[Xen-devel] [PATCH 07/15] [swiotlb] In 'swiotlb_free' check iommu_sw pointer.

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

Previous to the usage of the iommu_sw pointer, we would check
if io_tlb_overflow_buffer was set and use that to determine whether
we had been called.

With the iommu_sw introduction, we just need to check whether that
pointer is not NULL.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 lib/swiotlb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 3c7bd4e..72c9abe 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -364,7 +364,7 @@ cleanup1:
 
 void __init swiotlb_free(void)
 {
-       if (!iommu_sw->overflow_buffer)
+       if (!iommu_sw)
                return;
 
        if (late_alloc) {
-- 
1.6.2.5


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