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rtc: convert LEAP_YEAR into an inline

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- the LEAP_YEAR macro is buggy - it references its arg multiple times.
  Fix this by turning it into a C function.

- give it a more approriate name

- Move it to rtc.h so that other .c files can use it, instead of copying it.

Cc: dann frazier <dannf@hp.com>
Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
Cc: stephane eranian <eranian@googlemail.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Morton 2009-03-31 15:24:48 -07:00 • committed by Linus Torvalds
parent 47367a3ba4
commit 78d89ef40c
2 changed files with 9 additions and 4 deletions
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6
include/linux/rtc.h
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@ -99,6 +99,7 @@ struct rtc_pll_info {
#ifdef __KERNEL__
#include <linux/types.h>
#include <linux/interrupt.h>
extern int rtc_month_days(unsigned int month, unsigned int year);
@ -232,6 +233,11 @@ int rtc_register(rtc_task_t *task);
int rtc_unregister(rtc_task_t *task);
int rtc_control(rtc_task_t *t, unsigned int cmd, unsigned long arg);
static inline bool is_leap_year(unsigned int year)
{
return (!(year % 4) && (year % 100)) || !(year % 400);
}
#endif /* __KERNEL__ */
#endif /* _LINUX_RTC_H_ */