[SCSI] qla4xxx: cache new IP address acquired via DHCP

Prior to firmware state change from ACQUIRING to READY, an
0x8029 AEN is received. Added code to check previous state
being ACQUIRING in order to update the ip address in the driver.

Signed-off-by: Vikas Chaudhary <[email protected]>
Signed-off-by: Prasanna Mumbai <[email protected]>
Signed-off-by: Ravi Anand <[email protected]>
Signed-off-by: James Bottomley <[email protected]>

Author: Prasanna Mumbai

drivers/scsi/qla4xxx/ql4_isr.c

@@ -554,7 +554,8 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
 			/* mbox_sts[2] = Old ACB state
 			 * mbox_sts[3] = new ACB state */
 			if ((mbox_sts[3] == ACB_STATE_VALID) &&
-			    (mbox_sts[2] == ACB_STATE_TENTATIVE))
+			    ((mbox_sts[2] == ACB_STATE_TENTATIVE) ||
+			    (mbox_sts[2] == ACB_STATE_ACQUIRING)))
 				set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
 			else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) &&
 			    (mbox_sts[2] == ACB_STATE_VALID))