[PATCH] ppc64: SMU partition recovery
This patch adds the ability to the SMU driver to recover missing
calibration partitions from the SMU chip itself. It also adds some
dynamic mecanism to /proc/device-tree so that new properties are visible
to userland.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c
index 6fd57f1..fb117b7 100644
--- a/fs/proc/proc_devtree.c
+++ b/fs/proc/proc_devtree.c
@@ -49,6 +49,39 @@
*/
/*
+ * Add a property to a node
+ */
+static struct proc_dir_entry *
+__proc_device_tree_add_prop(struct proc_dir_entry *de, struct property *pp)
+{
+ struct proc_dir_entry *ent;
+
+ /*
+ * Unfortunately proc_register puts each new entry
+ * at the beginning of the list. So we rearrange them.
+ */
+ ent = create_proc_read_entry(pp->name,
+ strncmp(pp->name, "security-", 9)
+ ? S_IRUGO : S_IRUSR, de,
+ property_read_proc, pp);
+ if (ent == NULL)
+ return NULL;
+
+ if (!strncmp(pp->name, "security-", 9))
+ ent->size = 0; /* don't leak number of password chars */
+ else
+ ent->size = pp->length;
+
+ return ent;
+}
+
+
+void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop)
+{
+ __proc_device_tree_add_prop(pde, prop);
+}
+
+/*
* Process a node, adding entries for its children and its properties.
*/
void proc_device_tree_add_node(struct device_node *np,
@@ -57,11 +90,9 @@
struct property *pp;
struct proc_dir_entry *ent;
struct device_node *child;
- struct proc_dir_entry *list = NULL, **lastp;
const char *p;
set_node_proc_entry(np, de);
- lastp = &list;
for (child = NULL; (child = of_get_next_child(np, child));) {
p = strrchr(child->full_name, '/');
if (!p)
@@ -71,9 +102,6 @@
ent = proc_mkdir(p, de);
if (ent == 0)
break;
- *lastp = ent;
- ent->next = NULL;
- lastp = &ent->next;
proc_device_tree_add_node(child, ent);
}
of_node_put(child);
@@ -84,7 +112,7 @@
* properties are quite unimportant for us though, thus we
* simply "skip" them here, but we do have to check.
*/
- for (ent = list; ent != NULL; ent = ent->next)
+ for (ent = de->subdir; ent != NULL; ent = ent->next)
if (!strcmp(ent->name, pp->name))
break;
if (ent != NULL) {
@@ -94,25 +122,10 @@
continue;
}
- /*
- * Unfortunately proc_register puts each new entry
- * at the beginning of the list. So we rearrange them.
- */
- ent = create_proc_read_entry(pp->name,
- strncmp(pp->name, "security-", 9)
- ? S_IRUGO : S_IRUSR, de,
- property_read_proc, pp);
+ ent = __proc_device_tree_add_prop(de, pp);
if (ent == 0)
break;
- if (!strncmp(pp->name, "security-", 9))
- ent->size = 0; /* don't leak number of password chars */
- else
- ent->size = pp->length;
- ent->next = NULL;
- *lastp = ent;
- lastp = &ent->next;
}
- de->subdir = list;
}
/*