[IB] simplify mad_rmpp.c:alloc_response_msg()
Change alloc_response_msg() in mad_rmpp.c to return the struct
it allocates directly (or an error code a la ERR_PTR), rather than
returning a status and passing the struct back in a pointer param.
This simplifies the code and gets rid of warnings like
drivers/infiniband/core/mad_rmpp.c: In function nack_recv:
drivers/infiniband/core/mad_rmpp.c:192: warning: msg may be used uninitialized in this function
with newer versions of gcc.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/core/mad_rmpp.c b/drivers/infiniband/core/mad_rmpp.c
index ba112cd..3249e1d 100644
--- a/drivers/infiniband/core/mad_rmpp.c
+++ b/drivers/infiniband/core/mad_rmpp.c
@@ -151,28 +151,27 @@
ib_free_send_mad(msg);
}
-static int alloc_response_msg(struct ib_mad_agent *agent,
- struct ib_mad_recv_wc *recv_wc,
- struct ib_mad_send_buf **msg)
+static struct ib_mad_send_buf *alloc_response_msg(struct ib_mad_agent *agent,
+ struct ib_mad_recv_wc *recv_wc)
{
- struct ib_mad_send_buf *m;
+ struct ib_mad_send_buf *msg;
struct ib_ah *ah;
ah = ib_create_ah_from_wc(agent->qp->pd, recv_wc->wc,
recv_wc->recv_buf.grh, agent->port_num);
if (IS_ERR(ah))
- return PTR_ERR(ah);
+ return (void *) ah;
- m = ib_create_send_mad(agent, recv_wc->wc->src_qp,
- recv_wc->wc->pkey_index, 1,
- IB_MGMT_RMPP_HDR, IB_MGMT_RMPP_DATA, GFP_KERNEL);
- if (IS_ERR(m)) {
+ msg = ib_create_send_mad(agent, recv_wc->wc->src_qp,
+ recv_wc->wc->pkey_index, 1,
+ IB_MGMT_RMPP_HDR, IB_MGMT_RMPP_DATA,
+ GFP_KERNEL);
+ if (IS_ERR(msg))
ib_destroy_ah(ah);
- return PTR_ERR(m);
- }
- m->ah = ah;
- *msg = m;
- return 0;
+ else
+ msg->ah = ah;
+
+ return msg;
}
void ib_rmpp_send_handler(struct ib_mad_send_wc *mad_send_wc)
@@ -191,8 +190,8 @@
struct ib_rmpp_mad *rmpp_mad;
int ret;
- ret = alloc_response_msg(&agent->agent, recv_wc, &msg);
- if (ret)
+ msg = alloc_response_msg(&agent->agent, recv_wc);
+ if (IS_ERR(msg))
return;
rmpp_mad = msg->mad;