__wait_for
__wait_for(if (new_requests_since_last_retire(dev_priv)) return,
#define _wait_for(COND, US, Wmin, Wmax) __wait_for(, (COND), (US), (Wmin), \
ret = __wait_for(read_ret = shim->read_ksv_ready(intel_dig_port,
ret = __wait_for(reg_value = I915_READ_NOTRACE(reg),