Man page 9 : ktime_to_timespec_cond

ktime_to_timespec_cond - convert a ktime_t variable to timespec format only if the variable contains data

bool ktime_to_timespec_cond(const ktime_t  kt , struct timespec *  ts );

kt
    the ktime_t variable to convert

ts
    the timespec variable to store the result in

Returns true if there was a successful conversion, false if kt was 0.