libfdt: Make Fdt::root{,_mut}() infallible
As we now build the node without calling into libfdt, there's no need
for the Rust functions to -> Result<_> so update the API accordingly.
Test: m pvmfw virtmgr fsfdt librialto libfdtpci
Test: liblibfdt.integration_test libpvmfw.device_assignment.test
Change-Id: I82d146b0db851c72cb3d58516f4cc14fff3f0321
diff --git a/libs/libfdt/src/lib.rs b/libs/libfdt/src/lib.rs
index 3339262..2ec097a 100644
--- a/libs/libfdt/src/lib.rs
+++ b/libs/libfdt/src/lib.rs
@@ -669,7 +669,7 @@
///
/// NOTE: This does not support individual "/memory@XXXX" banks.
pub fn memory(&self) -> Result<MemRegIterator> {
- let node = self.root()?.subnode(cstr!("memory"))?.ok_or(FdtError::NotFound)?;
+ let node = self.root().subnode(cstr!("memory"))?.ok_or(FdtError::NotFound)?;
if node.device_type()? != Some(cstr!("memory")) {
return Err(FdtError::BadValue);
}
@@ -683,7 +683,7 @@
/// Returns the standard /chosen node.
pub fn chosen(&self) -> Result<Option<FdtNode>> {
- self.root()?.subnode(cstr!("chosen"))
+ self.root().subnode(cstr!("chosen"))
}
/// Returns the standard /chosen node as mutable.
@@ -692,13 +692,13 @@
}
/// Returns the root node of the tree.
- pub fn root(&self) -> Result<FdtNode> {
- Ok(FdtNode { fdt: self, offset: NodeOffset::ROOT })
+ pub fn root(&self) -> FdtNode {
+ FdtNode { fdt: self, offset: NodeOffset::ROOT }
}
/// Returns the standard /__symbols__ node.
pub fn symbols(&self) -> Result<Option<FdtNode>> {
- self.root()?.subnode(cstr!("__symbols__"))
+ self.root().subnode(cstr!("__symbols__"))
}
/// Returns the standard /__symbols__ node as mutable
@@ -738,8 +738,8 @@
}
/// Returns the mutable root node of the tree.
- pub fn root_mut(&mut self) -> Result<FdtNodeMut> {
- Ok(FdtNodeMut { fdt: self, offset: NodeOffset::ROOT })
+ pub fn root_mut(&mut self) -> FdtNodeMut {
+ FdtNodeMut { fdt: self, offset: NodeOffset::ROOT }
}
/// Returns a mutable tree node by its full path.