I found 6 cases where there are more than 2 messages in the array. I didn't check how many cases where there are two messages but there is something other than one read and one write. Perhaps a reasonable option would be to use I2C_MSG_READ I2C_MSG_WRITE I2C_MSG_READ_OP I2C_MSG_WRITE_OP The last two are for the few cases where more flags are specified. As compared to the original proposal of I2C_MSG_OP, these keep the READ or WRITE idea in the macro name. The additional argument to the OP macros would be or'd with the read or write (nothing to do in this case) flags as appropriate. Mauro proposed INIT_I2C_READ_SUBADDR for the very common case where a message array has one read and one write. I think that putting one I2C_MSG_READ and one I2C_MSG_WRITE in this case is readable enough, and avoids the need to do something special for the cases that don't match the expectations of INIT_I2C_READ_SUBADDR. I propose not to do anything for the moment either for sizes or for message or buffer arrays that contain only one element. julia -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html