diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index e933a53779a4..05cca36f6a4b 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -893,7 +893,8 @@ static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 		goto err_umem;
 	}
 
-	pages = (u64 *) __get_free_page(GFP_KERNEL);
+	/* TODO: switch to "fast and as large as possible" allocation helper */
+	pages = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!pages) {
 		err = -ENOMEM;
 		goto err_mtt;
@@ -922,7 +923,7 @@ static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 	if (i)
 		err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 mtt_done:
-	free_page((unsigned long) pages);
+	kfree(pages);
 	if (err)
 		goto err_mtt;