Hello.
The following patch (introduced by Vojtech Pavlik some time ago) was
removed somewhere between 2.4.14 and 2.4.15-pre3.
Without it, the timer counter is reset to a wrong value and
gettimeofday() starts to return strange values.
Nothing aboutit is mentioned in the changelog, so I suppose it wasn't
supposed to be removed?
J.
--- linux-2.4.15-pre3/arch/i386/kernel/time.c Sun Nov 11 21:33:31 2001
+++ linux-2.4.15-pre3-new/arch/i386/kernel/time.c Mon Nov 12 10:45:57 2001
@@ -501,6 +501,14 @@
count = inb_p(0x40); /* read the latched count */
count |= inb(0x40) << 8;
+
+ if (count > LATCH-1) {
+ outb_p(0x34, 0x43);
+ outb_p(LATCH & 0xff, 0x40);
+ outb(LATCH >> 8, 0x40);
+ count = LATCH - 1;
+ }
+
spin_unlock(&i8253_lock);
count = ((LATCH-1) - count) * TICK_SIZE;
-
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This archive was generated by hypermail 2b29 : Thu Nov 15 2001 - 21:00:29 EST