[openib-general][PATCH][RFC]: CMA IB implementation

[Roland Dreier]

    > /* 
    >  * approximately transforms microseconds to 4.096us*2^x* 
    > *  63(+8) is max return
    >  */
    > static inline u8 us_to_cmt(u32 us) {

This looks pretty bogus -- it only handles timeouts up to 2^32
microseconds, ie only 4 seconds.  But fortunately...

    >	timeout = us_to_cmt(cma_conn->qp_attr->timeout);

the only use of it is bogus as well.  You never use timeout again,
which is good because qp_attr->timeout is not in units of
microseconds; it's already in the IB logarithmic scale.

 - R.