core: ofnode: Have ofnode_read_u32_default return a u32
It was returning an int, which doesn't work if the u32 it is reading,
or the default value, will overflow a signed int.
While it could be made to work, when using a C standard/compiler where
casting negative signed values to unsigned has a defined behavior,
combined with careful casting, it seems obvious one is meant to use
ofnode_read_s32_default() with signed values.
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 1be5ba4..4ab2ae1 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -224,7 +224,7 @@
* @def: default value to return if the property has no value
* @return property value, or @def if not found
*/
-int ofnode_read_u32_default(ofnode ref, const char *propname, u32 def);
+u32 ofnode_read_u32_default(ofnode ref, const char *propname, u32 def);
/**
* ofnode_read_s32_default() - Read a 32-bit integer from a property