debug: Only call serial_debug_preinit() at startup.

The serial_debug_preinit() function disables serial interrupts so that
the OS doesn't get confused by "transmit buffer empty" interrupts
caused when seabios writes to the serial port.  It's unnecessary
paranoia to keep rechecking that interrupts are disabled.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/src/boot.c b/src/boot.c
index ad799f9..183f4f3 100644
--- a/src/boot.c
+++ b/src/boot.c
@@ -743,7 +743,6 @@ int BootSequence VARLOW = -1;
 void VISIBLE32FLAT
 handle_18(void)
 {
-    debug_preinit();
     debug_enter(NULL, DEBUG_HDL_18);
     int seq = BootSequence + 1;
     BootSequence = seq;
@@ -754,7 +753,6 @@ handle_18(void)
 void VISIBLE32FLAT
 handle_19(void)
 {
-    debug_preinit();
     debug_enter(NULL, DEBUG_HDL_19);
     BootSequence = 0;
     do_boot(0);