[POWERPC] Remove old interface find_devices

Replace uses with of_find_node_by_name and for_each_node_by_name.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

4 files changed, 103 insertions, 54 deletions

diff --git a/sound/oss/dmasound/dmasound_awacs.c b/sound/oss/dmasound/dmasound_awacs.c
index 977b91c..730fa1d 100644
--- a/sound/oss/dmasound/dmasound_awacs.c
+++ b/sound/oss/dmasound/dmasound_awacs.c
@@ -346,14 +346,16 @@ int gpio_headphone_irq;
 int
 setup_audio_gpio(const char *name, const char* compatible, int *gpio_addr, int* gpio_pol)
 {
+	struct device_node *gpiop;
 	struct device_node *np;
 	const u32* pp;
+	int ret = -ENODEV;
 
-	np = find_devices("gpio");
-	if (!np)
-		return -ENODEV;
+	gpiop = of_find_node_by_name(NULL, "gpio");
+	if (!gpiop)
+		goto done;
 
-	np = np->child;
+	np = of_get_next_child(gpiop, NULL);
 	while(np != 0) {
 		if (name) {
 			const char *property =
@@ -362,20 +364,24 @@ setup_audio_gpio(const char *name, const char* compatible, int *gpio_addr, int*
 				break;
 		} else if (compatible && device_is_compatible(np, compatible))
 			break;
-		np = np->sibling;
+		np = of_get_next_child(gpiop, np);
 	}
 	if (!np)
-		return -ENODEV;
+		goto done;
 	pp = of_get_property(np, "AAPL,address", NULL);
 	if (!pp)
-		return -ENODEV;
+		goto done;
 	*gpio_addr = (*pp) & 0x0000ffff;
 	pp = of_get_property(np, "audio-gpio-active-state", NULL);
 	if (pp)
 		*gpio_pol = *pp;
 	else
 		*gpio_pol = 1;
-	return irq_of_parse_and_map(np, 0);
+	ret = irq_of_parse_and_map(np, 0);
+done:
+	of_node_put(np);
+	of_node_put(gpiop);
+	return ret;
 }
 
 static inline void
@@ -2552,32 +2558,33 @@ set_model(void)
 static struct device_node* __init
 get_snd_io_node(void)
 {
-	struct device_node *np = NULL;
+	struct device_node *np;
 
 	/* set up awacs_node for early OF which doesn't have a full set of
 	 * properties on davbus
-	*/
-
-	awacs_node = find_devices("awacs");
+	 */
+	awacs_node = of_find_node_by_name(NULL, "awacs");
 	if (awacs_node)
 		awacs_revision = AWACS_AWACS;
 
 	/* powermac models after 9500 (other than those which use DACA or
 	 * Tumbler) have a node called "davbus".
 	 */
-	np = find_devices("davbus");
+	np = of_find_node_by_name(NULL, "davbus");
 	/*
 	 * if we didn't find a davbus device, try 'i2s-a' since
 	 * this seems to be what iBooks (& Tumbler) have.
 	 */
-	if (np == NULL)
-		np = i2s_node = find_devices("i2s-a");
+	if (np == NULL) {
+		i2s_node = of_find_node_by_name(NULL, "i2s-a");
+		np = of_node_get(i2s_node);
+	}
 
 	/* if we didn't find this - perhaps we are on an early model
 	 * which _only_ has an 'awacs' node
 	*/
 	if (np == NULL && awacs_node)
-		np = awacs_node ;
+		np = of_node_get(awacs_node);
 
 	/* if we failed all these return null - this will cause the
 	 * driver to give up...
@@ -2596,9 +2603,9 @@ get_snd_info_node(struct device_node *io)
 {
 	struct device_node *info;
 
-	info = find_devices("sound");
-	while (info && info->parent != io)
-		info = info->next;
+	for_each_node_by_name(info, "sound")
+		if (info->parent == io)
+			break;
 	return info;
 }
 
@@ -2634,11 +2641,17 @@ get_codec_type(struct device_node *info)
 static void __init
 get_expansion_type(void)
 {
-	if (find_devices("perch") != NULL)
+	struct device_node *dn;
+
+	dn = of_find_node_by_name(NULL, "perch");
+	if (dn != NULL)
 		has_perch = 1;
+	of_node_put(dn);
 
-	if (find_devices("pb-ziva-pc") != NULL)
+	dn = of_find_node_by_name(NULL, "pb-ziva-pc");
+	if (dn != NULL)
 		has_ziva = 1;
+	of_node_put(dn);
 	/* need to work out how we deal with iMac SRS module */
 }
 
@@ -2827,7 +2840,7 @@ int __init dmasound_awacs_init(void)
 #ifdef DEBUG_DMASOUND
 printk("dmasound_pmac: couldn't find sound io OF node\n");
 #endif
-		return -ENODEV ;
+		goto no_device;
 	}
 
 	/* find the OF node that tells us about the sound sub-system
@@ -2839,7 +2852,7 @@ printk("dmasound_pmac: couldn't find sound io OF node\n");
 #ifdef DEBUG_DMASOUND
 printk("dmasound_pmac: couldn't find 'sound' OF node\n");
 #endif
-			return -ENODEV ;
+			goto no_device;
 		}
 	}
 
@@ -2848,7 +2861,7 @@ printk("dmasound_pmac: couldn't find 'sound' OF node\n");
 #ifdef DEBUG_DMASOUND
 printk("dmasound_pmac: couldn't find a Codec we can handle\n");
 #endif
-		return -ENODEV ; /* we don't know this type of h/w */
+		goto no_device; /* we don't know this type of h/w */
 	}
 
 	/* set up perch, ziva, SRS or whatever else we have as sound
@@ -2866,11 +2879,12 @@ printk("dmasound_pmac: couldn't find a Codec we can handle\n");
 		 * machines).
 		 */
 		if (awacs_node) {
-			io = awacs_node ;
+			of_node_put(io);
+			io = of_node_get(awacs_node);
 			if (of_get_address(io, 2, NULL, NULL) == NULL) {
 				printk("dmasound_pmac: can't use %s\n",
 				       io->full_name);
-				return -ENODEV;
+				goto no_device;
 			}
 		} else
 			printk("dmasound_pmac: can't use %s\n", io->full_name);
@@ -2881,7 +2895,7 @@ printk("dmasound_pmac: couldn't find a Codec we can handle\n");
 			       awacs_rsrc[0].end - awacs_rsrc[0].start + 1,
 			       " (IO)") == NULL) {
 		printk(KERN_ERR "dmasound: can't request IO resource !\n");
-		return -ENODEV;
+		goto no_device;
 	}
 	if (of_address_to_resource(io, 1, &awacs_rsrc[1]) ||
 	    request_mem_region(awacs_rsrc[1].start,
@@ -2890,7 +2904,7 @@ printk("dmasound_pmac: couldn't find a Codec we can handle\n");
 		release_mem_region(awacs_rsrc[0].start,
 				   awacs_rsrc[0].end - awacs_rsrc[0].start + 1);
 		printk(KERN_ERR "dmasound: can't request Tx DMA resource !\n");
-		return -ENODEV;
+		goto no_device;
 	}
 	if (of_address_to_resource(io, 2, &awacs_rsrc[2]) ||
 	    request_mem_region(awacs_rsrc[2].start,
@@ -2901,7 +2915,7 @@ printk("dmasound_pmac: couldn't find a Codec we can handle\n");
 		release_mem_region(awacs_rsrc[1].start,
 				   awacs_rsrc[1].end - awacs_rsrc[1].start + 1);
 		printk(KERN_ERR "dmasound: can't request Rx DMA resource !\n");
-		return -ENODEV;
+		goto no_device;
 	}
 
 	awacs_beep_dev = input_allocate_device();
@@ -2913,7 +2927,7 @@ printk("dmasound_pmac: couldn't find a Codec we can handle\n");
 		release_mem_region(awacs_rsrc[2].start,
 				   awacs_rsrc[2].end - awacs_rsrc[2].start + 1);
 		printk(KERN_ERR "dmasound: can't allocate input device !\n");
-		return -ENOMEM;
+		goto no_device;
 	}
 
 	awacs_beep_dev->name = "dmasound beeper";
@@ -2941,7 +2955,8 @@ printk("dmasound_pmac: couldn't find a Codec we can handle\n");
 	awacs_rx_irq = irq_of_parse_and_map(io, 2);
 
 	/* Hack for legacy crap that will be killed someday */
-	awacs_node = io;
+	of_node_put(awacs_node);
+	awacs_node = of_node_get(io);
 
 	/* if we have an awacs or screamer - probe the chip to make
 	 * sure we have the right revision.
@@ -2990,6 +3005,8 @@ printk("dmasound_pmac: Awacs/Screamer Codec Mfct: %d Rev %d\n", mfg, rev);
 
 		/* if it's there use it to set up frame rates */
 		init_frame_rates(prop, l) ;
+		of_node_put(info);
+		info = NULL;
 	}
 
 	if (awacs)
@@ -3159,7 +3176,16 @@ printk("dmasound_pmac: Awacs/Screamer Codec Mfct: %d Rev %d\n", mfg, rev);
 	 */
 	input_register_device(awacs_beep_dev);
 
+	of_node_put(io);
+
 	return dmasound_init();
+
+no_device:
+	of_node_put(info);
+	of_node_put(awacs_node);
+	of_node_put(i2s_node);
+	of_node_put(io);
+	return -ENODEV ;
 }
 
 static void __exit dmasound_awacs_cleanup(void)
@@ -3178,6 +3204,8 @@ static void __exit dmasound_awacs_cleanup(void)
 	}
 	dmasound_deinit();
 
+	of_node_put(awacs_node);
+	of_node_put(i2s_node);
 }
 
 MODULE_DESCRIPTION("PowerMac built-in audio driver.");
diff --git a/sound/oss/dmasound/tas_common.c b/sound/oss/dmasound/tas_common.c
index 1125760..b295ef6 100644
--- a/sound/oss/dmasound/tas_common.c
+++ b/sound/oss/dmasound/tas_common.c
@@ -41,7 +41,6 @@
 
 static u8 tas_i2c_address = 0x34;
 static struct i2c_client *tas_client;
-static struct device_node* tas_node;
 
 static int tas_attach_adapter(struct i2c_adapter *);
 static int tas_detach_client(struct i2c_client *);
@@ -191,13 +190,14 @@ int __init
 tas_init(int driver_id, const char *driver_name)
 {
 	const u32* paddr;
+	struct device_node *tas_node;
 
 	printk(KERN_INFO "tas driver [%s])\n", driver_name);
 
 #ifndef CONFIG_I2C_POWERMAC
 	request_module("i2c-powermac");
 #endif
-	tas_node = find_devices("deq");
+	tas_node = of_find_node_by_name("deq");
 	if (tas_node == NULL)
 		return -ENODEV;
 	paddr = of_get_property(tas_node, "i2c-address", NULL);
@@ -208,6 +208,7 @@ tas_init(int driver_id, const char *driver_name)
 	} else    
 		printk(KERN_INFO "using i2c address: 0x%x (default)\n",
 				tas_i2c_address);
+	of_node_put(tas_node);
 
 	return i2c_add_driver(&tas_driver);
 }
diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index 5e82968..2bae9c1 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -816,6 +816,7 @@ static int snd_pmac_free(struct snd_pmac *chip)
 
 	if (chip->pdev)
 		pci_dev_put(chip->pdev);
+	of_node_put(chip->node);
 	kfree(chip);
 	return 0;
 }
@@ -863,7 +864,8 @@ static void __init detect_byte_swap(struct snd_pmac *chip)
  */
 static int __init snd_pmac_detect(struct snd_pmac *chip)
 {
-	struct device_node *sound = NULL;
+	struct device_node *sound;
+	struct device_node *dn;
 	const unsigned int *prop;
 	unsigned int l;
 	struct macio_chip* macio;
@@ -891,22 +893,21 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
 	else if (machine_is_compatible("PowerBook1,1")
 		 || machine_is_compatible("AAPL,PowerBook1998"))
 		chip->is_pbook_G3 = 1;
-	chip->node = find_devices("awacs");
-	if (chip->node)
-		sound = chip->node;
+	chip->node = of_find_node_by_name(NULL, "awacs");
+	sound = of_node_get(chip->node);
 
 	/*
 	 * powermac G3 models have a node called "davbus"
 	 * with a child called "sound".
 	 */
 	if (!chip->node)
-		chip->node = find_devices("davbus");
+		chip->node = of_find_node_by_name(NULL, "davbus");
 	/*
 	 * if we didn't find a davbus device, try 'i2s-a' since
 	 * this seems to be what iBooks have
 	 */
 	if (! chip->node) {
-		chip->node = find_devices("i2s-a");
+		chip->node = of_find_node_by_name(NULL, "i2s-a");
 		if (chip->node && chip->node->parent &&
 		    chip->node->parent->parent) {
 			if (device_is_compatible(chip->node->parent->parent,
@@ -918,12 +919,14 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
 		return -ENODEV;
 
 	if (!sound) {
-		sound = find_devices("sound");
+		sound = of_find_node_by_name(NULL, "sound");
 		while (sound && sound->parent != chip->node)
-			sound = sound->next;
+			sound = of_find_node_by_name(sound, "sound");
 	}
-	if (! sound)
+	if (! sound) {
+		of_node_put(chip->node);
 		return -ENODEV;
+	}
 	prop = of_get_property(sound, "sub-frame", NULL);
 	if (prop && *prop < 16)
 		chip->subframe = *prop;
@@ -934,6 +937,7 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
 		printk(KERN_INFO "snd-powermac no longer handles any "
 				 "machines with a layout-id property "
 				 "in the device-tree, use snd-aoa.\n");
+		of_node_put(chip->node);
 		return -ENODEV;
 	}
 	/* This should be verified on older screamers */
@@ -971,7 +975,9 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
 	prop = of_get_property(sound, "device-id", NULL);
 	if (prop)
 		chip->device_id = *prop;
-	chip->has_iic = (find_devices("perch") != NULL);
+	dn = of_find_node_by_name(NULL, "perch");
+	chip->has_iic = (dn != NULL);
+	of_node_put(dn);
 
 	/* We need the PCI device for DMA allocations, let's use a crude method
 	 * for now ...
@@ -1021,6 +1027,7 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
 		chip->freqs_ok = 1;
 	}
 
+	of_node_put(sound);
 	return 0;
 }
 
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 8e01b55..54e333f 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -1031,32 +1031,40 @@ static irqreturn_t headphone_intr(int irq, void *devid)
 /* look for audio-gpio device */
 static struct device_node *find_audio_device(const char *name)
 {
+	struct device_node *gpiop;
 	struct device_node *np;
   
-	if (! (np = find_devices("gpio")))
+	gpiop = of_find_node_by_name(NULL, "gpio");
+	if (! gpiop)
 		return NULL;
   
-	for (np = np->child; np; np = np->sibling) {
+	for (np = of_get_next_child(gpiop, NULL); np;
+			np = of_get_next_child(gpiop, np)) {
 		const char *property = of_get_property(np, "audio-gpio", NULL);
 		if (property && strcmp(property, name) == 0)
-			return np;
+			break;
 	}  
-	return NULL;
+	of_node_put(gpiop);
+	return np;
 }
 
 /* look for audio-gpio device */
 static struct device_node *find_compatible_audio_device(const char *name)
 {
+	struct device_node *gpiop;
 	struct device_node *np;
   
-	if (! (np = find_devices("gpio")))
+	gpiop = of_find_node_by_name(NULL, "gpio");
+	if (!gpiop)
 		return NULL;
   
-	for (np = np->child; np; np = np->sibling) {
+	for (np = of_get_next_child(gpiop, NULL); np;
+			np = of_get_next_child(gpiop, np)) {
 		if (device_is_compatible(np, name))
-			return np;
+			break;
 	}  
-	return NULL;
+	of_node_put(gpiop);
+	return np;
 }
 
 /* find an audio device and get its address */
@@ -1066,6 +1074,7 @@ static long tumbler_find_device(const char *device, const char *platform,
 	struct device_node *node;
 	const u32 *base;
 	u32 addr;
+	long ret;
 
 	if (is_compatible)
 		node = find_compatible_audio_device(device);
@@ -1083,6 +1092,7 @@ static long tumbler_find_device(const char *device, const char *platform,
 		if (!base) {
 			DBG("(E) cannot find address for device %s !\n", device);
 			snd_printd("cannot find address for device %s\n", device);
+			of_node_put(node);
 			return -ENODEV;
 		}
 		addr = *base;
@@ -1124,7 +1134,9 @@ static long tumbler_find_device(const char *device, const char *platform,
 	DBG("(I) GPIO device %s found, offset: %x, active state: %d !\n",
 	    device, gp->addr, gp->active_state);
 
-	return irq_of_parse_and_map(node, 0);
+	ret = irq_of_parse_and_map(node, 0);
+	of_node_put(node);
+	return ret;
 }
 
 /* reset audio */
@@ -1342,9 +1354,9 @@ int __init snd_pmac_tumbler_init(struct snd_pmac *chip)
 		return err;
 
 	/* set up TAS */
-	tas_node = find_devices("deq");
+	tas_node = of_find_node_by_name(NULL, "deq");
 	if (tas_node == NULL)
-		tas_node = find_devices("codec");
+		tas_node = of_find_node_by_name(NULL, "codec");
 	if (tas_node == NULL)
 		return -ENODEV;
 
@@ -1355,6 +1367,7 @@ int __init snd_pmac_tumbler_init(struct snd_pmac *chip)
 		mix->i2c.addr = (*paddr) >> 1;
 	else
 		mix->i2c.addr = TAS_I2C_ADDR;
+	of_node_put(tas_node);
 
 	DBG("(I) TAS i2c address is: %x\n", mix->i2c.addr);