diff --git a/src/logging.rs b/src/logging.rs
index f8f75ff..ce3533d 100644
--- a/src/logging.rs
+++ b/src/logging.rs
@@ -44,8 +44,7 @@ impl Log for SimpleLogger {
 }
 
 pub fn init() {
-    static LOGGER: SimpleLogger = SimpleLogger;
-    log::set_logger(&LOGGER).unwrap();
+    log::set_logger(&SimpleLogger).unwrap();
 
     // TODO: get log level from boot env
     log::set_max_level(LevelFilter::Trace);
diff --git a/src/plat/io.rs b/src/plat/io.rs
index ce3e283..75b62a5 100644
--- a/src/plat/io.rs
+++ b/src/plat/io.rs
@@ -1,15 +1,13 @@
 pub struct RawConsole
-where RawConsole: Printer;
+where RawConsole: Printer + Reader;
 
 pub trait Printer: core::fmt::Write {
     fn put_char(c: char);
 
-    #[inline]
     fn put_str(s: &str) {
         s.chars().for_each(Self::put_char);
     }
 
-    #[inline]
     fn put_line(s: &str) {
         Self::put_str(s);
         Self::put_char('\n');