From 86623b76dce72bc611f470e0e9ecad963fd558b2 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Thu, 7 Apr 2022 21:25:54 +0200
Subject: kernel: remove the `/tty` device
---
src/kernel/arch/i386/driver/serial.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
(limited to 'src/kernel/arch/i386/driver')
diff --git a/src/kernel/arch/i386/driver/serial.c b/src/kernel/arch/i386/driver/serial.c
index d2c34e7..14bb8fd 100644
--- a/src/kernel/arch/i386/driver/serial.c
+++ b/src/kernel/arch/i386/driver/serial.c
@@ -44,12 +44,11 @@ bool serial_poll_read(char *c) {
size_t serial_read(char *buf, size_t len) {
irq_interrupt_flag(true);
for (size_t i = 0; i < len; i++) {
- for (;;) {
- if (serial_poll_read(&buf[i])) break;
+ while (!serial_poll_read(&buf[i]))
asm("hlt" ::: "memory");
- }
}
irq_interrupt_flag(false);
+ // TODO root driver assumes no partial reads
return len;
}
--
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