IB/core: don't disallow registering region starting at 0x0

[pandora-kernel.git] / drivers / infiniband / core / umem.c

diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index dccb9aa..c1fef27 100644 (file)
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -101,8 +101,8 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
         * If the combination of the addr and size requested for this memory
         * region causes an integer overflow, return error.
         */
-       if ((PAGE_ALIGN(addr + size) <= size) ||
-           (PAGE_ALIGN(addr + size) <= addr))
+       if (((addr + size) < addr) ||
+           PAGE_ALIGN(addr + size) < (addr + size))
                return ERR_PTR(-EINVAL);
 
        if (!can_do_mlock())