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iommu/vt-d, trivial: simplify code with existing macros

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Simplify vt-d related code with existing macros and introduce a new
macro for_each_active_drhd_unit() to enumerate all active DRHD unit.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
This commit is contained in:
Jiang Liu
2014-01-06 14:18:18 +08:00
committed by Joerg Roedel
parent 2fe2c6025d
commit 7c9197791a
4 changed files with 29 additions and 68 deletions
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7
drivers/iommu/dmar.c
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@@ -1305,15 +1305,14 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
int __init enable_drhd_fault_handling(void)
{
struct dmar_drhd_unit *drhd;
struct intel_iommu *iommu;
/*
* Enable fault control interrupt.
*/
for_each_drhd_unit(drhd) {
int ret;
struct intel_iommu *iommu = drhd->iommu;
for_each_iommu(iommu, drhd) {
u32 fault_status;
ret = dmar_set_interrupt(iommu);
int ret = dmar_set_interrupt(iommu);
if (ret) {
pr_err("DRHD %Lx: failed to enable fault, interrupt, ret %d\n",