes >= 0xc0) && (minutes <= 0xff))) > + if (unlikely(minutes >= 0xc0)) > alrm->time.tm_min = -1; > else > alrm->time.tm_min = ds1685_rtc_bcd2bin(rtc, minutes, > RTC_MINS_BCD_MASK, > RTC_MINS_BIN_MASK); > > - if (unlikely((hours >= 0xc0) && (hours <= 0xff))) > + if (unlikely(hours >= 0xc0)) > alrm->time.tm_hour = -1; > else > alrm->time.tm_hour = ds1685_rtc_bcd2bin(rtc, hours, > @@ -472,13 +472,13 @@ ds1685_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) > * field, and we only support four fields. We put the support > * here anyways for the future. > */ > - if (unlikely((seconds >= 0xc0) && (seconds <= 0xff))) > + if (unlikely(seconds >= 0xc0)) > seconds = 0xff; > > - if (unlikely((minutes >= 0xc0) && (minutes <= 0xff))) > + if (unlikely(minutes >= 0xc0)) > minutes = 0xff; > > - if (unlikely((hours >= 0xc0) && (hours <= 0xff))) > + if (unlikely(hours >= 0xc0)) > hours = 0xff; > > alrm->time.tm_mon = -1; >
