From: Ben Hutchings <bhutchings@solarflare.com>
Date: Wed, 12 Jun 2013 17:09:08 +0000 (+0100)
Subject: sfc: Improve test for IOMMU in use
X-Git-Tag: v3.11-rc1~64^2~151^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=636d73da27e83ce4882f8823f79063bb37980961;p=pandora-kernel.git

sfc: Improve test for IOMMU in use

The device::iommu_group field may be set even if no IOMMU is in use.
iommu_present() is still a better indicator, although it doesn't tell
us whether *our* device is affected.

Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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