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Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
-rw-r--r--arch/x86/kernel/amd_iommu.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index fa5a147..0d20286 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1487,6 +1487,7 @@ static int __attach_device(struct device *dev,
struct protection_domain *domain)
{
struct iommu_dev_data *dev_data, *alias_data;
+ int ret;
dev_data = get_dev_data(dev);
alias_data = get_dev_data(dev_data->alias);
@@ -1498,13 +1499,14 @@ static int __attach_device(struct device *dev,
spin_lock(&domain->lock);
/* Some sanity checks */
+ ret = -EBUSY;
if (alias_data->domain != NULL &&
alias_data->domain != domain)
- return -EBUSY;
+ goto out_unlock;
if (dev_data->domain != NULL &&
dev_data->domain != domain)
- return -EBUSY;
+ goto out_unlock;
/* Do real assignment */
if (dev_data->alias != dev) {
@@ -1520,10 +1522,14 @@ static int __attach_device(struct device *dev,
atomic_inc(&dev_data->bind);
+ ret = 0;
+
+out_unlock:
+
/* ready */
spin_unlock(&domain->lock);
- return 0;
+ return ret;
}
/*
@@ -2324,10 +2330,6 @@ int __init amd_iommu_init_dma_ops(void)
iommu_detected = 1;
swiotlb = 0;
-#ifdef CONFIG_GART_IOMMU
- gart_iommu_aperture_disabled = 1;
- gart_iommu_aperture = 0;
-#endif
/* Make the driver finally visible to the drivers */
dma_ops = &amd_iommu_dma_ops;