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authorJoerg Roedel <joerg.roedel@amd.com>2012-07-19 13:42:54 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2012-07-19 13:42:54 +0200
commit2c9195e990297068d0f1f1bd8e2f1d09538009da (patch)
tree8a02929e11a856fba74b548c4ee8d0f1c9862e07 /drivers/iommu
parent2c13d47a1a7ee8808796016c617aef25fd1d1925 (diff)
iommu/amd: Fix hotplug with iommu=pt
This did not work because devices are not put into the pt_domain. Fix this. Cc: stable@vger.kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 625626391f2..3f365ab9f7c 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2254,6 +2254,18 @@ static int device_change_notifier(struct notifier_block *nb,
iommu_init_device(dev);
+ /*
+ * dev_data is still NULL and
+ * got initialized in iommu_init_device
+ */
+ dev_data = get_dev_data(dev);
+
+ if (iommu_pass_through || dev_data->iommu_v2) {
+ dev_data->passthrough = true;
+ attach_device(dev, pt_domain);
+ break;
+ }
+
domain = domain_for_device(dev);
/* allocate a protection domain if a device is added */
@@ -2271,10 +2283,7 @@ static int device_change_notifier(struct notifier_block *nb,
dev_data = get_dev_data(dev);
- if (!dev_data->passthrough)
- dev->archdata.dma_ops = &amd_iommu_dma_ops;
- else
- dev->archdata.dma_ops = &nommu_dma_ops;
+ dev->archdata.dma_ops = &amd_iommu_dma_ops;
break;
case BUS_NOTIFY_DEL_DEVICE: