MFi386: revision 1.212.

1 files changed, 11 insertions, 13 deletions

diff --git a/sys/pc98/cbus/pcrtc.c b/sys/pc98/cbus/pcrtc.c
index d6e57ec..dbb986c 100644
--- a/sys/pc98/cbus/pcrtc.c
+++ b/sys/pc98/cbus/pcrtc.c
@@ -57,6 +57,7 @@
 #include <sys/bus.h>
 #include <sys/limits.h>
 #include <sys/lock.h>
+#include <sys/kdb.h>
 #include <sys/module.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
@@ -377,7 +378,10 @@ getit(void)
 {
 	int high, low;
 
-	mtx_lock_spin(&clock_lock);
+#ifdef KDB
+	if (!kdb_active)
+#endif
+		mtx_lock_spin(&clock_lock);
 
 	/* Select timer0 and latch counter value. */
 	outb(TIMER_MODE, TIMER_SEL0 | TIMER_LATCH);
@@ -385,7 +389,11 @@ getit(void)
 	low = inb(TIMER_CNTR0);
 	high = inb(TIMER_CNTR0);
 
-	mtx_unlock_spin(&clock_lock);
+#ifdef KDB
+	if (!kdb_active)
+#endif
+		mtx_unlock_spin(&clock_lock);
+
 	return ((high << 8) | low);
 }
 
@@ -426,18 +434,8 @@ DELAY(int n)
 	 * takes about 1.5 usec for each of the i/o's in getit().  The loop
 	 * takes about 6 usec on a 486/33 and 13 usec on a 386/20.  The
 	 * multiplications and divisions to scale the count take a while).
-	 *
-	 * However, if ddb is active then use a fake counter since reading
-	 * the i8254 counter involves acquiring a lock.  ddb must not go
-	 * locking for many reasons, but it calls here for at least atkbd
-	 * input.
 	 */
-#ifdef DDB
-	if (db_active)
-		prev_tick = 0;
-	else
-#endif
-		prev_tick = getit();
+	prev_tick = getit();
 	n -= 0;			/* XXX actually guess no initial overhead */
 	/*
 	 * Calculate (n * (timer_freq / 1e6)) without using floating point