mdiobb_read_c22
res = mdiobb_read_c22(bus, phy, reg);
ret = mdiobb_read_c22(bus, phy, reg);
EXPORT_SYMBOL(mdiobb_read_c22);
bus->read = mdiobb_read_c22;
int mdiobb_read_c22(struct mii_bus *bus, int phy, int reg);