From 24239aff4e25cba2d068b2c6b8e739257351c15d Mon Sep 17 00:00:00 2001 From: Sean Hefty Date: Sat, 16 Apr 2005 15:26:08 -0700 Subject: [PATCH] [PATCH] IB: Keep MAD work completion valid Replace the *wc field in ib_mad_recv_wc from pointing to a structure on the stack to one allocated with the received MAD buffer. This allows a client to access the *wc field after their receive completion handler has returned. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/infiniband/core/mad.c | 3 ++- drivers/infiniband/core/mad_priv.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 4ec7fff29b5d..9ed7d42b82a7 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -1600,7 +1600,8 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv, DMA_FROM_DEVICE); /* Setup MAD receive work completion from "normal" work completion */ - recv->header.recv_wc.wc = wc; + recv->header.wc = *wc; + recv->header.recv_wc.wc = &recv->header.wc; recv->header.recv_wc.mad_len = sizeof(struct ib_mad); recv->header.recv_wc.recv_buf.mad = &recv->mad.mad; recv->header.recv_wc.recv_buf.grh = &recv->grh; diff --git a/drivers/infiniband/core/mad_priv.h b/drivers/infiniband/core/mad_priv.h index 4ba9f726bf1d..008cbcb94b15 100644 --- a/drivers/infiniband/core/mad_priv.h +++ b/drivers/infiniband/core/mad_priv.h @@ -69,6 +69,7 @@ struct ib_mad_list_head { struct ib_mad_private_header { struct ib_mad_list_head mad_list; struct ib_mad_recv_wc recv_wc; + struct ib_wc wc; DECLARE_PCI_UNMAP_ADDR(mapping) } __attribute__ ((packed)); -- 2.20.1