DMA_STATUS_RU     231 drivers/net/ethernet/calxeda/xgmac.c #define DMA_STATUS_RU		0x00000080	/* Receive Buffer Unavailable */
DMA_STATUS_RU     119 drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h #define DMA_STATUS_RU	0x00000080	/* Receive Buffer Unavailable */