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of: Move dynamic node fixups out of powerpc and into common code

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PowerPC does an odd thing with dynamic nodes. It uses a notifier to
catch new node additions and set some of the values like name and type.
This makes no sense since that same code can be put directly into
of_attach_node(). Besides, all dynamic node users need this, not just
powerpc. Fix this problem by moving the logic out of arch/powerpc and
into drivers/of/dynamic.c.

It is also important to remove this notifier because we want to move the
firing of notifiers from before the tree is modified to after so that
the receiver gets a consistent view of the tree, but that is
incompatible with notifiers that modify the node.

Signed-off-by: Grant Likely <grant.likely@linaro.org>
Cc: Nathan Fontenot <nfont@austin.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Grant Likely
2014-07-15 23:25:43 -06:00
parent 6162dbe49a
commit a25095d451
4 changed files with 17 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/of/base.c
+2 -2
View File
@@ -266,8 +266,8 @@ EXPORT_SYMBOL(of_find_all_nodes);
* Find a property with a given name for a given node
* and return the value.
*/
static const void *__of_get_property(const struct device_node *np,
const char *name, int *lenp)
const void *__of_get_property(const struct device_node *np,
const char *name, int *lenp)
{
struct property *pp = __of_find_property(np, name, lenp);
drivers/of/dynamic.c
+13
View File
@@ -98,6 +98,19 @@ int of_property_notify(int action, struct device_node *np,
void __of_attach_node(struct device_node *np)
{
const __be32 *phandle;
int sz;
np->name = __of_get_property(np, "name", NULL) ? : "<NULL>";
np->type = __of_get_property(np, "device_type", NULL) ? : "<NULL>";
phandle = __of_get_property(np, "phandle", &sz);
if (!phandle)
phandle = __of_get_property(np, "linux,phandle", &sz);
if (IS_ENABLED(PPC_PSERIES) && !phandle)
phandle = __of_get_property(np, "ibm,phandle", &sz);
np->phandle = (phandle && (sz >= 4)) ? be32_to_cpup(phandle) : 0;
np->child = NULL;
np->sibling = np->parent->child;
np->allnext = np->parent->allnext;
drivers/of/of_private.h
+2
View File
@@ -63,6 +63,8 @@ static inline int of_property_notify(int action, struct device_node *np,
struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
struct device_node *__of_node_alloc(const char *full_name, gfp_t allocflags);
extern const void *__of_get_property(const struct device_node *np,
const char *name, int *lenp);
extern int __of_add_property(struct device_node *np, struct property *prop);
extern int __of_add_property_sysfs(struct device_node *np,
struct property *prop);