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Fix serial console

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This commit is contained in:
Jiajie Chen 2020-06-16 10:02:56 +08:00
parent 4c9e956225
commit 9a61b334b1
1 changed files with 6 additions and 1 deletions
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7
kernel/src/fs/devfs/stdio.rs
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@ -70,7 +70,12 @@ impl Stdin {
loop {
let mut buf_lock = self.buf.lock();
match buf_lock.pop_front() {
Some(c) => return c,
Some(c) => {
if buf_lock.len() == 0 {
self.eventbus.lock().clear(Event::READABLE);
}
return c;
}
None => {
self.pushed.wait(buf_lock);
}