undefined symbol: __bad_udely (kernel modules)

["alfred hitch" <alfred.hitch@xxxxxxxxx>]

Hi,

I am trying to call udelay from my kernel module.
And I am getting this undefined symbol error.

I checked up the relavant code
in linux/include/asm-arm/delay.h

#define udelay(n)                                               \
       (__builtin_constant_p(n) ?                              \
         ((n) > (MAX_UDELAY_MS * 1000) ? __bad_udelay() :      \
                       __const_udelay((n) * 0x68dbul)) :       \
         __udelay(n))


Now, where are these __const_udelay and __bad_udelay defined ??

TIA,
Alfred

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