[PATCH review for 4.9 31/50] qed: Read queue state before releasing buffer

From: Levin, Alexander (Sasha Levin)
Date: Sun Sep 24 2017 - 21:27:58 EST


From: Ram Amrani <Ram.Amrani@xxxxxxxxxx>

[ Upstream commit c5212b943d4b52a7d9e0d9f747e7ad59c50d31f1 ]

Currently the state is read only after the buffers are relesed.

Signed-off-by: Ram Amrani <Ram.Amrani@xxxxxxxxxx>
Signed-off-by: Yuval Mintz <Yuval.Mintz@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
drivers/net/ethernet/qlogic/qed/qed_roce.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
index f3a825a8f8d5..d9dcb0d1714c 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -1766,13 +1766,13 @@ static int qed_roce_query_qp(struct qed_hwfn *p_hwfn,
if (rc)
goto err_resp;

- dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_resp_ramrod_res),
- p_resp_ramrod_res, resp_ramrod_res_phys);
-
out_params->rq_psn = le32_to_cpu(p_resp_ramrod_res->psn);
rq_err_state = GET_FIELD(le32_to_cpu(p_resp_ramrod_res->err_flag),
ROCE_QUERY_QP_RESP_OUTPUT_PARAMS_ERROR_FLG);

+ dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_resp_ramrod_res),
+ p_resp_ramrod_res, resp_ramrod_res_phys);
+
if (!(qp->req_offloaded)) {
/* Don't send query qp for the requester */
out_params->sq_psn = qp->sq_psn;
@@ -1813,9 +1813,6 @@ static int qed_roce_query_qp(struct qed_hwfn *p_hwfn,
if (rc)
goto err_req;

- dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_req_ramrod_res),
- p_req_ramrod_res, req_ramrod_res_phys);
-
out_params->sq_psn = le32_to_cpu(p_req_ramrod_res->psn);
sq_err_state = GET_FIELD(le32_to_cpu(p_req_ramrod_res->flags),
ROCE_QUERY_QP_REQ_OUTPUT_PARAMS_ERR_FLG);
@@ -1823,6 +1820,9 @@ static int qed_roce_query_qp(struct qed_hwfn *p_hwfn,
GET_FIELD(le32_to_cpu(p_req_ramrod_res->flags),
ROCE_QUERY_QP_REQ_OUTPUT_PARAMS_SQ_DRAINING_FLG);

+ dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_req_ramrod_res),
+ p_req_ramrod_res, req_ramrod_res_phys);
+
out_params->draining = false;

if (rq_err_state)
--
2.11.0