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authormark gross <mgross@linux.intel.com>2008-05-12 13:41:57 -0700
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-05-13 09:51:54 -0700
commita7eb08c2a14f28cb652ea6ad1a8e2b8efc55fb9a (patch)
tree0c659e7f0d9af18bad57f705a7099f37157c245a /drivers/pci/quirks.c
parent34a65055e5e7304b3d6ad0f7542bf66308eae50a (diff)
downloadlinux-a7eb08c2a14f28cb652ea6ad1a8e2b8efc55fb9a.tar.bz2
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>
Diffstat (limited to 'drivers/pci/quirks.c')
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