[Xen-changelog] [xen staging] iommu/arm: add missing return

[patchbot@xxxxxxx]

commit 7d75e66049437d2d88f70aaa1ac0deb0af952b4c
Author:     Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
AuthorDate: Thu May 30 15:02:28 2019 +0300
Commit:     Julien Grall <julien.grall@xxxxxxx>
CommitDate: Tue Jun 11 16:11:50 2019 +0100

    iommu/arm: add missing return
    
    In case iommu_ops have been already set, we should not update it.
    
    Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
    Signed-off-by: Andrii Anisov <andrii_anisov@xxxxxxxx>
    Acked-by: Julien Grall <julien.grall@xxxxxxx>
---
 xen/drivers/passthrough/arm/iommu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/drivers/passthrough/arm/iommu.c 
b/xen/drivers/passthrough/arm/iommu.c
index 325997b19f..2135233736 100644
--- a/xen/drivers/passthrough/arm/iommu.c
+++ b/xen/drivers/passthrough/arm/iommu.c
@@ -32,7 +32,10 @@ void __init iommu_set_ops(const struct iommu_ops *ops)
     BUG_ON(ops == NULL);
 
     if ( iommu_ops && iommu_ops != ops )
+    {
         printk("WARNING: Cannot set IOMMU ops, already set to a different 
value\n");
+        return;
+    }
 
     iommu_ops = ops;
 }
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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