Commit aa10537f authored by Rob Herring's avatar Rob Herring
Browse files

Merge tag 'dt-for-robh' of git://git.secretlab.ca/git/linux into for-next 

Pull DT changes from Grant Likely:

DT queued up for v3.16

Mostly bug fixes, but also some rework to improve path handling and device naming
parents eafd370d 08cf78ed

arch/powerpc/include/asm/dcr-mmio.h

+0 −4
Original line number Diff line number Diff line
@@ -51,10 +51,6 @@ static inline void dcr_write_mmio(dcr_host_mmio_t host, 
	out_be32(host.token + ((host.base + dcr_n) * host.stride), value);

}



extern u64 of_translate_dcr_address(struct device_node *dev,

				    unsigned int dcr_n,

				    unsigned int *stride);



#endif /* __KERNEL__ */

#endif /* _ASM_POWERPC_DCR_MMIO_H */

arch/powerpc/sysdev/dcr.c

+3 −3
Original line number Diff line number Diff line
@@ -152,7 +152,7 @@ EXPORT_SYMBOL_GPL(dcr_resource_len); 


#ifdef CONFIG_PPC_DCR_MMIO



u64 of_translate_dcr_address(struct device_node *dev,

static u64 of_translate_dcr_address(struct device_node *dev,

				    unsigned int dcr_n,

				    unsigned int *out_stride)

{

drivers/base/platform.c

+5 −2
Original line number Diff line number Diff line
@@ -131,9 +131,12 @@ EXPORT_SYMBOL_GPL(platform_get_resource_byname); 
 */

int platform_get_irq_byname(struct platform_device *dev, const char *name)

{

	struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ,

							  name);

	struct resource *r;



	if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node)

		return of_irq_get_byname(dev->dev.of_node, name);



	r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name);

	return r ? r->start : -ENXIO;

}

EXPORT_SYMBOL_GPL(platform_get_irq_byname);

drivers/of/base.c

+93 −22
Original line number Diff line number Diff line
@@ -695,6 +695,22 @@ struct device_node *of_get_next_parent(struct device_node *node) 
}

EXPORT_SYMBOL(of_get_next_parent);



static struct device_node *__of_get_next_child(const struct device_node *node,

						struct device_node *prev)

{

	struct device_node *next;



	next = prev ? prev->sibling : node->child;

	for (; next; next = next->sibling)

		if (of_node_get(next))

			break;

	of_node_put(prev);

	return next;

}

#define __for_each_child_of_node(parent, child) \

	for (child = __of_get_next_child(parent, NULL); child != NULL; \

	     child = __of_get_next_child(parent, child))



/**

 *	of_get_next_child - Iterate a node childs

 *	@node:	parent node
@@ -710,11 +726,7 @@ struct device_node *of_get_next_child(const struct device_node *node, 
	unsigned long flags;



	raw_spin_lock_irqsave(&devtree_lock, flags);

	next = prev ? prev->sibling : node->child;

	for (; next; next = next->sibling)

		if (of_node_get(next))

			break;

	of_node_put(prev);

	next = __of_get_next_child(node, prev);

	raw_spin_unlock_irqrestore(&devtree_lock, flags);

	return next;

}
@@ -771,24 +783,79 @@ struct device_node *of_get_child_by_name(const struct device_node *node, 
}

EXPORT_SYMBOL(of_get_child_by_name);



static struct device_node *__of_find_node_by_path(struct device_node *parent,

						const char *path)

{

	struct device_node *child;

	int len = strchrnul(path, '/') - path;



	if (!len)

		return NULL;



	__for_each_child_of_node(parent, child) {

		const char *name = strrchr(child->full_name, '/');

		if (WARN(!name, "malformed device_node %s\n", child->full_name))

			continue;

		name++;

		if (strncmp(path, name, len) == 0 && (strlen(name) == len))

			return child;

	}

	return NULL;

}



/**

 *	of_find_node_by_path - Find a node matching a full OF path

 *	@path:	The full path to match

 *	@path: Either the full path to match, or if the path does not

 *	       start with '/', the name of a property of the /aliases

 *	       node (an alias).  In the case of an alias, the node

 *	       matching the alias' value will be returned.

 *

 *	Valid paths:

 *		/foo/bar	Full path

 *		foo		Valid alias

 *		foo/bar		Valid alias + relative path

 *

 *	Returns a node pointer with refcount incremented, use

 *	of_node_put() on it when done.

 */

struct device_node *of_find_node_by_path(const char *path)

{

	struct device_node *np = of_allnodes;

	struct device_node *np = NULL;

	struct property *pp;

	unsigned long flags;



	raw_spin_lock_irqsave(&devtree_lock, flags);

	for (; np; np = np->allnext) {

		if (np->full_name && (of_node_cmp(np->full_name, path) == 0)

		    && of_node_get(np))

	if (strcmp(path, "/") == 0)

		return of_node_get(of_allnodes);



	/* The path could begin with an alias */

	if (*path != '/') {

		char *p = strchrnul(path, '/');

		int len = p - path;



		/* of_aliases must not be NULL */

		if (!of_aliases)

			return NULL;



		for_each_property_of_node(of_aliases, pp) {

			if (strlen(pp->name) == len && !strncmp(pp->name, path, len)) {

				np = of_find_node_by_path(pp->value);

				break;

			}

		}

		if (!np)

			return NULL;

		path = p;

	}



	/* Step down the tree matching path components */

	raw_spin_lock_irqsave(&devtree_lock, flags);

	if (!np)

		np = of_node_get(of_allnodes);

	while (np && *path == '/') {

		path++; /* Increment past '/' delimiter */

		np = __of_find_node_by_path(np, path);

		path = strchrnul(path, '/');

	}

	raw_spin_unlock_irqrestore(&devtree_lock, flags);

	return np;

}
@@ -1800,7 +1867,7 @@ int of_update_property(struct device_node *np, struct property *newprop) 
{

	struct property **next, *oldprop;

	unsigned long flags;

	int rc, found = 0;

	int rc;



	rc = of_property_notify(OF_RECONFIG_UPDATE_PROPERTY, np, newprop);

	if (rc)
@@ -1809,29 +1876,33 @@ int of_update_property(struct device_node *np, struct property *newprop) 
	if (!newprop->name)

		return -EINVAL;



	oldprop = of_find_property(np, newprop->name, NULL);

	if (!oldprop)

		return of_add_property(np, newprop);



	raw_spin_lock_irqsave(&devtree_lock, flags);

	next = &np->properties;

	while (*next) {

	oldprop = __of_find_property(np, newprop->name, NULL);

	if (!oldprop) {

		/* add the new node */

		rc = __of_add_property(np, newprop);

	} else while (*next) {

		/* replace the node */

		if (*next == oldprop) {

			/* found the node */

			newprop->next = oldprop->next;

			*next = newprop;

			oldprop->next = np->deadprops;

			np->deadprops = oldprop;

			found = 1;

			break;

		}

		next = &(*next)->next;

	}

	raw_spin_unlock_irqrestore(&devtree_lock, flags);

	if (!found)

		return -ENODEV;

	if (rc)

		return rc;



	/* At early boot, bail out and defer setup to of_init() */

	if (!of_kset)

		return 0;



	/* Update the sysfs attribute */

	if (oldprop)

		sysfs_remove_bin_file(&np->kobj, &oldprop->attr);

	__of_add_property_sysfs(np, newprop);

drivers/of/fdt.c

+2 −2
Original line number Diff line number Diff line
@@ -324,7 +324,7 @@ static void __unflatten_device_tree(void *blob, 


	/* First pass, scan for size */

	start = 0;

	size = (unsigned long)unflatten_dt_node(blob, 0, &start, NULL, NULL, 0);

	size = (unsigned long)unflatten_dt_node(blob, NULL, &start, NULL, NULL, 0);

	size = ALIGN(size, 4);



	pr_debug("  size is %lx, allocating...\n", size);
@@ -748,7 +748,7 @@ int __init early_init_dt_scan_memory(unsigned long node, const char *uname, 
		 * The longtrail doesn't have a device_type on the

		 * /memory node, so look for the node called /memory@0.

		 */

		if (depth != 1 || strcmp(uname, "memory@0") != 0)

		if (!IS_ENABLED(CONFIG_PPC32) || depth != 1 || strcmp(uname, "memory@0") != 0)

			return 0;

	} else if (strcmp(type, "memory") != 0)

		return 0;