ide: use ide_legacy_device_add() for qd65xx (take 2)

* Add 'unsigned long config' argument to ide_legacy_device_add()
  for setting hwif->config_data.

* Use ide_find_port_slot() instead of ide_find_port() in
  ide_legacy_device_add().

* Handle IDE_HFLAG_QD_2ND_PORT and IDE_HFLAG_SINGLE host flags in
  ide_legacy_device_add().

* Convert qd65xx host driver to use ide_legacy_device_add().

v2:
* Update ali14xx, dtc2278, ht6560b and umc8672 host drivers.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-probe.c

@@ -1634,7 +1634,7 @@ void ide_port_scan(ide_hwif_t *hwif)
 }
 EXPORT_SYMBOL_GPL(ide_port_scan);
 
-int ide_legacy_device_add(const struct ide_port_info *d)
+int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
 {
 	ide_hwif_t *hwif, *mate;
 	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
@@ -1648,15 +1648,24 @@ int ide_legacy_device_add(const struct ide_port_info *d)
 	ide_std_init_ports(&hw[1], 0x170, 0x376);
 	hw[1].irq = 15;
 
-	hwif = ide_find_port();
+	hwif = ide_find_port_slot(d);
 	if (hwif) {
-		ide_init_port_hw(hwif, &hw[0]);
-		idx[0] = hwif->index;
+		u8 j = (d->host_flags & IDE_HFLAG_QD_2ND_PORT) ? 1 : 0;
+
+		ide_init_port_hw(hwif, &hw[j]);
+		if (config)
+			hwif->config_data = config;
+		idx[j] = hwif->index;
 	}
 
-	mate = ide_find_port();
+	if (hwif == NULL && (d->host_flags & IDE_HFLAG_SINGLE))
+		return -ENOENT;
+
+	mate = ide_find_port_slot(d);
 	if (mate) {
 		ide_init_port_hw(mate, &hw[1]);
+		if (config)
+			mate->config_data = config;
 		idx[1] = mate->index;
 	}
 

drivers/ide/legacy/ali14xx.c

@@ -214,7 +214,7 @@ static int __init ali14xx_probe(void)
 		return 1;
 	}
 
-	return ide_legacy_device_add(&ali14xx_port_info);
+	return ide_legacy_device_add(&ali14xx_port_info, 0);
 }
 
 int probe_ali14xx;

drivers/ide/legacy/dtc2278.c

@@ -125,7 +125,7 @@ static int __init dtc2278_probe(void)
 #endif
 	local_irq_restore(flags);
 
-	return ide_legacy_device_add(&dtc2278_port_info);
+	return ide_legacy_device_add(&dtc2278_port_info, 0);
 }
 
 int probe_dtc2278 = 0;

drivers/ide/legacy/ht6560b.c

@@ -360,7 +360,7 @@ static int __init ht6560b_init(void)
 		goto release_region;
 	}
 
-	return ide_legacy_device_add(&ht6560b_port_info);
+	return ide_legacy_device_add(&ht6560b_port_info, 0);
 
 release_region:
 	release_region(HT_CONFIG_PORT, 1);

drivers/ide/legacy/qd65xx.c

@@ -333,10 +333,8 @@ static const struct ide_port_info qd65xx_port_info __initdata = {
 
 static int __init qd_probe(int base)
 {
-	ide_hwif_t *hwif;
+	int rc;
 	u8 config, unit;
-	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-	hw_regs_t hw[2];
 	struct ide_port_info d = qd65xx_port_info;
 
 	config = inb(QD_CONFIG_PORT);
@@ -349,14 +347,6 @@ static int __init qd_probe(int base)
 	if (unit)
 		d.host_flags |= IDE_HFLAG_QD_2ND_PORT;
 
-	memset(&hw, 0, sizeof(hw));
-
-	ide_std_init_ports(&hw[0], 0x1f0, 0x3f6);
-	hw[0].irq = 14;
-
-	ide_std_init_ports(&hw[1], 0x170, 0x376);
-	hw[1].irq = 15;
-
 	if ((config & 0xf0) == QD_CONFIG_QD6500) {
 
 		if (qd_testreg(base))
@@ -376,19 +366,9 @@ static int __init qd_probe(int base)
 		d.port_ops = &qd6500_port_ops;
 		d.host_flags |= IDE_HFLAG_SINGLE;
 
-		hwif = ide_find_port_slot(&d);
-		if (hwif == NULL)
-			return -ENOENT;
-
-		ide_init_port_hw(hwif, &hw[unit]);
+		rc = ide_legacy_device_add(&d, (base << 8) | config);
 
-		hwif->config_data = (base << 8) | config;
-
-		idx[unit] = hwif->index;
-
-		ide_device_add(idx, &d);
-
-		return 1;
+		return (rc == 0) ? 1 : rc;
 	}
 
 	if (((config & 0xf0) == QD_CONFIG_QD6580_A) ||
@@ -418,40 +398,16 @@ static int __init qd_probe(int base)
 
 			d.host_flags |= IDE_HFLAG_SINGLE;
 
-			hwif = ide_find_port_slot(&d);
-			if (hwif == NULL)
-				return -ENOENT;
+			rc = ide_legacy_device_add(&d, (base << 8) | config);
 
-			ide_init_port_hw(hwif, &hw[unit]);
-
-			hwif->config_data = (base << 8) | config;
-
-			idx[unit] = hwif->index;
-
-			ide_device_add(idx, &d);
-
-			return 1;
+			return (rc == 0) ? 1 : rc;
 		} else {
-			ide_hwif_t *mate;
-
 			/* secondary enabled */
 			printk(KERN_INFO "qd6580: dual IDE board\n");
 
-			hwif = ide_find_port();
-			if (hwif) {
-				ide_init_port_hw(hwif, &hw[0]);
-				idx[0] = hwif->index;
-			}
-
-			mate = ide_find_port();
-			if (mate) {
-				ide_init_port_hw(mate, &hw[1]);
-				idx[1] = mate->index;
-			}
-
-			ide_device_add(idx, &d);
+			rc = ide_legacy_device_add(&d, (base << 8) | config);
 
-			return 0; /* no other qd65xx possible */
+			return rc; /* no other qd65xx possible */
 		}
 	}
 	/* no qd65xx found */

drivers/ide/legacy/umc8672.c

@@ -152,7 +152,7 @@ static int __init umc8672_probe(void)
 	umc_set_speeds(current_speeds);
 	local_irq_restore(flags);
 
-	return ide_legacy_device_add(&umc8672_port_info);
+	return ide_legacy_device_add(&umc8672_port_info, 0);
 }
 
 int probe_umc8672;

include/linux/ide.h

@@ -1213,7 +1213,7 @@ void ide_undecoded_slave(ide_drive_t *);
 
 int ide_device_add_all(u8 *idx, const struct ide_port_info *);
 int ide_device_add(u8 idx[4], const struct ide_port_info *);
-int ide_legacy_device_add(const struct ide_port_info *);
+int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
 void ide_port_unregister_devices(ide_hwif_t *);
 void ide_port_scan(ide_hwif_t *);