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path: root/drivers/of/overlay.c
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Diffstat (limited to 'drivers/of/overlay.c')
-rw-r--r--drivers/of/overlay.c48
1 files changed, 20 insertions, 28 deletions
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index c423e94baf0f..c9219fddf44b 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -305,7 +305,6 @@ static int add_changeset_property(struct overlay_changeset *ovcs,
{
struct property *new_prop = NULL, *prop;
int ret = 0;
- bool check_for_non_overlay_node = false;
if (target->in_livetree)
if (!of_prop_cmp(overlay_prop->name, "name") ||
@@ -318,6 +317,25 @@ static int add_changeset_property(struct overlay_changeset *ovcs,
else
prop = NULL;
+ if (prop) {
+ if (!of_prop_cmp(prop->name, "#address-cells")) {
+ if (!of_prop_val_eq(prop, overlay_prop)) {
+ pr_err("ERROR: changing value of #address-cells is not allowed in %pOF\n",
+ target->np);
+ ret = -EINVAL;
+ }
+ return ret;
+
+ } else if (!of_prop_cmp(prop->name, "#size-cells")) {
+ if (!of_prop_val_eq(prop, overlay_prop)) {
+ pr_err("ERROR: changing value of #size-cells is not allowed in %pOF\n",
+ target->np);
+ ret = -EINVAL;
+ }
+ return ret;
+ }
+ }
+
if (is_symbols_prop) {
if (prop)
return -EINVAL;
@@ -330,33 +348,18 @@ static int add_changeset_property(struct overlay_changeset *ovcs,
return -ENOMEM;
if (!prop) {
- check_for_non_overlay_node = true;
if (!target->in_livetree) {
new_prop->next = target->np->deadprops;
target->np->deadprops = new_prop;
}
ret = of_changeset_add_property(&ovcs->cset, target->np,
new_prop);
- } else if (!of_prop_cmp(prop->name, "#address-cells")) {
- if (!of_prop_val_eq(prop, new_prop)) {
- pr_err("ERROR: changing value of #address-cells is not allowed in %pOF\n",
- target->np);
- ret = -EINVAL;
- }
- } else if (!of_prop_cmp(prop->name, "#size-cells")) {
- if (!of_prop_val_eq(prop, new_prop)) {
- pr_err("ERROR: changing value of #size-cells is not allowed in %pOF\n",
- target->np);
- ret = -EINVAL;
- }
} else {
- check_for_non_overlay_node = true;
ret = of_changeset_update_property(&ovcs->cset, target->np,
new_prop);
}
- if (check_for_non_overlay_node &&
- !of_node_check_flag(target->np, OF_OVERLAY))
+ if (!of_node_check_flag(target->np, OF_OVERLAY))
pr_err("WARNING: memory leak will occur if overlay removed, property: %pOF/%s\n",
target->np, new_prop->name);
@@ -971,8 +974,6 @@ static int of_overlay_apply(const void *fdt, struct device_node *tree,
goto err_free_overlay_changeset;
}
- of_populate_phandle_cache();
-
ret = __of_changeset_apply_notify(&ovcs->cset);
if (ret)
pr_err("overlay apply changeset entry notify error %d\n", ret);
@@ -1215,17 +1216,8 @@ int of_overlay_remove(int *ovcs_id)
list_del(&ovcs->ovcs_list);
- /*
- * Disable phandle cache. Avoids race condition that would arise
- * from removing cache entry when the associated node is deleted.
- */
- of_free_phandle_cache();
-
ret_apply = 0;
ret = __of_changeset_revert_entries(&ovcs->cset, &ret_apply);
-
- of_populate_phandle_cache();
-
if (ret) {
if (ret_apply)
devicetree_state_flags |= DTSF_REVERT_FAIL;
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