[Xen-changelog] [xen-unstable] AMD IOMMU: spin_uinlock() on early return path.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1217515089 -3600
# Node ID 782c6bddf9be411d7ec30e4fd074d52bf508e320
# Parent  39f2dfacbcadc44a55fcae0678ec0d2f81f4ba61
AMD IOMMU: spin_uinlock() on early return path.
Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
---
 xen/drivers/passthrough/amd/iommu_init.c |    3 +++
 1 files changed, 3 insertions(+)

diff -r 39f2dfacbcad -r 782c6bddf9be xen/drivers/passthrough/amd/iommu_init.c
--- a/xen/drivers/passthrough/amd/iommu_init.c  Thu Jul 31 15:34:58 2008 +0100
+++ b/xen/drivers/passthrough/amd/iommu_init.c  Thu Jul 31 15:38:09 2008 +0100
@@ -477,7 +477,10 @@ void __init enable_iommu(struct amd_iomm
     spin_lock_irqsave(&iommu->lock, flags);
 
     if ( iommu->enabled )
+    {
+        spin_unlock_irqrestore(&iommu->lock, flags); 
         return;
+    }
 
     iommu->dev_table.alloc_size = device_table.alloc_size;
     iommu->dev_table.entries = device_table.entries;

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