On Wednesday 13 July 2005 02:17, Michael S. Tsirkin wrote: > Quoting r. Tom Duffy <[EMAIL PROTECTED]>: > > These seem to be mostly coming from cpu_to_be*() and be*_to_cpu(). Is > > there a good rule of thumb for fixing these warnings? > > Yes. > Use attributes like __be32 and friends appropriately.
ITYM types. ;-) Tom, see, for example, drivers/infiniband/core/sysfs.c: ---------------------------------------------------------------------------- 313 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */ ---------------------------------------------------------------------------- drivers/infiniband/core/sysfs.c:313:32: warning: incorrect type in assignment (different base types) drivers/infiniband/core/sysfs.c:313:32: expected unsigned short [unsigned] [usertype] attr_id drivers/infiniband/core/sysfs.c:313:32: got restricted unsigned short [usertype] [force] <noident> ---------------------------------------------------------------------------- Grepping for attr_id in drivers/infiniband/ shows that: 1) in_mad->attr_id is set to IB_SMP_ATTR_NODE_INFO (network order) 2) mad->mad_hdr.attr_id is compared with IB_SMP_ATTR_PORT_INFO (network order) 3) *->mad_hdr.attr_id is set to big-endian value All this suggests that struct ib_mad_hdr::attr_id should be __be16 instead of u16. So, if attr_id is really something big-endian (infiniband people should know), convert it. If not (unlikely) all those cpu_to_be16() and htons() are bogus. HO-WE-VER, be careful and don't blindly shut up sparse. Its warnings exist to uncover real bugs. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
