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qla3xxx: Ensure request/response queue addr writes to the registers

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Before use the request and response queue addr, make sure it has wrote
to the registers.

Signed-off-by: Joe Jin <joe.jin@oracle.com>
Cc: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Cc: Ron Mercer <ron.mercer@qlogic.com>
Acked-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joe Jin 2012-10-21 14:40:36 +00:00 committed by David S. Miller
parent 6f73601efb
commit 8a6e29d6d0
1 changed files with 7 additions and 2 deletions
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9
drivers/net/ethernet/qlogic/qla3xxx.c
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@ -2525,6 +2525,13 @@ 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,
@ -2536,8 +2543,6 @@ 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,