diff options
| -rw-r--r-- | include/asm-mips/delay.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-mips/delay.h b/include/asm-mips/delay.h index 85435a8..48d00cc 100644 --- a/include/asm-mips/delay.h +++ b/include/asm-mips/delay.h @@ -84,4 +84,13 @@ static inline void __udelay(unsigned long usecs, unsigned long lpj) #define udelay(usecs) __udelay((usecs),__udelay_val) +/* make sure "usecs *= ..." in udelay do not overflow. */ +#if HZ >= 1000 +#define MAX_UDELAY_MS 1 +#elif HZ <= 200 +#define MAX_UDELAY_MS 5 +#else +#define MAX_UDELAY_MS (1000 / HZ) +#endif + #endif /* _ASM_DELAY_H */ |