From: Devesh Sharma <devesh.sharma@emulex.com>
Date: Fri, 5 Sep 2014 14:05:40 +0000 (+0530)
Subject: RDMA/ocrdma: Convert kernel VA to PA for mmap in user
X-Git-Tag: omap-for-v3.19/prcm-cleanup~33^2^5~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b76d38332271d5a0468ae5e465c5ea534c473c6;p=pandora-kernel.git

RDMA/ocrdma: Convert kernel VA to PA for mmap in user

In some platforms, when iommu is enabled, the bus address returned by
dma_alloc_coherent is different than the physical address.  ocrdma
should use physical address for mmap-ing the queue memory for the
applications.

This patch adds the use of virt_to_phys() at all such places where
kernel buffer is mapped to user process context.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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