From 60fc683740537f4dde8127b756c53c35e63c926e Mon Sep 17 00:00:00 2001 From: Joe Jin Date: Mon, 22 Oct 2012 08:26:30 +0800 Subject: [PATCH] qla3xxx: Ensure request/response queue addr writes to the registers Orabug: 14614290 Before use the request and response queue addr, make sure it has wrote to the registers. Signed-off-by: Joe Jin Cc: Jitendra Kalsaria Cc: Ron Mercer --- drivers/net/qla3xxx.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/qla3xxx.c b/drivers/net/qla3xxx.c index 807267b5992c..dbd787b72e5a 100644 --- a/drivers/net/qla3xxx.c +++ b/drivers/net/qla3xxx.c @@ -2526,6 +2526,13 @@ static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev) qdev->req_q_size = (u32) (NUM_REQ_Q_ENTRIES * sizeof(struct ob_mac_iocb_req)); + qdev->rsp_q_size = NUM_RSP_Q_ENTRIES * sizeof(struct net_rsp_iocb); + + /* The barrier is required to ensure request and response queue + * addr writes to the registers. + */ + wmb(); + qdev->req_q_virt_addr = pci_alloc_consistent(qdev->pdev, (size_t) qdev->req_q_size, @@ -2537,8 +2544,6 @@ static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev) return -ENOMEM; } - qdev->rsp_q_size = NUM_RSP_Q_ENTRIES * sizeof(struct net_rsp_iocb); - qdev->rsp_q_virt_addr = pci_alloc_consistent(qdev->pdev, (size_t) qdev->rsp_q_size, -- 2.50.1