[SCSI] hpsa: improve naming on external target device functions

Reduce confusion and inaccuracy caused by dated naming of vars and functions
referring to external target devices.

CURRENT NAMING:                PROPOSED NAMING:

"MSA2xxx devices"              "external target devices"
msa2xxx_model                  ext_target_model
is_msa2xxx                     is_ext_target
add_msa2xxx_enclosure          add_ext_target_dev
nmsa2xxx_enclosures            n_ext_target_devs

Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/hpsa.c

@@ -214,7 +214,8 @@ static int check_for_unit_attention(struct ctlr_info *h,
 		dev_warn(&h->pdev->dev, HPSA "%d: report LUN data "
 			"changed, action required\n", h->ctlr);
 	/*
-	 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
+	 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
+	 * target (array) devices.
 	 */
 		break;
 	case POWER_OR_RESET:
@@ -1602,7 +1603,7 @@ static int hpsa_update_device_info(struct ctlr_info *h,
 	return 1;
 }
 
-static unsigned char *msa2xxx_model[] = {
+static unsigned char *ext_target_model[] = {
 	"MSA2012",
 	"MSA2024",
 	"MSA2312",
@@ -1611,19 +1612,19 @@ static unsigned char *msa2xxx_model[] = {
 	NULL,
 };
 
-static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
+static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
 {
 	int i;
 
-	for (i = 0; msa2xxx_model[i]; i++)
-		if (strncmp(device->model, msa2xxx_model[i],
-			strlen(msa2xxx_model[i])) == 0)
+	for (i = 0; ext_target_model[i]; i++)
+		if (strncmp(device->model, ext_target_model[i],
+			strlen(ext_target_model[i])) == 0)
 			return 1;
 	return 0;
 }
 
 /* Helper function to assign bus, target, lun mapping of devices.
- * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
+ * Puts non-external target logical volumes on bus 0, external target logical
  * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
  * Logical drive target and lun are assigned at this time, but
  * physical device lun and target assignment are deferred (assigned
@@ -1644,8 +1645,8 @@ static void figure_bus_target_lun(struct ctlr_info *h,
 		return;
 	}
 	/* It's a logical device */
-	if (is_msa2xxx(h, device)) {
-		/* msa2xxx way, put logicals on bus 1
+	if (is_ext_target(h, device)) {
+		/* external target way, put logicals on bus 1
 		 * and match target/lun numbers box
 		 * reports, other smart array, bus 0, target 0, match lunid
 		 */
@@ -1658,7 +1659,7 @@ static void figure_bus_target_lun(struct ctlr_info *h,
 
 /*
  * If there is no lun 0 on a target, linux won't find any devices.
- * For the MSA2xxx boxes, we have to manually detect the enclosure
+ * For the external targets (arrays), we have to manually detect the enclosure
  * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
  * it for some reason.  *tmpdevice is the target we're adding,
  * this_device is a pointer into the current element of currentsd[]
@@ -1667,10 +1668,10 @@ static void figure_bus_target_lun(struct ctlr_info *h,
  * lun 0 assigned.
  * Returns 1 if an enclosure was added, 0 if not.
  */
-static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
+static int add_ext_target_dev(struct ctlr_info *h,
 	struct hpsa_scsi_dev_t *tmpdevice,
 	struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
-	unsigned long lunzerobits[], int *nmsa2xxx_enclosures)
+	unsigned long lunzerobits[], int *n_ext_target_devs)
 {
 	unsigned char scsi3addr[8];
 
@@ -1680,8 +1681,8 @@ static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
 	if (!is_logical_dev_addr_mode(lunaddrbytes))
 		return 0; /* It's the logical targets that may lack lun 0. */
 
-	if (!is_msa2xxx(h, tmpdevice))
-		return 0; /* It's only the MSA2xxx that have this problem. */
+	if (!is_ext_target(h, tmpdevice))
+		return 0; /* Only external target devices have this problem. */
 
 	if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */
 		return 0;
@@ -1694,7 +1695,7 @@ static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
 	if (is_scsi_rev_5(h))
 		return 0; /* p1210m doesn't need to do this. */
 
-	if (*nmsa2xxx_enclosures >= MAX_EXT_TARGETS) {
+	if (*n_ext_target_devs >= MAX_EXT_TARGETS) {
 		dev_warn(&h->pdev->dev, "Maximum number of external "
 			"target devices exceeded.  Check your hardware "
 			"configuration.");
@@ -1703,7 +1704,7 @@ static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
 
 	if (hpsa_update_device_info(h, scsi3addr, this_device, NULL))
 		return 0;
-	(*nmsa2xxx_enclosures)++;
+	(*n_ext_target_devs)++;
 	hpsa_set_bus_target_lun(this_device,
 				tmpdevice->bus, tmpdevice->target, 0);
 	set_bit(tmpdevice->target, lunzerobits);
@@ -1800,7 +1801,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
 	struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
 	int ncurrent = 0;
 	int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8;
-	int i, nmsa2xxx_enclosures, ndevs_to_allocate;
+	int i, n_ext_target_devs, ndevs_to_allocate;
 	int raid_ctlr_position;
 	DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
 
@@ -1849,7 +1850,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
 		raid_ctlr_position = nphysicals + nlogicals;
 
 	/* adjust our table of devices */
-	nmsa2xxx_enclosures = 0;
+	n_ext_target_devs = 0;
 	for (i = 0; i < nphysicals + nlogicals + 1; i++) {
 		u8 *lunaddrbytes, is_OBDR = 0;
 
@@ -1869,15 +1870,15 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
 		this_device = currentsd[ncurrent];
 
 		/*
-		 * For the msa2xxx boxes, we have to insert a LUN 0 which
+		 * For external target devices, we have to insert a LUN 0 which
 		 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
 		 * is nonetheless an enclosure device there.  We have to
 		 * present that otherwise linux won't find anything if
 		 * there is no lun 0.
 		 */
-		if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device,
+		if (add_ext_target_dev(h, tmpdevice, this_device,
 				lunaddrbytes, lunzerobits,
-				&nmsa2xxx_enclosures)) {
+				&n_ext_target_devs)) {
 			ncurrent++;
 			this_device = currentsd[ncurrent];
 		}