From: Ben Pfaff <blp@cs.stanford.edu>
Date: Sat, 27 May 2006 20:57:13 +0000 (+0000)
Subject: Comment.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=commitdiff_plain;h=f28ff360230cb5d7a1768ce0027842f7b8ca45c0

Comment.
---

diff --git a/src/devices/serial.c b/src/devices/serial.c
index d92a87c..1cb49a3 100644
--- a/src/devices/serial.c
+++ b/src/devices/serial.c
@@ -64,7 +64,7 @@ serial_init_poll (void)
   outb (IER_REG, 0);                    /* Turn off all interrupts. */
   outb (FCR_REG, 0);                    /* Disable FIFO. */
   set_serial (115200);                  /* 115.2 kbps, N-8-1. */
-  outb (MCR_REG, MCR_OUT2);             /* Turn on OUT2 output line. */
+  outb (MCR_REG, MCR_OUT2);             /* Required to enable interrupts. */
   intq_init (&txq);
   mode = POLL;
 }