From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 31 Jul 2008 14:38:09 +0000 (+0100)
Subject: AMD IOMMU: spin_uinlock() on early return path.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14165^2~55
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=00a02b0a94cccf86406564034a8d22cf57e179ed;p=xen.git

AMD IOMMU: spin_uinlock() on early return path.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
---

diff --git a/xen/drivers/passthrough/amd/iommu_init.c b/xen/drivers/passthrough/amd/iommu_init.c
index 3bd91adf70..0a2081fe39 100644
--- a/xen/drivers/passthrough/amd/iommu_init.c
+++ b/xen/drivers/passthrough/amd/iommu_init.c
@@ -477,7 +477,10 @@ void __init enable_iommu(struct amd_iommu *iommu)
     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;