iommu/vt-d: Remove dead code in device_notifier

This code only runs when action == BUS_NOTIFY_REMOVED_DEVICE,
so it can't be BUS_NOTIFY_DEL_DEVICE.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 7610121..40dfbc0 100644 (file)
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -4029,14 +4029,6 @@ static int device_notifier(struct notifier_block *nb,
        if (action != BUS_NOTIFY_REMOVED_DEVICE)
                return 0;
 
-       /*
-        * If the device is still attached to a device driver we can't
-        * tear down the domain yet as DMA mappings may still be in use.
-        * Wait for the BUS_NOTIFY_UNBOUND_DRIVER event to do that.
-        */
-       if (action == BUS_NOTIFY_DEL_DEVICE && dev->driver != NULL)
-               return 0;
-
        domain = find_domain(dev);
        if (!domain)
                return 0;