expo: Add a function to write a property to a devicetree
When the devicetree is too small for the property being written, we need
to expand the devicetree and retry the write.
Put this logic into a function so it can be reused.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/boot/cedit.c b/boot/cedit.c
index b7329c3..bb194af 100644
--- a/boot/cedit.c
+++ b/boot/cedit.c
@@ -269,6 +269,28 @@
return 0;
}
+static int write_dt_string(struct abuf *buf, const char *name, const char *str)
+{
+ int ret, i;
+
+ /* write the text of the current item */
+ ret = -EAGAIN;
+ for (i = 0; ret && i < 2; i++) {
+ ret = fdt_property_string(abuf_data(buf), name, str);
+ if (!i) {
+ ret = check_space(ret, buf);
+ if (ret)
+ return log_msg_ret("rs2", -ENOMEM);
+ }
+ }
+
+ /* this should not happen */
+ if (ret)
+ return log_msg_ret("str", -EFAULT);
+
+ return 0;
+}
+
static int h_write_settings(struct scene_obj *obj, void *vpriv)
{
struct cedit_iter_priv *priv = vpriv;
@@ -285,6 +307,7 @@
char name[80];
int ret, i;
+ /* write the ID of the current item */
menu = (struct scene_obj_menu *)obj;
ret = -EAGAIN;
for (i = 0; ret && i < 2; i++) {
@@ -304,20 +327,11 @@
if (ret)
return log_msg_ret("mis", ret);
+ /* write the text of the current item */
snprintf(name, sizeof(name), "%s-str", obj->name);
- ret = -EAGAIN;
- for (i = 0; ret && i < 2; i++) {
- ret = fdt_property_string(abuf_data(buf), name, str);
- if (!i) {
- ret = check_space(ret, buf);
- if (ret)
- return log_msg_ret("rs2", -ENOMEM);
- }
- }
-
- /* this should not happen */
+ ret = write_dt_string(buf, name, str);
if (ret)
- return log_msg_ret("wr2", -EFAULT);
+ return log_msg_ret("wr2", ret);
break;
}