BYTE_REG_BITS_ON  487 drivers/net/ethernet/via/via-rhine.c #define BYTE_REG_BITS_ON(x, p)      do { iowrite8((ioread8((p))|(x)), (p)); } while (0)
BYTE_REG_BITS_ON   35 drivers/net/ethernet/via/via-velocity.h #define BYTE_REG_BITS_ON(x,p)       do { writeb(readb((p))|(x),(p));} while (0)