linux-kernel - [PATCH 4.19 075/142] RDMA/rdmavt: Fix rvt_create

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Message-Id: <20181214115750.061062619@linuxfoundation.org>
Date:   Fri, 14 Dec 2018 12:59:20 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Kamal Heib <kamalheib1@...il.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 075/142] RDMA/rdmavt: Fix rvt_create_ah function signature

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 4f32fb921b153ae9ea280e02a3e91509fffc03d3 ]

rdmavt uses a crazy system that looses the type checking when assinging
functions to struct ib_device function pointers. Because of this the
signature to this function was not changed when the below commit revised
things.

Fix the signature so we are not calling a function pointer with a
mismatched signature.

Fixes: 477864c8fcd9 ("IB/core: Let create_ah return extended response to user")
Signed-off-by: Kamal Heib <kamalheib1@...il.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@...el.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/sw/rdmavt/ah.c | 4 +++-
 drivers/infiniband/sw/rdmavt/ah.h | 3 ++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/sw/rdmavt/ah.c b/drivers/infiniband/sw/rdmavt/ah.c
index 89ec0f64abfc..084bb4baebb5 100644
--- a/drivers/infiniband/sw/rdmavt/ah.c
+++ b/drivers/infiniband/sw/rdmavt/ah.c
@@ -91,13 +91,15 @@ EXPORT_SYMBOL(rvt_check_ah);
  * rvt_create_ah - create an address handle
  * @pd: the protection domain
  * @ah_attr: the attributes of the AH
+ * @udata: pointer to user's input output buffer information.
  *
  * This may be called from interrupt context.
  *
  * Return: newly allocated ah
  */
 struct ib_ah *rvt_create_ah(struct ib_pd *pd,
-			    struct rdma_ah_attr *ah_attr)
+			    struct rdma_ah_attr *ah_attr,
+			    struct ib_udata *udata)
 {
 	struct rvt_ah *ah;
 	struct rvt_dev_info *dev = ib_to_rvt(pd->device);
diff --git a/drivers/infiniband/sw/rdmavt/ah.h b/drivers/infiniband/sw/rdmavt/ah.h
index 16105af99189..25271b48a683 100644
--- a/drivers/infiniband/sw/rdmavt/ah.h
+++ b/drivers/infiniband/sw/rdmavt/ah.h
@@ -51,7 +51,8 @@
 #include <rdma/rdma_vt.h>
 
 struct ib_ah *rvt_create_ah(struct ib_pd *pd,
-			    struct rdma_ah_attr *ah_attr);
+			    struct rdma_ah_attr *ah_attr,
+			    struct ib_udata *udata);
 int rvt_destroy_ah(struct ib_ah *ibah);
 int rvt_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
 int rvt_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
-- 
2.19.1