The patch titled
Subject: rtc: ds1685: remove superfluous checks for out-of-range u8 values
has been added to the -mm tree. Its filename is
rtc-ds1685-remove-superfluous-checks-for-out-of-range-u8-values.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/rtc-ds1685-remove-superfluous-checks-for-out-of-range-u8-values.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/rtc-ds1685-remove-superfluous-checks-for-out-of-range-u8-values.patch
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------------------------------------------------------
From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Subject: rtc: ds1685: remove superfluous checks for out-of-range u8 values
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>
Acked-by: Joshua Kinard <kumba@xxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-ds1685.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff -puN drivers/rtc/rtc-ds1685.c~rtc-ds1685-remove-superfluous-checks-for-out-of-range-u8-values drivers/rtc/rtc-ds1685.c
--- a/drivers/rtc/rtc-ds1685.c~rtc-ds1685-remove-superfluous-checks-for-out-of-range-u8-values
+++ a/drivers/rtc/rtc-ds1685.c
@@ -399,21 +399,21 @@ ds1685_rtc_read_alarm(struct device *dev
* 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,
* 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;
_
Patches currently in -mm which might be from geert@xxxxxxxxxxxxxx are
origin.patch
rtc-ds1685-remove-superfluous-checks-for-out-of-range-u8-values.patch
linux-next.patch
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