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clocksource: make CLOCKSOURCE_MASK bullet-proof 

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: john stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Atsushi Nemoto 2008-01-30 13:30:01 +01:00 committed by Ingo Molnar
parent 186e3cb8a4
commit 1d76c26228
1 changed files with 1 additions and 1 deletions
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2
include/linux/clocksource.h
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@ -103,7 +103,7 @@ struct clocksource {
#define CLOCK_SOURCE_VALID_FOR_HRES 0x20
/* simplify initialization of mask field */
#define CLOCKSOURCE_MASK(bits) (cycle_t)(bits<64 ? ((1ULL<<bits)-1) : -1)
#define CLOCKSOURCE_MASK(bits) (cycle_t)((bits) < 64 ? ((1ULL<<(bits))-1) : -1)
/**
* clocksource_khz2mult - calculates mult from khz and shift