[PATCH 2/5] qla2xxx: Fix for a multiqueue bug in CPU affinity mode

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From: Anirban Chakraborty <anirban.chakraborty@xxxxxxxxxx>

Hold the hardware lock while do the response completion in work queue threads as
it involves sharing a common request queue among multiple threads.

Signed-off-by: Anirban Chakraborty <anirban.chakraborty@xxxxxxxxxx>
Signed-off-by: Giridhar Malavali <giridhar.malavali@xxxxxxxxxx>
---
 drivers/scsi/qla2xxx/qla_mid.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 2a4c7f4..b901aa2 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -639,8 +639,10 @@ static void qla_do_work(struct work_struct *work)
 	struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 	struct scsi_qla_host *vha;
 
+	spin_lock_irq(&rsp->hw->hardware_lock);
 	vha = qla25xx_get_host(rsp);
 	qla24xx_process_response_queue(vha, rsp);
+	spin_unlock_irq(&rsp->hw->hardware_lock);
 }
 
 /* create response queue */
-- 
1.6.2.rc1.30.gd43c

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