GEM_DMA_SEC_TOP
#define GEM_DMA_SEC_MASK (GEM_DMA_SEC_TOP - 1)
if ((ts->tv_sec & (GEM_DMA_SEC_TOP >> 1)) &&
!(tsu.tv_sec & (GEM_DMA_SEC_TOP >> 1)))
ts->tv_sec -= GEM_DMA_SEC_TOP;