From: mark gross <mgross@linux.intel.com>
Date: Mon, 12 May 2008 20:41:57 +0000 (-0700)
Subject: PCI: Make the intel-iommu_wait_op macro work when jiffies are not running
X-Git-Tag: v2.6.26-rc3~70^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7eb08c2a14f28cb652ea6ad1a8e2b8efc55fb9a;p=pandora-kernel.git

PCI: Make the intel-iommu_wait_op macro work when jiffies are not running

The following patch changes the intel-iommu.c code to use the TSC
instead of jiffies for detecting bad DMAR functionality.  Some systems
with bad bios's have been seen to hang in early boot spinning in the
IOMMU_WAIT_IO macro.  This patch will replace the infinite loop with a call to
panic.

Signed-off-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---

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