scsi: qla2xxx: Use named initializers for q_dev_state

Make q_dev_state a little more readable and maintainable by using named
initializers.

Also convert QLA8XXX_DEV_* macros into an enum and remove
qla83xx_dev_state_to_string(), which is a duplicate of qdev_state().

Link: https://lore.kernel.org/r/AS8PR10MB495298515A7553C8D6D6E74D9D349@AS8PR10MB4952.EURPRD10.PROD.OUTLOOK.COMReviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Gleb Chesnokov <Chesnokov.G@raidix.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_gbl.h

@@ -893,7 +893,7 @@ extern void qla82xx_chip_reset_cleanup(scsi_qla_host_t *);
 extern int qla81xx_set_led_config(scsi_qla_host_t *, uint16_t *);
 extern int qla81xx_get_led_config(scsi_qla_host_t *, uint16_t *);
 extern int qla82xx_mbx_beacon_ctl(scsi_qla_host_t *, int);
-extern char *qdev_state(uint32_t);
+extern const char *qdev_state(uint32_t);
 extern void qla82xx_clear_pending_mbx(scsi_qla_host_t *);
 extern int qla82xx_read_temperature(scsi_qla_host_t *);
 extern int qla8044_read_temperature(scsi_qla_host_t *);

drivers/scsi/qla2xxx/qla_init.c

@@ -6796,29 +6796,6 @@ __qla83xx_clear_drv_ack(scsi_qla_host_t *vha)
 	return rval;
 }
 
-static const char *
-qla83xx_dev_state_to_string(uint32_t dev_state)
-{
-	switch (dev_state) {
-	case QLA8XXX_DEV_COLD:
-		return "COLD/RE-INIT";
-	case QLA8XXX_DEV_INITIALIZING:
-		return "INITIALIZING";
-	case QLA8XXX_DEV_READY:
-		return "READY";
-	case QLA8XXX_DEV_NEED_RESET:
-		return "NEED RESET";
-	case QLA8XXX_DEV_NEED_QUIESCENT:
-		return "NEED QUIESCENT";
-	case QLA8XXX_DEV_FAILED:
-		return "FAILED";
-	case QLA8XXX_DEV_QUIESCENT:
-		return "QUIESCENT";
-	default:
-		return "Unknown";
-	}
-}
-
 /* Assumes idc-lock always held on entry */
 void
 qla83xx_idc_audit(scsi_qla_host_t *vha, int audit_type)
@@ -6872,9 +6849,8 @@ qla83xx_initiating_reset(scsi_qla_host_t *vha)
 		ql_log(ql_log_info, vha, 0xb056, "HW State: NEED RESET.\n");
 		qla83xx_idc_audit(vha, IDC_AUDIT_TIMESTAMP);
 	} else {
-		const char *state = qla83xx_dev_state_to_string(dev_state);
-
-		ql_log(ql_log_info, vha, 0xb057, "HW State: %s.\n", state);
+		ql_log(ql_log_info, vha, 0xb057, "HW State: %s.\n",
+				qdev_state(dev_state));
 
 		/* SV: XXX: Is timeout required here? */
 		/* Wait for IDC state change READY -> NEED_RESET */

drivers/scsi/qla2xxx/qla_nx.c

@@ -335,20 +335,20 @@ static unsigned qla82xx_crb_hub_agt[64] = {
 };
 
 /* Device states */
-static char *q_dev_state[] = {
-	 "Unknown",
-	"Cold",
-	"Initializing",
-	"Ready",
-	"Need Reset",
-	"Need Quiescent",
-	"Failed",
-	"Quiescent",
+static const char *const q_dev_state[] = {
+	[QLA8XXX_DEV_UNKNOWN]		= "Unknown",
+	[QLA8XXX_DEV_COLD]		= "Cold/Re-init",
+	[QLA8XXX_DEV_INITIALIZING]	= "Initializing",
+	[QLA8XXX_DEV_READY]		= "Ready",
+	[QLA8XXX_DEV_NEED_RESET]	= "Need Reset",
+	[QLA8XXX_DEV_NEED_QUIESCENT]	= "Need Quiescent",
+	[QLA8XXX_DEV_FAILED]		= "Failed",
+	[QLA8XXX_DEV_QUIESCENT]		= "Quiescent",
 };
 
-char *qdev_state(uint32_t dev_state)
+const char *qdev_state(uint32_t dev_state)
 {
-	return q_dev_state[dev_state];
+	return (dev_state < MAX_STATES) ? q_dev_state[dev_state] : "Unknown";
 }
 
 /*
@@ -3061,8 +3061,7 @@ qla82xx_need_reset_handler(scsi_qla_host_t *vha)
 
 	ql_log(ql_log_info, vha, 0x00b6,
 	    "Device state is 0x%x = %s.\n",
-	    dev_state,
-	    dev_state < MAX_STATES ? qdev_state(dev_state) : "Unknown");
+	    dev_state, qdev_state(dev_state));
 
 	/* Force to DEV_COLD unless someone else is starting a reset */
 	if (dev_state != QLA8XXX_DEV_INITIALIZING &&
@@ -3185,8 +3184,7 @@ qla82xx_device_state_handler(scsi_qla_host_t *vha)
 	old_dev_state = dev_state;
 	ql_log(ql_log_info, vha, 0x009b,
 	    "Device state is 0x%x = %s.\n",
-	    dev_state,
-	    dev_state < MAX_STATES ? qdev_state(dev_state) : "Unknown");
+	    dev_state, qdev_state(dev_state));
 
 	/* wait for 30 seconds for device to go ready */
 	dev_init_timeout = jiffies + (ha->fcoe_dev_init_timeout * HZ);
@@ -3207,9 +3205,7 @@ qla82xx_device_state_handler(scsi_qla_host_t *vha)
 		if (loopcount < 5) {
 			ql_log(ql_log_info, vha, 0x009d,
 			    "Device state is 0x%x = %s.\n",
-			    dev_state,
-			    dev_state < MAX_STATES ? qdev_state(dev_state) :
-			    "Unknown");
+			    dev_state, qdev_state(dev_state));
 		}
 
 		switch (dev_state) {
@@ -3439,8 +3435,7 @@ qla82xx_set_reset_owner(scsi_qla_host_t *vha)
 	} else
 		ql_log(ql_log_info, vha, 0xb031,
 		    "Device state is 0x%x = %s.\n",
-		    dev_state,
-		    dev_state < MAX_STATES ? qdev_state(dev_state) : "Unknown");
+		    dev_state, qdev_state(dev_state));
 }
 
 /*

drivers/scsi/qla2xxx/qla_nx.h

@@ -540,14 +540,18 @@
 #define QLA82XX_CRB_DRV_IDC_VERSION  (QLA82XX_CAM_RAM(0x174))
 
 /* Every driver should use these Device State */
-#define QLA8XXX_DEV_COLD		1
-#define QLA8XXX_DEV_INITIALIZING	2
-#define QLA8XXX_DEV_READY		3
-#define QLA8XXX_DEV_NEED_RESET		4
-#define QLA8XXX_DEV_NEED_QUIESCENT	5
-#define QLA8XXX_DEV_FAILED		6
-#define QLA8XXX_DEV_QUIESCENT		7
-#define	MAX_STATES			8 /* Increment if new state added */
+enum {
+	QLA8XXX_DEV_UNKNOWN,
+	QLA8XXX_DEV_COLD,
+	QLA8XXX_DEV_INITIALIZING,
+	QLA8XXX_DEV_READY,
+	QLA8XXX_DEV_NEED_RESET,
+	QLA8XXX_DEV_NEED_QUIESCENT,
+	QLA8XXX_DEV_FAILED,
+	QLA8XXX_DEV_QUIESCENT,
+	MAX_STATES, /* Increment if new state added */
+};
+
 #define QLA8XXX_BAD_VALUE		0xbad0bad0
 
 #define QLA82XX_IDC_VERSION			1

drivers/scsi/qla2xxx/qla_nx2.c

@@ -1938,8 +1938,7 @@ qla8044_device_state_handler(struct scsi_qla_host *vha)
 	dev_state = qla8044_rd_direct(vha, QLA8044_CRB_DEV_STATE_INDEX);
 	ql_dbg(ql_dbg_p3p, vha, 0xb0ce,
 	    "Device state is 0x%x = %s\n",
-	    dev_state, dev_state < MAX_STATES ?
-	    qdev_state(dev_state) : "Unknown");
+	    dev_state, qdev_state(dev_state));
 
 	/* wait for 30 seconds for device to go ready */
 	dev_init_timeout = jiffies + (ha->fcoe_dev_init_timeout * HZ);
@@ -1952,8 +1951,7 @@ qla8044_device_state_handler(struct scsi_qla_host *vha)
 				ql_log(ql_log_warn, vha, 0xb0cf,
 				    "%s: Device Init Failed 0x%x = %s\n",
 				    QLA2XXX_DRIVER_NAME, dev_state,
-				    dev_state < MAX_STATES ?
-				    qdev_state(dev_state) : "Unknown");
+				    qdev_state(dev_state));
 				qla8044_wr_direct(vha,
 				    QLA8044_CRB_DEV_STATE_INDEX,
 				    QLA8XXX_DEV_FAILED);
@@ -1963,8 +1961,7 @@ qla8044_device_state_handler(struct scsi_qla_host *vha)
 		dev_state = qla8044_rd_direct(vha, QLA8044_CRB_DEV_STATE_INDEX);
 		ql_log(ql_log_info, vha, 0xb0d0,
 		    "Device state is 0x%x = %s\n",
-		    dev_state, dev_state < MAX_STATES ?
-		    qdev_state(dev_state) : "Unknown");
+		    dev_state, qdev_state(dev_state));
 
 		/* NOTE: Make sure idc unlocked upon exit of switch statement */
 		switch (dev_state) {