From 9e1c0e43257b6df1ef012dd37c3f0f93b1ee47af Mon Sep 17 00:00:00 2001
From: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Date: Fri, 23 Sep 2011 13:16:39 -0400
Subject: [PATCH] IB/qib: Eliminate divide/mod in converting idx to egr buf
 pointer

The context init now saves a shift from rcvegrbufs_perchunk
rcvegrbufs_perchunk_shift using ilog2.   A BUG_ON() protects the
power of 2 assumption.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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