delay.h 463 B

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  1. #ifndef __UM_DELAY_H
  2. #define __UM_DELAY_H
  3. /* Undefined on purpose */
  4. extern void __bad_udelay(void);
  5. extern void __bad_ndelay(void);
  6. extern void __udelay(unsigned long usecs);
  7. extern void __ndelay(unsigned long usecs);
  8. extern void __delay(unsigned long loops);
  9. #define udelay(n) ((__builtin_constant_p(n) && (n) > 20000) ? \
  10. __bad_udelay() : __udelay(n))
  11. #define ndelay(n) ((__builtin_constant_p(n) && (n) > 20000) ? \
  12. __bad_ndelay() : __ndelay(n))
  13. #endif