[SCSI] qla2xxx: Obtain proper host structure during response-queue processing.

Original code incorrectly assumed only status-type-0
IOCBs would be queued to the response-queue, and thus all
entries would safely reference a VHA from the IOCB
'handle.'

Cc: stable@kernel.org
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index b901aa267e7..ff17dee2861 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -636,13 +636,15 @@ failed:
 
 static void qla_do_work(struct work_struct *work)
 {
+        unsigned long flags;
         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
         struct scsi_qla_host *vha;
+        struct qla_hw_data *ha = rsp->hw;
 
-        spin_lock_irq(&rsp->hw->hardware_lock);
-        vha = qla25xx_get_host(rsp);
+        spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
+        vha = pci_get_drvdata(ha->pdev);
         qla24xx_process_response_queue(vha, rsp);
-        spin_unlock_irq(&rsp->hw->hardware_lock);
+        spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 }
 
 /* create response queue */