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[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>
This commit is contained in:
Saurav Kashyap 2012-11-21 02:40:36 -05:00 committed by James Bottomley
parent 8c0bc701f9
commit 807fb6d8af
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/qla2xxx/qla_os.c
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@ -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)) {