From: Joe Jin <joe.jin@oracle.com>
To: Ron Mercer <ron.mercer@qlogic.com>,
Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>,
linux-driver@qlogic.com
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Greg Marsden <greg.marsden@oracle.com>
Subject: [PATCH] qla3xxx: Ensure req_q_phy_addr writes to the register
Date: Wed, 17 Oct 2012 14:32:05 +0800 [thread overview]
Message-ID: <507E50E5.5040201@oracle.com> (raw)
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Make sure req_q_phy_addr write to the register.
Signed-off-by: Joe Jin <joe.jin@oracle.com>
Cc: Ron Mercer <ron.mercer@qlogic.com>
Cc: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
---
drivers/net/ethernet/qlogic/qla3xxx.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c
index df09b1c..78b4cba 100644
--- a/drivers/net/ethernet/qlogic/qla3xxx.c
+++ b/drivers/net/ethernet/qlogic/qla3xxx.c
@@ -2525,6 +2525,12 @@ 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));
+ /*
+ * The barrier is required to ensure that req_q_phy_addr writes to
+ * the memory.
+ */
+ wmb();
+
qdev->req_q_virt_addr =
pci_alloc_consistent(qdev->pdev,
(size_t) qdev->req_q_size,
--
1.7.11.7
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next reply other threads:[~2012-10-17 6:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 6:32 Joe Jin [this message]
2012-10-17 17:45 ` [PATCH] qla3xxx: Ensure req_q_phy_addr writes to the register Jitendra Kalsaria
2012-10-18 2:18 ` Joe Jin
2012-10-18 17:10 ` Jitendra Kalsaria
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