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intel-iommu: fix build error with INTR_REMAP=y and DMAR=n 

This fix should be safe since iommu->agaw is only used in intel-iommu.c.
And this file is only compiled with DMAR=y.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Joerg Roedel 2009-01-03 23:56:27 +01:00 committed by David Woodhouse
parent 8e4921515c
commit 43f7392ba9
1 changed files with 3 additions and 1 deletions
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4
drivers/pci/dmar.c
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@ -491,7 +491,7 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
int map_size;
u32 ver;
static int iommu_allocated = 0;
int agaw;
int agaw = 0;
iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
if (!iommu)
@ -507,6 +507,7 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
iommu->cap = dmar_readq(iommu->reg + DMAR_CAP_REG);
iommu->ecap = dmar_readq(iommu->reg + DMAR_ECAP_REG);
#ifdef CONFIG_DMAR
agaw = iommu_calculate_agaw(iommu);
if (agaw < 0) {
printk(KERN_ERR
@ -514,6 +515,7 @@ int alloc_iommu(struct dmar_drhd_unit *drhd)
iommu->seq_id);
goto error;
}
#endif
iommu->agaw = agaw;
/* the registers might be more than one page */