IB: Fix ib_dma_alloc_coherent() wrapper

The ib_dma_alloc_coherent() wrapper uses a u64* for the dma_handle
parameter, unlike dma_alloc_coherent, which uses dma_addr_t*.  This
means that we need a temporary variable to handle the case when
ib_dma_alloc_coherent() just falls through directly to
dma_alloc_coherent() on architectures where sizeof u64 != sizeof
dma_addr_t.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 3c2e10574b23..0bfa3328d686 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1639,7 +1639,14 @@ static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
 {
         if (dev->dma_ops)
                 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
-        return dma_alloc_coherent(dev->dma_device, size, dma_handle, flag);
+        else {
+                dma_addr_t handle;
+                void *ret;
+
+                ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
+                *dma_handle = handle;
+                return ret;
+        }
 }
 
 /**