From: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx> Date: Fri, 29 Aug 2014 15:50:59 +0200 > +struct rx_desc { > + u16 buf_size; /* Buffer size */ > + u16 byte_cnt; /* Descriptor buffer byte count */ ... > + u16 byte_cnt; /* buffer byte count */ > + u16 l4i_chk; /* CPU provided TCP checksum */ I'm really suspcious that you're ordering these two members differently than that used by the mv643xx_eth driver. Looking at a diff of the two drivers, most of the transmit and recieve paths are largely the same. WRT. register differences, adding indirection to handle that is a no-brainer because the cost of the register access itself will absolutely dwarf whatever it costs to do an indirect call or whatever to implement the register access. I really think you should look into sharing code more seriously. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html