[SCSI] qla2xxx: Ignore driver ack bit if corresponding presence bit is not set.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 67f7b56e1b0b..9ad66a3abe12 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -4230,7 +4230,7 @@ qla83xx_need_reset_handler(scsi_qla_host_t *vha)
         while (1) {
                 qla83xx_rd_reg(vha, QLA83XX_IDC_DRIVER_ACK, &drv_ack);
                 qla83xx_rd_reg(vha, QLA83XX_IDC_DRV_PRESENCE, &drv_presence);
-                if (drv_ack == drv_presence)
+                if ((drv_ack & drv_presence) == drv_presence)
                         break;
 
                 if (time_after_eq(jiffies, ack_timeout)) {