* [patch] qedr: Unlock on error in qedr_post_send()
@ 2016-11-15 9:51 Dan Carpenter
2016-11-15 10:28 ` Amrani, Ram
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2016-11-15 9:51 UTC (permalink / raw)
To: Doug Ledford, Ram Amrani
Cc: Sean Hefty, Hal Rosenstock, Rajesh Borundia, linux-rdma,
kernel-janitors
If "wr" is NULL then we return without unlocking. I added an unlock
label and changed the direct returns to gotos.
Fixes: afa0e13be754 ("qedr: Add support for data path")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index a615142..01d05b0 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -2973,17 +2973,18 @@ int qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
if ((qp->state = QED_ROCE_QP_STATE_RESET) ||
(qp->state = QED_ROCE_QP_STATE_ERR)) {
- spin_unlock_irqrestore(&qp->q_lock, flags);
*bad_wr = wr;
DP_DEBUG(dev, QEDR_MSG_CQ,
"QP in wrong state! QP icid=0x%x state %d\n",
qp->icid, qp->state);
- return -EINVAL;
+ rc = -EINVAL;
+ goto unlock;
}
if (!wr) {
DP_ERR(dev, "Got an empty post send.\n");
- return -EINVAL;
+ rc = -EINVAL;
+ goto unlock;
}
while (wr) {
@@ -3012,6 +3013,7 @@ int qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
/* Make sure write sticks */
mmiowb();
+unlock:
spin_unlock_irqrestore(&qp->q_lock, flags);
return rc;
^ permalink raw reply related [flat|nested] 2+ messages in thread* RE: [patch] qedr: Unlock on error in qedr_post_send()
2016-11-15 9:51 [patch] qedr: Unlock on error in qedr_post_send() Dan Carpenter
@ 2016-11-15 10:28 ` Amrani, Ram
0 siblings, 0 replies; 2+ messages in thread
From: Amrani, Ram @ 2016-11-15 10:28 UTC (permalink / raw)
To: Dan Carpenter, Doug Ledford
Cc: Sean Hefty, Hal Rosenstock, Borundia, Rajesh,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Wei Yongjun
> If "wr" is NULL then we return without unlocking. I added an unlock
> label and changed the direct returns to gotos.
>
> Fixes: afa0e13be754 ("qedr: Add support for data path")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> diff --git a/drivers/infiniband/hw/qedr/verbs.c
> b/drivers/infiniband/hw/qedr/verbs.c
> index a615142..01d05b0 100644
> --- a/drivers/infiniband/hw/qedr/verbs.c
> +++ b/drivers/infiniband/hw/qedr/verbs.c
> @@ -2973,17 +2973,18 @@ int qedr_post_send(struct ib_qp *ibqp, struct
> ib_send_wr *wr,
>
> if ((qp->state == QED_ROCE_QP_STATE_RESET) ||
> (qp->state == QED_ROCE_QP_STATE_ERR)) {
> - spin_unlock_irqrestore(&qp->q_lock, flags);
> *bad_wr = wr;
> DP_DEBUG(dev, QEDR_MSG_CQ,
> "QP in wrong state! QP icid=0x%x state %d\n",
> qp->icid, qp->state);
> - return -EINVAL;
> + rc = -EINVAL;
> + goto unlock;
> }
>
> if (!wr) {
> DP_ERR(dev, "Got an empty post send.\n");
> - return -EINVAL;
> + rc = -EINVAL;
> + goto unlock;
> }
>
> while (wr) {
> @@ -3012,6 +3013,7 @@ int qedr_post_send(struct ib_qp *ibqp, struct
> ib_send_wr *wr,
> /* Make sure write sticks */
> mmiowb();
>
> +unlock:
> spin_unlock_irqrestore(&qp->q_lock, flags);
>
> return rc;
Thanks for catching this. However this was already taken care of by Wei Yongjun in a different manner.
See: https://patchwork.kernel.org/patch/9409053/
Thanks,
Ram
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