summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/iommu/intel-iommu.c42
1 files changed, 22 insertions, 20 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 2d7349a..24d3109 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2429,17 +2429,11 @@ static int iommu_domain_identity_map(struct dmar_domain *domain,
DMA_PTE_READ|DMA_PTE_WRITE);
}
-static int iommu_prepare_identity_map(struct device *dev,
- unsigned long long start,
- unsigned long long end)
+static int domain_prepare_identity_map(struct device *dev,
+ struct dmar_domain *domain,
+ unsigned long long start,
+ unsigned long long end)
{
- struct dmar_domain *domain;
- int ret;
-
- domain = get_domain_for_dev(dev, DEFAULT_DOMAIN_ADDRESS_WIDTH);
- if (!domain)
- return -ENOMEM;
-
/* For _hardware_ passthrough, don't bother. But for software
passthrough, we do it anyway -- it may indicate a memory
range which is reserved in E820, so which didn't get set
@@ -2459,8 +2453,7 @@ static int iommu_prepare_identity_map(struct device *dev,
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
- ret = -EIO;
- goto error;
+ return -EIO;
}
if (end >> agaw_to_width(domain->agaw)) {
@@ -2470,18 +2463,27 @@ static int iommu_prepare_identity_map(struct device *dev,
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
- ret = -EIO;
- goto error;
+ return -EIO;
}
- ret = iommu_domain_identity_map(domain, start, end);
- if (ret)
- goto error;
+ return iommu_domain_identity_map(domain, start, end);
+}
- return 0;
+static int iommu_prepare_identity_map(struct device *dev,
+ unsigned long long start,
+ unsigned long long end)
+{
+ struct dmar_domain *domain;
+ int ret;
+
+ domain = get_domain_for_dev(dev, DEFAULT_DOMAIN_ADDRESS_WIDTH);
+ if (!domain)
+ return -ENOMEM;
+
+ ret = domain_prepare_identity_map(dev, domain, start, end);
+ if (ret)
+ domain_exit(domain);
- error:
- domain_exit(domain);
return ret;
}
OpenPOWER on IntegriCloud