[SCSI] be2iscsi: Fix repeated issue of MAC ADDR get IOCTL

Storing MAC ADDR of each function in it's priv structure to
avoid issuing MAC_ADDR get IOCTL. Based on a flag set/unset
it's decided if MAC_ADDR is stored in priv structure or IOCTL
needs to be issued.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index ef36be00..2496ea7 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -840,7 +840,7 @@
 	struct be_cmd_get_nic_conf_resp resp;
 	int rc;
 
-	if (strlen(phba->mac_address))
+	if (phba->mac_addr_set)
 		return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 
 	memset(&resp, 0, sizeof(resp));
@@ -848,6 +848,7 @@
 	if (rc)
 		return rc;
 
+	phba->mac_addr_set = true;
 	memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
 	return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 }
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 0abed0a..5ba575f 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -4948,6 +4948,7 @@
 	beiscsi_hba_attrs_init(phba);
 
 	phba->fw_timeout = false;
+	phba->mac_addr_set = false;
 
 
 	switch (pcidev->device) {
diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h
index 3e45257..5165515 100644
--- a/drivers/scsi/be2iscsi/be_main.h
+++ b/drivers/scsi/be2iscsi/be_main.h
@@ -348,6 +348,7 @@
 	bool ue_detected;
 	struct delayed_work beiscsi_hw_check_task;
 
+	bool mac_addr_set;
 	u8 mac_address[ETH_ALEN];
 	char fw_ver_str[BEISCSI_VER_STRLEN];
 	char wq_name[20];