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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 <[email protected]>
Cc: Jitendra Kalsaria <[email protected]>
Cc: Ron Mercer <[email protected]>
Acked-by: Jitendra Kalsaria <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Joe Jin 2012-10-21 14:40:36 +00:00 • committed by David S. Miller
commit 8a6e29d6d0
1 changed files with 7 additions and 2 deletions
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9
drivers/net/ethernet/qlogic/qla3xxx.c
View file

@ -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,