[SCSI] qla2xxx: Prevent CPU lockups when "ql2xdontresethba" module param is set.

Driver is not releasing the lock if ql2xdontresethba is set, this might lead
to a lockup.

Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c
index b03c86b7a989..fe9db224794d 100644
--- a/drivers/scsi/qla2xxx/qla_nx.c
+++ b/drivers/scsi/qla2xxx/qla_nx.c
@@ -3761,10 +3761,15 @@ qla82xx_device_state_handler(scsi_qla_host_t *vha)
                         qla82xx_idc_lock(ha);
                         break;
                 case QLA82XX_DEV_NEED_RESET:
-                    if (!ql2xdontresethba)
-                        qla82xx_need_reset_handler(vha);
+                        if (!ql2xdontresethba)
+                                qla82xx_need_reset_handler(vha);
+                        else {
+                                qla82xx_idc_unlock(ha);
+                                msleep(1000);
+                                qla82xx_idc_lock(ha);
+                        }
                         dev_init_timeout = jiffies +
-                                (ha->nx_dev_init_timeout * HZ);
+                            (ha->nx_dev_init_timeout * HZ);
                         break;
                 case QLA82XX_DEV_NEED_QUIESCENT:
                         qla82xx_need_qsnt_handler(vha);