[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>

5 files changed, 66 insertions, 39 deletions

diff --git a/arch/powerpc/platforms/powermac/backlight.c b/arch/powerpc/platforms/powermac/backlight.c
index 0dc8a45c408..d679964ae2a 100644
--- a/arch/powerpc/platforms/powermac/backlight.c
+++ b/arch/powerpc/platforms/powermac/backlight.c
@@ -56,13 +56,16 @@ struct backlight_device *pmac_backlight;
 
 int pmac_has_backlight_type(const char *type)
 {
-	struct device_node* bk_node = find_devices("backlight");
+	struct device_node* bk_node = of_find_node_by_name(NULL, "backlight");
 
 	if (bk_node) {
 		const char *prop = of_get_property(bk_node,
 				"backlight-control", NULL);
-		if (prop && strncmp(prop, type, strlen(type)) == 0)
+		if (prop && strncmp(prop, type, strlen(type)) == 0) {
+			of_node_put(bk_node);
 			return 1;
+		}
+		of_node_put(bk_node);
 	}
 
 	return 0;
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index 44f85507db3..52cfdd86c92 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -2408,12 +2408,13 @@ static int __init probe_motherboard(void)
 	struct macio_chip *macio = &macio_chips[0];
 	const char *model = NULL;
 	struct device_node *dt;
+	int ret = 0;
 
 	/* Lookup known motherboard type in device-tree. First try an
 	 * exact match on the "model" property, then try a "compatible"
 	 * match is none is found.
 	 */
-	dt = find_devices("device-tree");
+	dt = of_find_node_by_name(NULL, "device-tree");
 	if (dt != NULL)
 		model = of_get_property(dt, "model", NULL);
 	for(i=0; model && i<(sizeof(pmac_mb_defs)/sizeof(struct pmac_mb_def)); i++) {
@@ -2478,15 +2479,18 @@ static int __init probe_motherboard(void)
 		break;
 #endif /* CONFIG_POWER4 */
 	default:
-		return -ENODEV;
+		ret = -ENODEV;
+		goto done;
 	}
 found:
 #ifndef CONFIG_POWER4
 	/* Fixup Hooper vs. Comet */
 	if (pmac_mb.model_id == PMAC_TYPE_HOOPER) {
 		u32 __iomem * mach_id_ptr = ioremap(0xf3000034, 4);
-		if (!mach_id_ptr)
-			return -ENODEV;
+		if (!mach_id_ptr) {
+			ret = -ENODEV;
+			goto done;
+		}
 		/* Here, I used to disable the media-bay on comet. It
 		 * appears this is wrong, the floppy connector is actually
 		 * a kind of media-bay and works with the current driver.
@@ -2544,7 +2548,9 @@ found:
 
 
 	printk(KERN_INFO "PowerMac motherboard: %s\n", pmac_mb.model_name);
-	return 0;
+done:
+	of_node_put(dt);
+	return ret;
 }
 
 /* Initialize the Core99 UniNorth host bridge and memory controller
@@ -2747,12 +2753,14 @@ set_initial_features(void)
 	 * differenciate them all and since that hack was there for a long
 	 * time, I'll keep it around
 	 */
-	if (macio_chips[0].type == macio_ohare && !find_devices("via-pmu")) {
-		struct macio_chip *macio = &macio_chips[0];
-		MACIO_OUT32(OHARE_FCR, STARMAX_FEATURES);
-	} else if (macio_chips[0].type == macio_ohare) {
+	if (macio_chips[0].type == macio_ohare) {
 		struct macio_chip *macio = &macio_chips[0];
-		MACIO_BIS(OHARE_FCR, OH_IOBUS_ENABLE);
+		np = of_find_node_by_name(NULL, "via-pmu");
+		if (np)
+			MACIO_BIS(OHARE_FCR, OH_IOBUS_ENABLE);
+		else
+			MACIO_OUT32(OHARE_FCR, STARMAX_FEATURES);
+		of_node_put(np);
 	} else if (macio_chips[1].type == macio_ohare) {
 		struct macio_chip *macio = &macio_chips[1];
 		MACIO_BIS(OHARE_FCR, OH_IOBUS_ENABLE);
@@ -2845,14 +2853,13 @@ set_initial_features(void)
 		}
 
 		/* Switch airport off */
-		np = find_devices("radio");
-		while(np) {
+		for_each_node_by_name(np, "radio") {
 			if (np && np->parent == macio_chips[0].of_node) {
 				macio_chips[0].flags |= MACIO_FLAG_AIRPORT_ON;
 				core99_airport_enable(np, 0, 0);
 			}
-			np = np->next;
 		}
+		of_node_put(np);
 	}
 
 	/* On all machines that support sound PM, switch sound off */
@@ -2872,16 +2879,12 @@ set_initial_features(void)
 #endif /* CONFIG_POWER4 */
 
 	/* On all machines, switch modem & serial ports off */
-	np = find_devices("ch-a");
-	while(np) {
+	for_each_node_by_name(np, "ch-a")
 		initial_serial_shutdown(np);
-		np = np->next;
-	}
-	np = find_devices("ch-b");
-	while(np) {
+	of_node_put(np);
+	for_each_node_by_name(np, "ch-b")
 		initial_serial_shutdown(np);
-		np = np->next;
-	}
+	of_node_put(np);
 }
 
 void __init
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 092cef4160a..22c4ae4c693 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -622,13 +622,14 @@ static void __init init_p2pbridge(void)
 
 	/* XXX it would be better here to identify the specific
 	   PCI-PCI bridge chip we have. */
-	if ((p2pbridge = find_devices("pci-bridge")) == 0
+	p2pbridge = of_find_node_by_name(NULL, "pci-bridge");
+	if (p2pbridge == NULL
 	    || p2pbridge->parent == NULL
 	    || strcmp(p2pbridge->parent->name, "pci") != 0)
-		return;
+		goto done;
 	if (pci_device_from_OF_node(p2pbridge, &bus, &devfn) < 0) {
 		DBG("Can't find PCI infos for PCI<->PCI bridge\n");
-		return;
+		goto done;
 	}
 	/* Warning: At this point, we have not yet renumbered all busses.
 	 * So we must use OF walking to find out hose
@@ -636,16 +637,18 @@ static void __init init_p2pbridge(void)
 	hose = pci_find_hose_for_OF_device(p2pbridge);
 	if (!hose) {
 		DBG("Can't find hose for PCI<->PCI bridge\n");
-		return;
+		goto done;
 	}
 	if (early_read_config_word(hose, bus, devfn,
 				   PCI_BRIDGE_CONTROL, &val) < 0) {
 		printk(KERN_ERR "init_p2pbridge: couldn't read bridge"
 		       " control\n");
-		return;
+		goto done;
 	}
 	val &= ~PCI_BRIDGE_CTL_MASTER_ABORT;
 	early_write_config_word(hose, bus, devfn, PCI_BRIDGE_CONTROL, val);
+done:
+	of_node_put(p2pbridge);
 }
 
 static void __init init_second_ohare(void)
@@ -1199,8 +1202,7 @@ void __init pmac_pcibios_after_init(void)
 	}
 #endif /* CONFIG_BLK_DEV_IDE */
 
-	nd = find_devices("firewire");
-	while (nd) {
+	for_each_node_by_name(nd, "firewire") {
 		if (nd->parent && (device_is_compatible(nd, "pci106b,18") ||
 				   device_is_compatible(nd, "pci106b,30") ||
 				   device_is_compatible(nd, "pci11c1,5811"))
@@ -1208,15 +1210,14 @@ void __init pmac_pcibios_after_init(void)
 			pmac_call_feature(PMAC_FTR_1394_ENABLE, nd, 0, 0);
 			pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, nd, 0, 0);
 		}
-		nd = nd->next;
 	}
-	nd = find_devices("ethernet");
-	while (nd) {
+	of_node_put(nd);
+	for_each_node_by_name(nd, "ethernet") {
 		if (nd->parent && device_is_compatible(nd, "gmac")
 		    && device_is_compatible(nd->parent, "uni-north"))
 			pmac_call_feature(PMAC_FTR_GMAC_ENABLE, nd, 0, 0);
-		nd = nd->next;
 	}
+	of_node_put(nd);
 }
 
 #ifdef CONFIG_PPC32
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index ae37d3e2378..0444e07e8d7 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -193,8 +193,11 @@ static void pmac_show_cpuinfo(struct seq_file *m)
 #ifndef CONFIG_ADB_CUDA
 int find_via_cuda(void)
 {
-	if (!find_devices("via-cuda"))
+	struct device_node *dn = of_find_node_by_name(NULL, "via-cuda");
+
+	if (!dn)
 		return 0;
+	of_node_put(dn);
 	printk("WARNING ! Your machine is CUDA-based but your kernel\n");
 	printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
 	return 0;
@@ -204,8 +207,11 @@ int find_via_cuda(void)
 #ifndef CONFIG_ADB_PMU
 int find_via_pmu(void)
 {
-	if (!find_devices("via-pmu"))
+	struct device_node *dn = of_find_node_by_name(NULL, "via-pmu");
+
+	if (!dn)
 		return 0;
+	of_node_put(dn);
 	printk("WARNING ! Your machine is PMU-based but your kernel\n");
 	printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
 	return 0;
@@ -225,6 +231,8 @@ static volatile u32 *sysctrl_regs;
 
 static void __init ohare_init(void)
 {
+	struct device_node *dn;
+
 	/* this area has the CPU identification register
 	   and some registers used by smp boards */
 	sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
@@ -234,7 +242,9 @@ static void __init ohare_init(void)
 	 * We assume that we have a PSX memory controller iff
 	 * we have an ohare I/O controller.
 	 */
-	if (find_devices("ohare") != NULL) {
+	dn = of_find_node_by_name(NULL, "ohare");
+	if (dn) {
+		of_node_put(dn);
 		if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
 			if (sysctrl_regs[4] & 0x10)
 				sysctrl_regs[4] |= 0x04000020;
@@ -343,8 +353,15 @@ static void __init pmac_setup_arch(void)
 
 #ifdef CONFIG_SMP
 	/* Check for Core99 */
-	if (find_devices("uni-n") || find_devices("u3") || find_devices("u4"))
+	ic = of_find_node_by_name(NULL, "uni-n");
+	if (!ic)
+		ic = of_find_node_by_name(NULL, "u3");
+	if (!ic)
+		ic = of_find_node_by_name(NULL, "u4");
+	if (ic) {
+		of_node_put(ic);
 		smp_ops = &core99_smp_ops;
+	}
 #ifdef CONFIG_PPC32
 	else
 		smp_ops = &psurge_smp_ops;
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 20f328678fd..6f32c4eca6e 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -264,6 +264,7 @@ static void __init psurge_quad_init(void)
 static int __init smp_psurge_probe(void)
 {
 	int i, ncpus;
+	struct device_node *dn;
 
 	/* We don't do SMP on the PPC601 -- paulus */
 	if (PVR_VER(mfspr(SPRN_PVR)) == 1)
@@ -279,8 +280,10 @@ static int __init smp_psurge_probe(void)
 	 * in the hammerhead memory controller in the case of the
 	 * dual-cpu powersurge board.  -- paulus.
 	 */
-	if (find_devices("hammerhead") == NULL)
+	dn = of_find_node_by_name(NULL, "hammerhead");
+	if (dn == NULL)
 		return 1;
+	of_node_put(dn);
 
 	hhead_base = ioremap(HAMMERHEAD_BASE, 0x800);
 	quad_base = ioremap(PSURGE_QUAD_REG_ADDR, 1024);